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UMCA Center Faculty and Staff
Publications: Garrett, H.E., Adamson, B.W., Kremer, R.J., Anderson, S.H., Udawatta, R.P. Variations in Soil Aggregate Stability and Enzyme Activities in a Temperate Agroforestry Practice. Applied Soil Ecology. (In press.)
Kenny earned an applied science and associate degree in agricultural production from Three River Community College, and graduated from the University of Missouri in 1998 with a bachelor's degree in Forestry. He began working for the Center for Agroforestry in May of 1998. He was raised on a farm in southeast Missouri and has a strong background in livestock and grain production, which he applies to several projects at the Horticulture and Agroforestry Research Center (HARC), including the cattle study and several construction projects. Kenny's responsibilities include gathering data on tree growth and nut production; pruning and fertilizing trees; and working with woody floral, fern, pine straw and alley cropping systems. He also assists with the planting and harvesting of forage studies, and plans to work with the harvesting of cottonwood trees for bio-fuel research and the planting of riparian buffer zones at HARC. Project Involvement:
Parker received B.S. degrees in Forestry and Fisheries and Wildlife from the University of Missouri.
Ray was raised on a small farm near his hometown of El Dorado Springs in southwest Missouri. In high school, Ray was active in Vo Ag and FFA, and participated in district and state judging contests. He received a BS degree in Agricultural Economics from the University of Missouri. Immediately after college, he began working at the Sinclair Comparative Medicine Research Farm and continued there for 20 years, with 15 years spent as a Farm Supervisor. Ray then worked for Research Support Services (now Field Operations), until receiving the Farm Supervisor position at HARC. Ray has served at HARC for nearly seven years, and enjoys the new challenges each day brings -- especially in the supervision of research support activities and personnel, maintenance of buildings, grounds, machinery, equipment and vehicles. He credits the entire HARC team for meeting research challenges and maintaining a beautiful facility. Ray's goal as HARC continues to develop is to make the farm an even more beautiful and efficient research center.
Jimmy received an M.S. Forestry from the University of Missouri in 2001 and currently works with Dr. Robert McGraw in the Department of Agronomy. Primary activities include project management and data collection on research ranging from native plants suitable for silvopasture to flood tolerance of herbaceous species. Principle research interests revolve around tall fescue and its influence on tree species suitable for silvopasture and developing prescriptions for establishing silvopasture practices. Publications:
Houx , J.H. III and R.L. McGraw. 2006. Biomass yield of three-year old
black locust as affected by grass species and management
treatments. American Society of Agronomy Abstracts. Nov. 12-16, 2006,
Indianapolis, IN. 2006 CD-ROM.
McGraw, R.L. and J. H. Houx III. 2006. Flood tolerance of herbaceous
grasses and legumes. American Society of Agronomy Abstracts. Nov.
12-16, 2006, Indianapolis, IN. 2006 CD-ROM.
Dusty received a B.S. degree in Range Management from Kansas State University.
Agroforestry-related research interests include evaluation of runoff, sediment, and nutrient losses influenced by vegetative buffer strips. Ongoing research projects include characterization of soil hydraulic properties under agroforestry buffer strips and utilization of x-ray computed tomography techniques to quantify soil pore size distributions under forest and grass buffers. Publications Related to Agroforestry Jiang, P., N.R. Kitchen, S.H. Anderson, E.J. Sadler, and K.A. Sudduth. 2008. Estimating plant-available water using the simple inverse yield model for claypan landscapes. Agron. J. 100:830-836. Kazemi, H.V., S.H. Anderson, K.W. Goyne, and C.J. Gantzer. 2008. Atrazine and alachlor transport in claypan soils as influenced by differential antecedent soil water content. J. Environ. Qual. 37:1599-1607. Kumar, S., S.H. Anderson, L.G. Bricknell, R.P. Udawatta, and C.J. Gantzer. 2008. Soil hydraulic properties influenced by agroforestry and grass buffers for grazed pasture systems. J. Soil Water Conserv. 63:224-232. Rachman, A., S.H. Anderson, E.E. Alberts, A.L. Thompson, and C.J. Gantzer. 2008. Predicting runoff and sediment yield from a stiff-stemmed grass hedge system for a small watershed. Trans. of the ASABE 51:425-432. Udawatta, R.P., C.J. Gantzer, S.H. Anderson, and H.E. Garrett. 2008. Agroforestry and grass buffer effects on high resolution X-ray CT-measured pore characteristics. Soil Sci. Soc. Am. J. 72:295-304. Udawatta, R.P., R.J. Kremer, B.W. Adamson, and S.H. Anderson. 2008. Variations in soil aggregate stability and enzyme activities in a temperate agroforestry practice. Applied Soil Ecology 39:153-160. Udawatta, R.P., and S.H. Anderson. 2008. CT-measured pore characteristics of surface and subsurface soils influenced by agroforestry and grass buffers. Geoderma 145:381-389. Udawatta, R.P., S.H. Anderson, C.J. Gantzer, and H.E. Garrett. 2008. Influence of prairie restoration on CT-measured soil pore characteristics. J. Environ. Qual. 37:219-228. Anderson, S.H., Z. Cheng, and C.J. Gantzer. 2007. MRB signatures of X-ray CT images for estimating soil hydraulic conductivity. Intelligent Engineering Systems Through Artificial Neural Networks 17:131-136. ASME Press, New York, NY. Jiang, P., S.H. Anderson, N.R. Kitchen, E.J. Sadler, and K.A. Sudduth. 2007. Landscape and conservation management effects on hydraulic properties of a claypan-soil toposequence. Soil Sci. Soc. Am. J. 71:803-811. Jiang, P., S.H. Anderson, N.R. Kitchen, K.A. Sudduth, and E.J. Sadler. 2007. Estimating plant-available water capacity for claypan landscapes using apparent electrical conductivity. Soil Sci. Soc. Am. J. 71:1902-1908. Blanco-Canqui, H., C.J. Gantzer, and S.H. Anderson. 2006. Performance of grass barriers and filter strips under interrill and concentrated flow. J. Env. Qual. 35: 1969-1974. Udawatta, R.P., S.H. Anderson, C.J. Gantzer, and H.E. Garrett. 2006. Agroforestry and grass buffer influence on macropore characteristics: A computed tomography analysis. Soil Sci. Soc. Am J. 70:1763-1773. Rachman, A., S.H. Anderson, and C.J. Gantzer. 2005. Computed-tomographic measurement of soil macroporosity parameters as affected by stiff-stemmed grass hedges. Soil Sci. Soc. Am. J. 69:1609-1616. Seobi, T., S.H. Anderson, R.P. Udawatta, and C.J. Gantzer. 2005. Influence of grass and agroforestry buffer strips on soil hydraulic properties for an Albaqualf. Soil Sci. Soc. Am. J. 69: 893-901. Blanco-Canqui, H., C.J. Gantzer, S.H. Anderson, and E.E. Alberts. 2004. Grass barriers for reduced concentrated flow induced soil and nutrient loss. Soil Sci. Soc. Am. J. 68:1963-1972. Blanco-Canqui, H., C.J. Gantzer, S.H. Anderson, E.E. Alberts, and A.L. Thompson. 2004. Grass barrier and vegetative filter strip effectiveness in reducing runoff, sediment, nitrogen, and phosphorous loss. Soil Sci. Soc. Am. J. 68:1670-1678. Rachman, A., S.H. Anderson, C.J. Gantzer, and E.E. Alberts. 2004. Soil hydraulic properties influenced by stiff-stemmed grass hedge systems. Soil Sci. Soc. Am. J. 68:1386-1393. Rachman, A., S.H. Anderson, C.J. Gantzer, and A.L. Thompson. 2004. Influence of stiff-stemmed grass hedge systems on infiltration. Soil Sci. Soc. Am. J. 68:2000-2006. Anderson, S.H., H. Wang, R.L. Peyton, and C.J. Gantzer. 2003. Estimation of porosity and hydraulic conductivity from x-ray CT-measured solute breakthrough. In F. Mees, R. Swennen, M. Van Geet, & P. Jacobs (eds.) Applications of X-ray Computed Tomography in the Geosciences. Geological Society of London. Special Publication 215:135-149. Rachman, A., S.H. Anderson, C.J. Gantzer, and A.L. Thompson. 2003. Influence of long-term cropping systems on soil physical properties related to soil erodibility. Soil Sci. Soc. of Am. J. 67:637-644. Blanco-Canqui, H. C.J. Gantzer, S.H. Anderson, E.E. Alberts, and F. Ghidey. 2002. Saturated hydraulic conductivity and its impact on simulated runoff for claypan soils. Soil Sci. Soc. Am. J. 66:1596-1602. Cheng, Z., S.H. Anderson, C.J. Gantzer, and Y. Chu. 2001. Fuzzy logic for predicting soil hydraulic conductivity using CT images. Intelligent Engineering Systems Through Artificial Neural Networks 11:307-312. ASME Press, Fairfield, NJ.
Research interests deal with the biology, ecology and behavior of tree
fruit and nut pests. Current agroforestry-related research is directed
towards the chemical ecology between host plant and insect pest.
Specifically, whether plant volatiles from chestnut can be utilized a
effective attractants for the chestnut weevil. If successful, results
from the study will aid in the development of sustainable management
practices in chestnut plantations and agroforestry systems by
providing an effective pest monitoring tactic. Publications
Keesey, I., and B. Barrett. Seasonal occurrence and soil distribution
of the lesser chestnut weevil, Curculio sayi (Coleoptera:
Curculionidae) in mid-Missouri. Journal of the Kansas Entomological
Society (in press).
Barrett, B.A. 2008. Assessment of methoxyfenozide exposure on the
sexual attractiveness and responsiveness of adult codling moth, Cydia
pomonella L., in small orchard blocks. Pest Management Science
64:916-922
Reinke, M., and B. Barrett. 2007. Fecundity, fertility and longevity
reductions in adult Oriental fruit moth (Lepidoptera: Tortricidae)
exposed to surfaces treated with the ecdysteroid agonists tebufenozide
and methoxyfenozide. Journal of Entomological Science 42:457-466.
Reinke, M., and B. Barrett. 2007. Sublethal exposure to
methoxyfenozide-treated surfaces reduces the attractiveness and
responsiveness in adult oriental fruit moth (Lepidoptera:
Tortricidae). Journal of Economic Entomology 100:72-78.
Ngampongsai, A., B. Barrett, S. Permkam, and N. Suthapradit. 2005.
Oviposition preference and development of the fruit piercing moth,
Ophiusa coronata Fabricious (Lepidoptera: Noctuidae) on four host
plants. Journal of the International Society for Southeast Asian
Agricultural Sciences (ISSAAS) 11:1-13.
Ngampongsai, A., B. Barrett, S. Permkam, N. Suthapradit, and R.
Nilla-or. 2005. A preliminary study on some ecological aspects of the
fruit piercing moths in Songkhla Province of southern Thailand.
Songklanakarin Journal of Science and Technology 27:1135-1145.
Sun, X., B. Barrett, and Q. Song. 2004. Effects of age and length of
exposure on the reproduction of adult codling moth (Lepidoptera:
Tortricidae) exposed to surfaces treated with ecdysone agonists.
Journal of Entomological Science 39:417-425.
Hoelscher, J., and B. Barrett. 2003. Effects of
methoxyfenozide-treated surfaces on the attractiveness and
responsiveness of adult codling moth (Lepidoptera: Tortricidae).
Journal of Economic Entomology 96:623-628.
Hoelscher, J., and B. Barrett. 2003. Effects of
methoxyfenozide-treated surfaces on the attractiveness and
responsiveness of adult leafrollers. Entomologia Experimentalis et
Applicata 107:133-140.
Sun, X., Q. Song, and B. Barrett. 2003. Effects of ecdysone agonists
on the expression of EcR, USP and other specific proteins in the
ovaries of the codling moth (Cydia pomonella L.). Insect Biochemistry
and Molecular Biology 33:829-840.
X. Sun, Q. Song, and B. Barrett. 2003. Effect of ecdysone agonists on
vitellogenesis and the expression of EcR and USP in codling moth
(Cydia pomonella). Archives of Insect Biochemistry and Physiology
52:115-129.
Fungi are among the most influential organisms in forest communities. Nearly all plants require mutualistic root associations with mycorrhizal fungi to survive (e.g., truffle fungi). Another diverse group of fungi is indispensable as nutrient recyclers by decomposing the leaves and wood (e.g., the edible shiitake, oyster, and wine-cap Stropharia mushrooms). Some of these fungi (e.g., the wood decay fungi Armillaria and Heterobasidion) have the ability to begin recycling plants even before they die! Still other fungi have become so specialized that they can only cause disease of living trees (e.g., the oak wilt fungus)! I am interested in improving our understanding of the ecology of these fungi and developing tools for their management. My current research highlights the cultivation of specialty fungi in agroforestry and the ecology and epidemiology of Armillaria in forest decline. Selected Publications and Presentations
Bruhn, J.N., and Mihail, J.D. 200x. Forest farming of shiitake
mushrooms: Aspects of forced fruiting. Bioresource Technology (In
Review). Bruhn, J.N., Mihail, J.D. and Pickens, J.B. 200x. Forest farming of
shiitake mushrooms: An integrated evaluation of management practices.
Bioresource Technology (In review). Pruett, G.E., Bruhn, J.N., and Mihail, J.D. 200x. Greenhouse
production of Burgundy truffle mycorrhizae on oak roots. New Forests
(Revised and Returned). Pruett, G.E., Bruhn, J.N., and Mihail, J.D. 200x. Temporal
dynamics of ectomycorrhizal community composition on root systems of
oak seedlings infected with Burgundy truffle. Mycological Research
(Revised and Returned). Bruhn, J.N. 2008. La trufficulture aux tats-Unis. In: G. Chevalier
(ed.), La culture de La truffe dans Le monde. Actes du colloque,
Brive-La-Gaillarde, France, 2 Fvrier 2007. Le Causse Corrzien. Pages
219-223. Bruhn, J.N., and Hall, M. 2008. Growing shiitake mushrooms in an
agroforestry practice. Agroforestry in Action, AF1010 - 2008. 12
p. Linzer, R.E., Otrosina, W.J., Gonthier, P., Bruhn, J.N., Laflame,
G., BussiSrres, G., and Garbelotto, M. 2008. Inferences on the
phylogeography of the fungal pathogen Heterobasidion annosum,
including evidence of interspecific horizontal genetic transfer and of
human-mediated, long-range dispersal. Molecular Phylogenetics and
Evolution, doi: 10.1016/j.ympev.2007.12.010. Mihail, J.D., and Bruhn, J.N. 2007. Bioluminescence is widespread
within the Kingdom of Fungi. Opera Mycologica 1: 28-33. Pruett, G.E., Bruhn, J.N., and Mihail, J.D. 2007. Colonization of
pedunculate oak by the Burgundy truffle fungus is greater with natural
than with pelletized lime. Agroforest. Syst.72: 41-50. Mihail, J.D., and Bruhn, J.N. 2007. Dynamics of bioluminescence by
Armillaria gallica, A. mellea, and A. tabescens. Mycologia
99:341-350. Mihail, J.D., Bruhn, J.N., and Bonello, P.E. 2007. Spatial and
temporal patterns of morel fruit body production. Mycological Research
111:339-346. Bruhn, J.N. 2007. How widespread is the pecan truffle (Texas
truffle)? The Pecan Grower 18(4):50-51. Bruhn, J.N., Pruett, G.E., and Williams, A.J. 2006. The pecan
truffle (Tuber lyonii Butters syn. T. texense Heimsch) - First
observations from Missouri, USA, placed in the context of the
literature. Page 156 In: Abstracts ICOM5, 5th International Congress
on Mycorrhizae, , 23-27 July 2006, Granada, Spain. Mihail, J.D., and Bruhn, J.N. 2005. Foraging behaviour of
Armillaria rhizomorph systems. Mycological Research
109:1195-1207. Bruhn, J. N. 2005. Update on the pecan truffle, Tuber lyonii. In:
L. Lombardini (comp), Proceedings of the Pecan Scientists Meeting,
Branson, MO, 5-6 June 2005. Dept of Horticultural Sciences, Texas A&M
Univ. Pages 55-61. Bruhn, J. N., Dey, D. C., Kromroy, K. K., Mihail, J. D., Kabrick,
J. M, and Wetteroff Jr., J. J. 2005. Armillaria root disease affects
coppice regeneration of Quercus spp. in upland Missouri Ozark forests.
Proceedings of the 11th International Conference on Root Rot Diseases
of Forest Trees, Poznan and Bialowiesca, Poland, 15-22 August 2004.
Phytopathologica Polonica. Bruhn, J.N., and Mihail, J.D. 2003. Opportunistically pathogenic
root rot fungi - Armillaria species. Pages 337-346 In: Hanson, P., and
S.D. Wullschleger (eds.), North American Temperate Deciduous Forest
Responses to Changing Precipitation Regimes. Springer-Verlag, New
York. Bruhn, J.N., Wetteroff, J.J., Jr., and Haugen, L. 2003. Survival
of oak root systems following frill girdle herbicide treatment for oak
wilt control. Pages 544 - 550 In: Van Sambeek, J.W., Dawson, J.O.,
Ponder, F. Jr., Loewenstein, E.F., and J. Fralish (eds.), 13th Central
Hardwoods Forest Conference. USDA For. Serv. GTR-NC-234. Bruhn, J.N., Wetteroff, J.J., Jr., Mihail, J.D., Jensen, R.G., and
Pickens, J.B. 2002. Harvest-associated disturbance in upland Ozark
forests of MOFEP. Pages 130-146 In: Shifley, S.R. and J.M. Kabrick
(eds.), Proceedings of the Second Missouri Ozark Forest Ecosystem
Symposium: Post treatment results of the landscape experiment. USDA
For. Serv. GTR-NC-227. Mihail, J.D., Bruhn, J.N., and Leininger, T.R. 2002. The effects
of moisture and oxygen availability on rhizomorph generation by
Armillaria tabescens in comparison with A. gallica and A. mellea.
Mycological Res. 106:697-704. Blankenheim, Z., Adams. G., and Bruhn, J.N. 2001. Oak wilt in
Michigan. Michigan State University Extension, Extension Bulletin
E-2764. 8 p. Bruhn, J.N., Kozak, M.E., and Krawczyk, J. 2000. Woodland specialty
mushrooms: who grows them and what are the problems? In L. Van
Griensven (ed), Science and cultivation of edible fungi: 535-542.
Rotterdam: Balkema. Bruhn, J.N., Wetteroff, J.J., Jr., Mihail, J.D., Kabrick, J.M., and
Pickens, J.B. 2000. Distribution of Armillaria species in upland
Ozark Mountain forests with respect to site, overstory species
composition and oak decline. Forest Pathology 30:43-60.
Agroforestry-related research interests are in the area of the effect of management practices on tree growth and resulting tree/log and wood quality. These management practices include mechanical shaking of nut trees as well as cattle grazing in both pine and walnut. Publications Cutter, B.E., M.V. Coggeshall, J.E. Phelps and D.D. Stokke. 2004. Impacts of forest management activities on selected hardwood wood quality attributes: A review. Wood and Fiber Science. 36:84-97. Furey, M. A., D. E. Burhans, H. He, M.A. Gold and B.E. Cutter. 2003. Effect of vegetation structure on breeding territory selection by red-winged blackbirds in a floodplain restoration project. Pages 211-212 in Proc. 13th Central Hardwood Conference, Urbana-Champaign, Illinois. April 1-3, 2002. J.W. Van Sambeek;, J. O. Dawson; F. Ponder, Jr.; E.F. Loewenstein; and J.S. Fralish (eds). USDA Forest Service GTR NC-234. 565 pages. Cutter, B.E. 2000. Effects of grazing on tree and wood quality in slash pine. pp. 63-67 In Proceedings of Processing, Economics and Other Issues Related to Handling Influx of Small-Diameter Timber in Western North America. Forest Products Society 53rd Annual Meeting, June 27-30, 1999. Boise, Idaho. Rado Gaza (ed.). Cutter, B.E., Hunt, K., and J.D. Haywood. 1999. Tree/wood quality in slash pine following long term cattle grazing. Agroforestry Systems 44:305-312. Cutter, B.E. 1999. Effects of grazing on tree and wood quality in slash pine. In Proceedings of Processing, Economics and Other Issues Related to Handling Influx of Small-Diameter Timber in Western North America. Forest Products Society 53rd Annual Meeting, June 27-30, 1999. Boise, Idaho. Rado Gaza (ed.) In press Lehmkuhler, J.W., M.S. Kerley, H.E. Garrett, B.E. Cutter and R.L . McGraw. 1999. Comparison of continuous and rotational silvopastoral systems for established walnut plantations in southwest Missouri, USA. Agroforestry Systems 44:267-279. Rahmadi, A.I., B.E. Cutter, W.B. Kurtz, and S. Hodge. 1998. State policies addressing agroforestry. pp. 159-162 In Proc. 1998 Southern Forest Economics Workshop. Williamsburg, Virginia. March 25-27, 1998. (K. Lee and R. Lee, eds). Cutter, B.E., K. Hunt, and J.D. Haywood. 1999. Effects of grazing on tree/wood quality in slash pine. pp. 94-97 In Proc. of the Fifth Conference on Agroforestry in North America. Cornell University, Ithaca, New York. August 3-6, 1997. J.P. Lassoie and L.E Buck (eds). Lehmkuler, J.W., M.S. Kerley, H.E. Garrett, R. McGraw, and B. Cutter. 1999. Comparison of continuous and rotational silvopastural systems for established walnut plantations. pp. 89-94. In Proc. of the Fifth Conference on Agroforestry in North America. Cornell University, Ithaca, New York. August 3-6, 1997. J.P. Lassoie and L.E Buck (eds). Garrett, H.E., B.E. Cutter, J.L. Alley, E.F. Loewenstein, K.L. Hunt, B. Piotter and J.E. Jones. 1995. Black walnut growth responses under alley cropping management. Proceedings 4th N.A. Agroforestry Conference (J.H. Ehrenreich, D.L. Ehrenreich and H.W. Lee ed’s.) July 1995. Boise, Idaho p. 143-144. Rink, G., F.H. Kung, and B.E. Cutter. 1994. Selection effectiveness for black walnut nuts and timber. In Opportunities for Agroforestry in the Temperate Zone: Proc. of The 3rd Conference on Agroforestry in North America. R.C Schultz and J.P. Colletti (eds.). Iowa State University. Ames, Iowa. August 16-18, 1993. pp. 101-105. Cutter, B.E. and H.E. Garrett. 1993. Wood quality in alleycropped
eastern black walnut. Agroforestry Systems 22:25-32.
Agroforestry-related interests include the establishment of trees and crops for waterbreaks, determining productivity data from linear plantings of trees and crops managed for waterbreaks, and developing management regimes for trees and crops grown as waterbreaks along the Missouri River corridor. Refereed Journal Articles: Dwyer, J.P., J.M. Kabrick, and J.J. Wetteroff. 2006. Do improvement harvests mitigate Oak Decline in Missouri Ozark Forests? Northern Journal of Applied Forestry. 24(2):123-128. Treiman, T. and J. Dwyer, and D. Larsen. 2005. Long-term economic simulation: Even-aged and Uneven-aged examples from the Missouri Ozark Forest Ecosystem Project (MOFEP). Northern Journal of Applied Forestry. 22(1):42-47. Dwyer, J.P., D.C. Dey, W.D. Walter, and R.G. Jensen. 2004. Harvest impacts in uneven-aged and even-aged Missouri Ozark Forests. Northern Journal of Applied Forestry. 21(4):187-193. Allen, S.B., J.P. Dwyer, D.C. Wallace, and E.A. Cook. 2003. Missouri River flood of 1993: Role of woody corridor width in levee protection. Journal of the American Water Resources Association. 39(4):923-933. Grabner, K.W., J.P. Dwyer, and B.E. Cutter. 2001. Fuel model selection for BEHAVE in Midwestern oak savannas. Northern Journal of Applied Forestry, 18(3):74-80. Alley, J.L., H.E. Garrett, R.L. McGraw, J.P. Dwyer, and C.A. Blanche. 1999. Forage legumes as living mulches for trees in agroforestry practices - preliminary results. Agroforestry Systems 44: 281-291. Dwyer, J.P., D. Wallace, and D.R. Larsen. 1997. Value of woody river corridors in levee protection along the Missouri River. Journal of the American Water Resources Association. 33(2):481-489. Ficklin, R.L., E.G. Dunn and J.P. Dwyer. 1996. Ecosystem management on public lands: An application of optimal externality to timber production. Journal of Environmental Management. 46:395-402. Dwyer, J.P., D. Wallace, and D.R. Larsen. 1996. Value of woody river corridors in levee protection along the Missouri River. Water Resources Bulletin. Dwyer, J.P., J.J. Wetteroff, and B.E. Cutter. 1995. A dendrochronological study of red oak decline in the Missouri Ozarks. Forest Ecology and Management 75:69-75. Dwyer, J.P., and W.B. Kurtz. 1994. Pre outbreak management recommendations for 60 year old declining oak stands in the Ozarks. Northern Journal of Applied Forestry. 11(3):98-101. Dwyer, J.P., D.C. Dey, and W.B. Kurtz. 1993. Profitability of precommercially thinning oak stump sprouts. Northern Journal of Applied Forestry. 10(4):1-5. Farooq, M., W.B. Kurtz, and J.P. Dwyer. 1993. Artificial pruning of immature oak stands is not profitable. Southern Journal of Applied Forestry. 19(1):14-17. Dwyer, J.P., and W.B. Kurtz. 1991. The realities of sustainable management versus diameter limit harvest. Northern Journal of Applied Forestry Field Notes. 8(4):174 -176. Dwyer, J.P., R.L. Plain, and W.B. Kurtz. 1990. Managing oak timberstands for profitability. Journal of the American Society of Farm Managers and Rural Appraisers 54(2):69-75. Cutter, B.E., K.E. Lowell, and J.P. Dwyer. 1990. Thinning effects on diameter growth in black and scarlet oak as shown by tree ring analysis. Forest Ecology and Management 43(1991):1-13. Mitchell, R.J., J.P. Dwyer, R.A. Musbach, H.E. Garrett, G.S.Cox, and W.B. Kurtz. 1988. Crop tree release of a scarlet and black oak stand. Northern Journal of Applied Forestry 5(2):96 99. Dwyer, J.P., and K.E. Lowell. 1988. Long term effects of thinning and pruning on the quality, quantity, and value of oak lumber. Northern Journal of Applied Forestry 5(4):258 260.
Lowell, K.E., and J.P. Dwyer. 1988. Stem form and lumber yield: Long term effects of thinning and pruning. Northern Journal of Applied Forestry 5(1):56 58.
Refereed Proceedings:
Dwyer, J.P., and D.C. Dey. 2007. Product recovery from tree grade 1 northern red oak on Menominee Tribal Lands. Buckley, David S.; Clatterbuck, Wayne K. [Editors] Proceedings, 15th Central Hardwood Forest Conference. e-Gen.Tech.Rep. SRS-101. USDA, Forest Service, Southern Research Station. pp 478-484.
Godsey, L.D., W.D. Walter, J.P. Dwyer, and H.E. Garrett. 2007. A preliminary economic analysis of silvopasture in Missouri's Ozark Forests. Buckley, David S.; Clatterbuck, Wayne K. [Editors] Proceedings, 15th Central Hardwood Forest Conference. e-Gen.Tech.Rep. SRS-101. USDA, Forest Service, Southern Research Station. pp 418-424.
Walter, W.D., D.C. Dey, J.P. Dwyer. 2007. Epicormic response when converting hardwood forests to silvopasture. Buckley, David S.; Clatterbuck, Wayne K. [Editors] Proceedings, 15th Central Hardwood Forest Conference. e-Gen.Tech.Rep. SRS-101. USDA, Forest Service, Southern Research Station. pp 425-431.
Treiman, T., and J.P. Dwyer. 2004. Will landowners adopt reforestation practices? - Answers from the Missouri River floodplain. in Proc. 14th Central Hardwood Forest Conference, March 16-19th, Wooster, OH. Gen. Tech. Rep. NE-316. Newton Square, PA: USDA. Forest Service. Northeastern station. pp 288-296.
Ficklin, R.L., J.P. Dwyer, and R.D. Hammer. 2004. Changes in soil organic carbon concentration and quantity following selection harvesting. in Proc. 14th Central Hardwood Forest Conference, March 16-19th, Wooster, OH. Gen. Tech. Rep. NE-316. Newton Square, PA: USDA. Forest Service. Northeastern station. pp 217-223.
Walter, W.D., and J.P. Dwyer. 2003. Survival results of a biomass planting in the Missouri River flood plain. in Proc. 13th Central Hardwood Forest Conference, April 1-3, 2002. Urbana, IL. Gen. Tech. Rep. NC-234. St. Paul, MN: USDA. Forest Service. North Central Research Station. pp 177-185.
Alley, J.L., H.E. Garrett, R.L. McGraw, and J.P. Dwyer. 1999. Forage legumes as living mulches for trees in agroforestry systems. in Proc. 5th Conf. on Agroforestry in North America. Ithaca, N.Y. August 3-6. pp 161-164.
Grabner, K.W., J.P. Dwyer and B.E. Cutter. 1997. Validation of BEHAVE fire behavior predictions in oak savannas using five fuel models. in Proc. 11th Central Hardwood Forest Conference. March 23-26, University of Missouri - Columbia, USDA For. Serv., North Cent. For. Exp. Stn., Gen. Tech. Rpt. NC-188. pp 202-213. Ficklin, R.L., J.P. Dwyer, B.E. Cutter and T.Draper. 1997. Residual tree damage during selection cuts using two skidding systems in the Missouri Ozarks. in Proc. 11th Central Hardwood Forest Conference. March 23-26, University of Missouri - Columbia, USDA For. Serv., North Cent. For. Exp. Stn., Gen. Tech. Rpt. NC-188. pp 36-46. Dwyer, J.P., D.C. Dey, and W.B. Kurtz. 1993. Profitability of precommercially thinning oak stump sprouts. in Proc. 9th Central Hardwood Forest Conference, March 8-10, West Lafayette, IN. pp 373-380.
Dwyer, J.P. and W.B. Kurtz. 1990. Optimal management strategy for scarlet and black oak stands. in Proc.19th IUFRO World Congress, Montreal, Quebec, Canada. Publication No. FWS 1-91, School of Forestry and Wildlife Virginia Polytechnic Institute and State University. pp 53-60.
Dwyer, J.P., W.B. Kurtz, and K.E. Lowell. 1987. Effects of crop tree thinning and pruning on log and lumber quality of scarlet and black oak stands. in Proc. 6th Central Hardwood Forest Conference. February 24-26, Knoxville, TN. Pp 169-177.
Lowell, K.E., J.P. Dwyer, and W.B. Kurtz. 1987. Evaluation of a common volume equation for scarlet and black oak in the Missouri Ozarks. in Proc. 6th Central Hardwood Forest Conference. February 24-26. Knoxville, TN. pp 449-456.
Extension Publications:
Dwyer, J.P., Larry D. Godsey, and H.E. Hank Stelzer. 2005. Managing Your Timber Sale Tax. Agricultural MU Guide 5056, University Extension, University of Missouri-Columbia. 4p.
Dwyer, J.P., and S.G. Jones. 2002. Determining timber cost basis. Agricultural MU Guide 5055, University Extension, University of Missouri-Columbia. 2p.
Wallace D.C., W.A. Geyer, and J. P. Dwyer. 2000. Waterbreaks:Managed Trees for the Floodplain. Agroforestry Note 19. USDA National Agroforestry Center, Lincoln, NB. 4p.
Dwyer, J.P., W.B. Kurtz, and R.L. Plain. 1994. Maintaining woodland tax records. Agricultural MU Guide Sheet G 740, University Extension, University of Missouri Columbia. 5p.
Milon's research interests are in biophysical and environmental plant physiology. Specific research interests include: 1) biophysics of freezing survival by supercooling of cellular water in tissues of woody plants; 2) microphysics of ice nucleation in solutions and by microorganisms; 3) development of instrumentation for measuring freezing resistance in plants and for use in monitoring environmental variables; 4) bioremediation - develop whole plant and microbial based systems for the bioremediation of toxic products of agricultural herbicides in water and soil environments. Publications
George, M.F. and Burke, M.J. 1984. Supercooling of tissue water to extreme low temperature in overwintering plants. Trends in Biochemical Sciences 9(5):211-214.
Warmund, M.R. and George, M.F. 1990. Low temperature freezing in primary and secondary buds of Rubus spp. Can. J. Plant Sci. 70:893-904.
Popham, H.J., George, M.F., and Chippendale, G.M. 1991. Cold hardiness of larva of the Southwestern corn borer, Diatraea grandiosella. Entomol. Exp. Appl. 58:251-260.
George, M.F., Cutter, B.E., and Chin, P. 1992. Physical changes in hardboard at subfreezing temperatures. Wood and Fiber Science 24(3):252-259.
Schaffer, K.L., George, M.F., Garrett, H.E., and Peleg, M. 1996. Pistillate Flower Development in Eastern Black Walnut. Can. J. For. Res. 26(8):1514-1519.
Lin, C.H., and George, M.F. 1998. The effects of intracellular solute concentration on freezing avoidance by supercooling - a theoretical freezing model for woody plant cells. Quarterly Journal of Chinese Forestry. Q. Jour. Chin. For. 31(2):131-140.
Lin, C.H. McGraw, R.L., George, M.F., Garrett, H.E., and Alley, J.L. 1998. Shade Effects on Forage Crops with Potential in Agroforestry Alley-Cropping Systems. Agroforestry Systems. Proceedings, 5th Conference on Agroforestry in North America, August 1997, Cornell University, Ithaca, New York. Pp. 156-160.
Lin, C.H., R.L. McGraw, M.F. George, and H.E. Garrett. 1999. Shade effects on forage crops with potential in temperate agroforestry practices. Agroforestry Systems 44: 109-119.
Burr, K.E., C.D.B. Hawkins, S.J. L'Hirondelle, W.D. Binder, M.F. George, and T. Repo. 2001. Methods for Measuring Cold Hardiness (M.F. George, thermal analysis section). Chapter 14. In F.J. Bigras and S.J. Colombo (eds.), Conifer Cold Hardiness. Kluwer Academic publishers. Pp. 369-401.
Lin, C.H., R.L. McGraw, M.F. George, and H.E. Garrett. 2001. Nutritive Quality and Morphological Development under Partial Shade of Some Forage Species with Agroforestry Potential. Agroforestry Systems 53(3):269-281.
Lin, C.H., R.N. Lerch, M.F. George, and H.E. Garrett. 2002. Incorporation of selected forage grasses in riparian buffers designed for the bioremediation of atrazine, balance (isoxaflutole) and nitrate. In: W. Schroeder and J. Kort, Editors, Temperate Agroforestry: Adaptive and mitigative roles in a changing physical and socio-economic climate. Proceedings of the 7th North American Agroforestry Conference, Regina, Saskatchewan, Canada, Aug. 13-15, 2001. Pp. 256-265.
Lin, C.H., Lerch, R.N. Garrett, H.E., Thurman, E.M., and George, M.F. 2002. Determination of Balance (isoxaflutole) and its metabolites in water using high-performance liquid chromatography with UV and mass spectrometry. Journal of Agricultural Food and Chemistry . 50(21):5816-5824.
Lin, C.H., Lerch, R.N., Garrett, H.E., Li, Y.X., and George, M.F. 2003. Degradation of isoxaflutole (Balance) herbicide by hypochlorite in tap water. Journal of Agricultural Food and Chemistry 51: 8011-8014.
Lin, C.H., Lerch, R.N., Johnson, W.G., Jordan, D., Garrett, H.E., and George, M.F. 2003. The effect of five forage species on transport and transformation of atrazine and Balance (isoxaflutole) in lysimeter leachate. Journal of Environmental Quality 3: 1992-2000.
Lin, C.H., R.L. McGraw, M.F. George, and H.E. Garrett. 2003. Shade effects on quality and morphological development of forage crops with potential in temperate agroforestry practices. In: T. R. Clason, Editor, Land-Use Management in the Future. Proceedings of the 6th Conference on Agroforestry in North America, June 1999, Hot Springs Arkansas. Pp. 127-139.
Lin, C.H., Lerch, R.N., Garrett H.E. and George, M.F. 2004. Incorporation of selected forage grasses in riparian buffers designed for the bioremediation of atrazine, isoxaflutole (Balance) and nitrate. Agroforestry Systems. 63: 91-99
Lin, C.H., Lerch, R.N., Jordan, D., Garrett, H.E. and George, M.F. 2004. Reduction of nitrate in leachate and soils by five selected forages under influence of atrazine and Balance (isoxaflutole). In: Proceedings of the 8th North American Agroforestry Conference: Agroforestry and Riparian Buffers for Land Productivity and Environmental Stability. June 22-25, 2003, Corvallis, Oregon. pp. 182-195.
Lin, C.H., Lerch, R.N., Garrett, H.E., Li, Y.X. and George, M.F. 2004. Determination of Balance (isoxaflutole) and its metabolites in plant and soil using high-performance liquid chromatography with tandem mass spectrometry (HPLC-MS/MS). (for publication in Journal of Agricultural Food and Chemistry - submitted)
Lin, C.H., Lerch, R.N., George, M.F. and Garrett, H.E. 2004. The determination of atrazine and its metabolites in forages using ion trap GC-MS/MS. (for publication in Journal of Agricultural Food and Chemistry - submitted)
Lin, C.H., R.N. Lerch, R.J. Kremer, H.E. Garrett, R.P. Udawatta, and M.F. George. 2005. Soil microbiological activities in vegetative buffer strips and their association with herbicide degradation.. In K.N. Brooks and P.F. Folliott (ed.) Moving Agroforestry into the Mainstream. The 9th North American Agroforestry Conference Proceedings, June 12-15, 2005, St. Paul, Minnesota. Dept. of Forest Resources, University of Minnesota, St. Paul, MN. pp. 1-10
Lin, C.H., Lerch, R.N., Garrett, H.E., and George, M.F. 2006. An Improved GC -MS/MS Method for Determination of Atrazine and Its Chlorinated Metabolites Uptake by Forage Plants-Laboratory and Field Experiments. Communications in Soil Science and Plant Analysis (In press).
Lin, C.H., Lerch, R.N., Garrett, H.E., and George, M.F. 2006. An Improved GC -MS/MS Method for Determination of Atrazine and Its Chlorinated Metabolites Uptake by Forage Plants-Laboratory and Field Experiments. Communications in Soil Science and Plant Analysis (In press).
Papers Presented at Professional Meetings, Workshops and Conferences
Lin, C.H., R.L. McGraw, M.F. George, and H.E. Garrett. 1999. Shade effects on quality and morphological development of forage crops with potential in temperate agroforestry practices. Proceedings of the 6th Conference on Agroforestry in North America, June 1999, Hot Springs Arkansas. (abstract).
Lin, C.H., R.N. Lerch, M.F. George, and H.E. Garrett. 1999. The bioremedation capacity of five forage grasses on atrazine and balance (isoxaflutole) removal. Seventh Symposium on the Chemistry and State of Modern Pesticides, September 14-16, 1999, Lawrence, Kansas. (poster presentation).
C.H. Lin, R.N. Lerch, Y. X. Li, E.M. Thurman, H.E. Garrett and M.F. George. 2000. Determination of Balance (Isoxaflutole) and its metabolites in water, soil, and plant tissue using high performance liquid chromatography and mass spectrometry. American Society of Agronomy, 2000 Annual Meeting, November 5-9, 2000, Minneapolis, Minnesota. (poster)
C.H. Lin, R.N. Lerch, H.E. Garrett, and M.F. George. 2000. The effect of five forage species on transport and transformation of atrazine and Balance (Isoxaflutole) in lysimeter leachate. American Society of Agronomy, 2000 Annual Meeting, November 5-9, 2000, Minneapolis, Minnesota. (poster)
C.H. Lin, R.N. Lerch, Y. X. Li, E.M. Thurman, H.E. Garrett and M.F. George. 2000. Determination of Balance (isoxaflutole) and its metabolites in water, soil, and plant tissue using high performance liquid chromatography and mass spectrometry. 2000. IUPAC International Workshop on Pesticides 2000, October 3-6, Taichung, Taiwan.
C.H.Lin, R.N. Lerch, H.E. Garrett, and M.F. George. 2000. The bioremedation capacity of five forage grasses on atrazine and Balance (isoxaflutole) removal. IUPAC International Workshop on Pesticides 2000, October 3-6, Taichung, Taiwan.
Lin, C.H., R.N. Lerch, H.E. Garrett, and M.F. George. 2001. A proposed riparian buffer design to maximize the bioremediation capacity on atrazine, Balance (isoxaflutole) and nutrient removal. 7th North American Agroforestry Conference, Regina, Saskatchewan, Aug. 13-15, 2001. (abstract).
Lin, C.H., R.N. Lerch, H.E. Garrett, and M.F. George. 2001. Determination of atrazine and its metabolites in plant material using gas chromatography- ion trap MS/MS and high performance liquid chromatography-tandem mass spectrometry. International Association of Environmental Analytical Chemists 8th Symposium on the Fate of Modern Pesticides in Copenhagen, Denmark in August 2001. (poster)
Lin, C.H., R.N. Lerch, H.E. Garrett, and M.F. George. 2001. The effect of five forage species on the fate of atrazine and Balance (isoxaflutole). International Association of Environmental Analytical Chemists 8th Symposium on the Fate of Modern Pesticides in Copenhagen, Denmark in August 2001. (poster)
Lin, C.H., R.N. Lerch, Y.X. Li, E.M. Thurman, H.E. Garrett, and M.F. George. 2001. Determination of Balance (isoxaflutole) and its metabolites in water, soil, and plant material using high-performance liquid chromatography and mass spectrometry. International Association of Environmental Analytical Chemists 8th Symposium on the Fate of Modern Pesticides in Copenhagen, Denmark in August 2001. (poster)
Lin, C.H., Lerch R.N., George, M.F., and Garrett, H.E. 2003. The immobilization and detoxification of herbicide atrazine and Balance (isoxaflutole) by selected forage species. The Workshop on Tools for Environmental Cleanup: Engineered plants for Phytoremediation, Seattle, Washington, Jan. 26-28, 2003. (poster)
Lin, C.H., Lerch, R.N., Jordan, D., George, M.F., and Garrett, H.E. 2003. The immobilization and detoxification of herbicide atrazine and Balance (isoxaflutole) by selected forage species. Proceedings of the 8th North American Agroforestry Conference, June 22-25, 2003 Corvallis, Oregon. (poster)
Lin, C.H., Lerch, R.N., Garrett, H.E. and George, M.F. 2003. Deactivation of Balance (Isoxaflutole) herbicide by hypochlorite ion in tap water. Missouri Life Sciences Week 2003, University of Missouri, Columbia. (poster)
Lin, C.H., Lerch, R.N., Garrett, H.E. and George, M.F. 2004. The immobilization and detoxification of herbicide atrazine and Balance (isoxaflutole) by selected forage species. International Association of Environmental Analytical Chemistry - August 16-19, 2004. Vail, Colorado. (oral presentation)
Lin, C.H., Lerch, R.N., Leigh, N. D., Garrett, H.E. and George, M.F. 2004. Degradation of isoxaflutole (BalanceTM) herbicide by hypochlorite in tap water. International Association of Environmental Analytical Chemistry - August 16-19, 2004. Vail, Colorado. (oral presentation)
Lin, C.H., Lerch, R.N., Garrett, H.E. and George, M.F. 2004. Ground cover selection for herbicides remediation in agroforestry riparian buffer. 1st World Congress of Agroforestry, June 27-July 02, 2004, Orlando, Florida. (poster)
Agroforestry-related research interests include evaluating the implementation of tree-grass buffers in agroecosystems to improve environmental quality. More specifically, current research focuses on assessing agrichemical (herbicide and veterinary pharmaceutical) fate and transport in tree-grass buffer strips and utilizing these buffers to enhance carbon sequestration. Publications
Motavalli, P.P., K.W. Goyne, and R.P. Udawatta. 2008. Environmental impacts of enhanced-efficiency nitrogen fertilizers. Online. Crop Management doi:10.1094/CM-2008-0730-02-RV. Kazemi, H.V., S.H. Anderson, K.W. Goyne, and C.J. Gantzer. 2008. Atrazine and alachlor transport in claypan soils as influenced by differential antecedent soil water content. J. Environ. Qual. 1599-1607. Kazemi, H.V., S.H. Anderson, K.W. Goyne, and C.J. Gantzer. 2008. Spatial variability of bromide and atrazine transport parameters for a Udipsamment. Geoderma 114: 545-556. Goyne, K.W., H.-J. Jun, S.H. Anderson, and P.P. Motavalli. 2008. Phosphorus and nitrogen sorption to soils in the presence of poultry litter-extracted dissolved organic matter. J. Environ. Qual. 37:154-163. Goyne, K.W., S.L. Brantley, and J. Chorover. 2006. Effects of Organic Acids and Dissolved Oxygen on Apatite and Chalcopyrite Dissolution: Implications for using Elements as Organomarkers and Oxymarkers. Chem. Geol. 234: 28-45. Goyne, K. W., J. Kubicki, S. L. Brantley, A. R. Zimmerman, and J. Chorover. 2005. Sorption of the antibiotic ofloxacin to mesoporous alumina and silica adsorbents Journal of Colloid and Interface Sci. 283: 160-170. Zimmerman, A. R., J. Chorover, K. W. Goyne, and S. L. Brantley. 2004. Protection of mesopore-adsorbed organic matter from enzymatic degradation. Environ. Sci. Technol. 38: 4542-4548. Goyne, K. W., S. L. Brantley, A. R. Zimmerman, S. Komarneni, and J. Chorover. 2004. Influence of mesoporosity on the sorption of 2,4-dichlorophenoxyacetic acid to alumina and silica. J. Colloid Interface Sci. 272-10-20. Zimmerman, A. R., K. W. Goyne, J. Chorover, S. Komarneni, and S. L. Brantley. 2004. Mineral mesopore effects on nitrogenous organic matter adsorption. Org. Geochem. 35: 355-375. Goyne, K. W., A. R. Zimmerman, B. L. Newalkar, S. Komarneni, S. L. Brantley, and J. Chorover. 2002. Surface charge of variable porosity Al2O3(s) and SiO2(s) adsorbents. J. Porous Mater. 9: 243-256. Goyne, K. W., R. L. Day, and J. Chorover. 2001. Response to "Comments on 'Artifacts caused by the collection of soil solution with passive capillary samplers'". Soil Sci. Soc. Am. J. 65: 1572-1573. Goyne, K. W., R. L. Day, and J. Chorover. 2000. Artifacts caused by the collection of soil solution with passive capillary samplers. Soil Sci. Soc. Am. J. 64: 1330-1336. Proceedings and Abstracts from National and International Meetings
Goyne, K.W., H.-J. Jun, S.H. Anderson, and P.P. Motavalli. 2007. Phosphorus sorption to soils in presence of poultry litter-derived DOM and relative sorption of DON. CD-ROM. ASA, CSSA, SSSA International Annual Meetings. New Orleans, LA. 4-8 Nov. 2007. ASA, CSSA, SSSA, Madison, WI.
Lin, C.-H., K.W. Goyne, R.J. Kremer, R. N. Lerch, A.L. Spohn, and H.E. Garrett. 2007. Rhizodegradation of sulfamethazine and the associated impacts on soil microbial activities. CD-ROM. ASA, CSSA, SSSA International Annual Meetings. New Orleans, LA. 4-8 Nov. 2007. ASA, CSSA, SSSA, Madison, WI.
Wu, S.-H., K.W. Goyne, R.N. Lerch, C.-H. Lin, and S.H. Anderson. 2007. Adsorption of isoxaflutole degradates to aluminum and iron hydrous oxides. CD-ROM. ASA, CSSA, SSSA International
Goyne, K.W., J. Chorover, S.L. Brantley, S. Komarneni, and B.L. Newalkar. 2,4-D sorption/desorption: Influence of sorbent mesoporosity and surface chemistry. In Third International Conference on the Remediation of Chlorinated and Recalcitrant Compounds. Poster Abstracts: C3. Enhanced Bioremediation of Recalcitrant Contaminants. May 20-23, 2002. Monterey, CA.
Zimmerman, A., K. Goyne, J. Chorover, J. Kubicki, S. Komarneni, and S. Brantley. 2002. The effect of mineral mesoporosity on amino acid adsorption. Geochem. Cosmochem. Acta. 66: A882.
Zimmerman, A., J. Chorover, J. Kubicki, K. Goyne, S. Komarneni, and S. Brantley. 2002. Effect of mesopores on amino acid adsorption to mineral analog. Abstr. Am. Chem. Soc. 223: U604 082-GEOC Part 1.
Goyne, K.W., J. Chorover, S.L. Brantley, S. Komarneni. 2001. Sorption of 2,4-dichlorophenoxyacetic acid to porous minerals. In Eleventh Annual V.M. Goldschmidt Conference, Abstract #3413. LPI Contribution No. 1088, Lunar and Planetary Institute, Houston (CD-ROM).
Goyne, K.W., R. L. Day, and J. Chorover. 1998. Comparisons of soil solution chemistry and quantity from passive capillary samplers and zero-tension samplers. p. 191. In 1998 Annual Meeting Abstracts, Baltimore, MD. 18-22 Oct. 1998. ASA, CSSA, SSSA, Madison, WI.
Publications Guyette, R.P., D.C. Dey, and M.C. Stambaugh. 2008. The temporal distribution and carbon storage of large oak wood in streams and floodplain deposits. Ecosystems 11:643653. Guyette, R.P., Muzika, R.M. and Stevenson, A. 2007. Rotation length based on a time series analysis of timber degrade caused by oak borers. In: (Buckley and Clatterbuck eds.) The Proceeding of the 15th Central Hardwoods Conference, Knoxville, TN. USDA Forest Service Southern Research Station, e-GTR SRS -101. pp.176-180. Stambaugh, M.C., Guyette, R.P. and Dey, D.C. 2007. Forest fuels and landscape-level fire risk assessment of the Ozark highlands, Missouri. In: (Buckley and Clatterbuck eds.) The Proceeding of the 15th Central Hardwoods Conference, Knoxville, TN. USDA Forest Service Southern Research Station, e-GTR SRS -101. Pp.258-266. McMurry, E., M.C. Stambaugh, R.P. Guyette, D.C. Dey. 2007. Fire scars reveal the source of New England's 1789 Dark Day. International Journal of Wildland Fire 16:266-270. Guyette, R.P., M.A. Spetich, and M.C. Stambaugh. 2006. Historic fire regime dynamics and forcing factors in the Boston Mountains, Arkansas, USA. Forest Ecology and Management 234:293-304. Voelker, S.L., R.M. Muzika, R.P. Guyette, and M.C. Stambaugh. 2006. Historical CO2 growth enhancement declines with age in Quercus and Pinus. Ecological Monographs 76(4): 549-564. Guyette, R.P., R.M. Muzika, and A. Stevenson.
2006. Rotation length based on a time series analysis of timber
degrade by oak borers. Proceeding of the Central Hardwood Conference.
Knoxville TN 2006.
Guyette, R.P., M.A. Spetich, and M.C. Stambaugh.
2006. Historic fire regime dynamics and forcing factors in the Boston
Mountains, Arkansas, USA. Forest ecology and management. 234:293-304.
Guyette, R.P., M.C. Stambaugh, A. Lupo, R.M.
Muzika, and D.C. Dey. 2006. Oak growth in Midwestern North America
linked with post glacial climate epochs in the North Atlantic. PAGES
News 14(2): 21-22.
Guyette, R.P., M.C. Stambaugh, R.M. Muzika, and
D.C. Dey. 2006. Fire scars reveal variability and dynamics of eastern
fire regimes. In: (Dickinson, M. B., ed.) Fire in eastern oak forests:
delivering science to land managers, proceedings of a conference; 2005
November 15-17; Columbus, OH. Gen. Tech. Rep. NRS-P-1. Newtown Square,
PA: U.S. Department of Agriculture, Forest Service, Northern Research
Station. 304 p.
Shlisky, A.J., R.P. Guyette, and K.C. Ryan. 2005.
Modeling reference conditions to restore altered fire regimes in
oak-hickory-pine forests: validating coarse models with local fire
history data. Eastfire Conference, George Mason University. Fairfax
Virginia.
Stambaugh, M.C., R.P. Guyette, and C. Putnam.
2005. Fire in the pines: a 341 year fire history of Big Spring, Ozark
National Scenic Riverways. Park Science, 23:43-47.
Guyette, R.P., M.C. Stambaugh. 2004. Post oak fire
scars as a function of diameter, growth, and tree age. Forest Ecology
and Management. Forest Ecology and Management. 198:183-192.
Muzika, R.M. and R.P. Guyette. 2004. A
dendrochronological analysis of red oak borer abundance. In: (Spetich,
M.A. ed.) Upland Oak Ecology Symposium: history current conditions,
and sustainability. Gen. Tech. Rep. SRS-73. Asheville, NC: U.S.
Depart. of Agriculture, Forest Service Southern Res. Stat. 311 p.
Muzika, R.M. Guyette, R.P., T. Zielonka, and A.M.
Liebhold. 2004. The influence of O3, NO2, and SO2 on growth of Picea
abies and Fagus sylvatica in the Carpathian Mountains. Environmental
Pollution 130:65-71.
Stambaugh, M.C. and R.P. Guyette. 2004. The
long-term growth and climate response of shortleaf pine at the
Missouri Ozark Forest Ecosystem Project. In:(Yaussy et al. eds.) The
Proceeding of the 14th Central Hardwoods Conference, Delaware, Ohio.
USDA Forest Service GTR NE-316. pp 448-458.
Guyette, R.P., M.C. Stambaugh and D.C. Dey 2004.
Ancient oak climate proxies from the agricultural heartland. EOS,
Transactions, American Geophysical Union. 85(46): 483 p.
Guyette, R.P. and M.C. Stambaugh. 2003. The age
and density
of ancient and modern oak wood in streams and sediments. IAWA (International
Association of Wood Anatomists) Journal. 24:345-353 p.
Dey, C.D., R.P. Guyette, and M.C. Stambaugh. 2003. Ancient
woods uncovered. Missouri Conservationist. 64 (1): 4-7.
Guyette, R.P. W. G. Cole, D.C. Dey, and R.M. Muzika.. 2002.
Perspectives on the age and distribution of large wood in riparian carbon pools.
Canadian Journal of Fisheries and Aquatic Sciences 59:578-585.
Guyette, R.P, and W. Cole. 1999. Age characteristics of coarse
woody debris (Pinus strobus) in a lake littoral zone. Canadian Journal
of Fisheries and Aquatic Sciences. 56(3):496-505.
Abstracts
Guyette, R.P., M.C. Stambaugh, D.C. Dey, R.M. Muzika. 2005.
Evidence of the Younger Dryas in oaks from agricultural regions of mid-continental
North America. Published abstratct. Ecological Society of America. Montral,
Canada.
Guyette, R.P., M. Stambaugh, and D.C. Dey. 2004. American
long oak chronology: potential and problems. Abstract. Symposium: Dendroclimatology:
Sharping the Focus. Tucson, Arizona.
Guyette, R.P., M. Stambaugh, and D.C. Dey. 2003. Holocene
oak tree-ring chronology development and analysis in the agricultural landscape
of the Midwestern United States. International Quaternary Society, Reno, Nevada.
Guyette, R.P., D.C. Dey, and M. A. Gold. 2003. A temporal
perspective on Coarse Woody Debris, Carbon Sequestering , and Aquatic Habitat
in Riparian Ecosystems. Abstract. 8th international Agroforestry Conference
Corvallis, Oregon.
Guyette, R.; Cole, W.; Dey, D. 2000. Temporal analysis and
dating of coarse aquatic wood. International Conference on Wood in World Rivers.
Published Abstract. October 23-27, 2000. Oregon State University. Corvallis,
OR.
Rob Kallenbach is an Associate Professor in Agronomy and State Forage Extension Specialist for the University of Missouri. His extension education and research program focuses on integrated forage-livestock systems and he contributes to the Center for Agroforestry with his work on silvopastural systems. Publications (Since 2004)
Dierking, R.M., R.L. Kallenbach, M.S. Kerley, C.A. Roberts, and T.R. Lock. 2008. Yield and nutritive value of Spring Green festulolium and Jessup endophyte-free tall fescue stockpiled for winter pasture. Crop Sci. In Press.
Meyer, A.M., M.S. Kerley, and R.L. Kallenbach. 2008. The effect of residual feed intake rank on forage intake by grazing beef cows. J. Anim. Sci. In Press
Curtis, L.E., R.L. Kallenbach, and C.A. Roberts. 2008. Allocating forage to fall-calving cow-calf pairs strip-grazing stockpiled tall fescue. J. Anim. Sci. 86:780-789.
Curtis, L.E., and R.L. Kallenbach. 2007. Endophyte infection level of tall fescue stockpiled for winter grazing does not alter the gain of calves nursing lactating beef cows. J. Anim. Sci. 85:2346-2353.
Casler, M.D., K.P. Vogel, C.M. Taliaferro, N.J. Ehlke, J.D. Berdahl, E.C. Brummer, R.L. Kallenbach, C.P. West, and R.B. Mitchell. 2007. Latitudinal and longitudinal adaptation of switchgrass populations. Crop Sci. 47:2249-2260.
Kallenbach, R.L., M.S. Kerley, and G.J. Bishop-Hurley. 2006. Forage accumulation, quality and livestock production from an annual ryegrass and cereal rye mixture in a pine-walnut silvopasture. Agroforestry Systems 66:43-53.
Smith, L.B., and R.L. Kallenbach. 2006. Overseeding annual ryegrass and cereal rye into soybean as part of a multifunctional cropping system: I. Grain crop yields, winter annual weed cover, and residue after planting. Online. Forage and Grazinglands doi:10.1094/FG-2006-0907-01-RS.
Smith, L. B., and R.L. Kallenbach. 2006. Overseeding annual ryegrass and cereal rye into soybean as part of a multifunctional cropping system: II. Forage yield and nutritive value. Online. Forage and Grazinglands doi:10.1094/FG-2006-0907-02-RS.
Kallenbach, R. L., C.A. Roberts, T.R. Lock, D.H. Keisler, M.R. Ellersieck, and G.E. Rottinghaus. 2006. Performance of steers fed ammoniated straw from tall fescue seed fields. Online. Forage and Grazinglands doi:10.1094/FG-2006-0113-01-RS.
Kallenbach, R.L., C.J. Nelson, J.H. Coutts and M.D. Massie. 2005. Cutting alfalfa in late-autumn increases annual yield, doesn't hurt stands, but is unlikely to increase profit. Online. Forage and Grazinglands doi:10.1094/FG-2005-0404-01-RS.
Roberts, C.A., H.R. Benedict, N.S. Hill, R.L. Kallenbach, and G.E. Rottinghaus. 2005. Determination of ergot alkaloid content in tall fescue by near-infrared spectroscopy. Crop Sci. 45:778-783.
Fike, J.H., A.L. Buergler, J.A. Burger, and R.L. Kallenbach. 2004. Considerations for establishing and managing silvopastures. Online. Forage and Grazinglands doi:10.1094/FG-2004-1209-01-RV.
Wen, L., J.E. Williams, R.L. Kallenbach, C.A. Roberts, P.R. Beuselinck, and R.L. McGraw. 2004. Cattle preferentially select birdsfoot trefoil from mixtures of tall fescue and birdsfoot trefoil. Online. Forage and Grazinglands doi:10.1094/FG-2004-0924-01-RS.
Lock, T.R., R.L. Kallenbach, D.G. Blevins, T.M. Reinbott, G.J. Bishop-Hurley, R.J. Crawford, Jr., M.D. Massie, and J.W. Tyler. 2004. Phosphorus fertilization of tall fescue pastures may protect beef cows from hypomagnesaemia and improve gain of nursing calves. Online. Forage and Grazinglands doi:10.1094/FG-2004-0608-01-RS.
Scientific Peer-Reviewed Publications Currently In Review Ladyman, K.P., M.S. Kerley, R.L. Kallenbach, H.G. Garrett, R.L. McGraw, and J.W. Van Sambeek. 2005. Quality and quantity evaluations of shade-grown legume forages. Submitted to Agroforestry Systems in May 2004. Book Chapters
Casler, M.D. and R.L. Kallenbach. 2007. Cool-season grasses for humid
areas. In R.F Barnes, C.J. Nelson, K.J. Moore and M. Collins (ed.)
Forages Vol II: The science of grassland agriculture, 6th ed. Iowa
State University Press, Ames, IA.
Cherney, J.H. and R.L. Kallenbach. 2007. Forage systems for the
temperate humid zone. In R.F Barnes, C.J. Nelson, K.J. Moore and M.
Collins (ed.) Forages Vol II: The science of grassland agriculture,
6th ed. Iowa State University Press, Ames, IA.
Abstracts (Since 2004) Meyer, A.M., R.L. Kallenbach, and M.S. Kerley. 2008. Comparison of grazing stockpiled tall fescue versus feeding hay or hay plus supplement to beef cows in late gestation and early lactation. J. Anim. Sci. 86:432 (Suppl. 1). Meyer, A.M., R.L. Kallenbach, M.S. Kerley, and K.P. Ladyman. 2007. The effect of residual feed intake rank in beef cows on forage intake and pasture carrying capacity. J. Anim. Sci. 85:454 (Suppl. 1). Roberts, C.A., R.L. Kallenbach, G.E. Rottinghaus, T.R. Lock, M.D. Massie, and H.R. Benedict. 2006. Ergovaline concentrations in stored tall fescue hay. Abst. # 25569. In Agronomy Abstracts. ASA, Madison, WI. Naylor, J.B., R.L. Kallenbach, D.W. Harby, and D.J. England. 2006. Automated harvester reduces labor for sampling pastures. Abst. #26010 In Agronomy Abstracts. ASA, Madison, WI. Curtis, L.E., and R.L. Kallenbach. 2005. Impact of herbage allowance on lactating beef cows grazing stockpiled tall fescue. In Agronomy Abstracts. ASA, Madison, WI. Bailey, W.C., C.J. Nelson, and R.L. Kallenbach. 2005. Effect of potassium fertilization and glandular-haired alfalfa varieties on potato leafhopper, Empoasca fabae L., populations. In Abstracts, 2005 ESA Annual Meetings, Fort Lauderdale, FL. 15-18 Dec. 2005. ESA, Lanham, MD. Bradley, K.W., and R.L. Kallenbach. 2005. Influence of selected herbicide treatments on ironweed control, forage yield, and forage quality in tall fescue pastures. North Central Weed Sci. Soc. Abstr. 60. [CD-ROM Computer File]. North Central Weed Sci. Soc., Champaign, IL. Beuselinck, P.R., R.L. McGraw, C.A. Roberts, and R.L. Kallenbach. 2005. Cool-season CRP management with fire and haying. In Agronomy Abstracts. ASA, Madison, WI. Ladyman, K.P., M.S. Kerley, R.L. Kallenbach, H.G. Garrett, R.L. McGraw, and J.W. Van Sambeek. 2004. Quality and quantity evaluations of shade-grown legume forages. In J. Anim. Sci. Midwest Sect. Abstract 264:64. Angima, S.D., G.W. Lesoing, F.M. Fishel, and R.L. Kallenbach. 2004. On farm forage demonstration trials. In Agronomy Abstracts. ASA, Madison, WI. Conference Proceedings (Since 2004) *Kallenbach, R.L., T.R. Lock, J.H. Coutts, and M.D. Massie. 2008. Alternative nitrogen fertilizers for tall fescue pastures. p. 23-27. In Proc. Heart of America Grazing Conf. 7-8 Jan. 2008. Columbia, MO. MFGC, Columbia, MO. Angima, S.D., and R.L. Kallenbach. 2008. Relative feed value and crude protein of selected cool and warm season forages in response to varying rates of nitrogen. In Proc. National Assoc. County Agricultural Agents. 13-17 Jul. 2008. Greensboro, NC. NACAA, St. Decatur, IL. Kallenbach, R.L. 2007. Finding alternatives to ammonium nitrate for cool-season grass pastures. p. 28. In Proc. American Forage and Grassland Council. 24-26 Jun. 2007. State College, PA. AFGC, Elmhurst, IL. (Refereed). *Kallenbach, R.L. 2007. Finding alternatives to ammonium nitrate for cool-season grass pastures. In Proc. Southwest Missouri Spring Forage Conf. 1 Mar. 2007. Springfield, MO. *Kallenbach, R.L. 2007. Grazing management. In Proc. 4-State Beef Conf. 10-11 Jan. 2007. Lewis, IA. *Kallenbach, R.L. 2007. Summer pasture options for Mid-Missouri. p. 9-11. In Proc. Mid-Missouri Grazing Conf. 23 Jan. 2007. Columbia, MO. *Kallenbach, R.L. 2006. Simple, repeatable, profitable forage systems. In Proc. 35th annual Cornbelt Cow/Calf Conference. 25 Feb. 2006. Pella, IA. *Kallenbach, R.L. 2006. Developing forage management strategies for Midwest pastures. In Proc. 35th annual Cornbelt Cow/Calf Conference. 25 Feb. 2006. Pella, IA. *Kallenbach, R.L. 2006. Forage systems for dairy grazing. Online. In T.R. Rickard et al. (eds.) Proc. Missouri Dairy Grazing Conf. 6-8 Jul. 2006. Monett, MO. http://agebb.missouri.edu/dairy/grazing/conference/proceedings/foragesystems.pdf Meinhardt, L.E., and R.L. Kallenbach. 2005. Comparing yield and quality of milk from dairy cows fed stockpiled annual ryegrass (Lolium multiflorum L.) and cereal rye (Secale cereale L.) In Proc. 20th Int. Grassland Congress. 26 Jun. - 1 Jul. 2005. Dublin, Ireland. (in press). (Refereed). Smith, L.B., and R.L. Kallenbach. 2005. Overseeding cereal rye and annual ryegrass into soybean for forage as part of a multifunctional cropping system. In Proc. 20th Int. Grassland Congress. 26 Jun. - 1 Jul. 2005. Dublin, Ireland. (in press). (Refereed). Kallenbach, R.L., C.J. Nelson, J.H. Coutts, and M.D. Massie. 2004. Cutting alfalfa in late-autumn increases annual yield, doesn't hurt stands, but unlikely to increase profits. p. 250-254. In Proc. American Forage and Grassland Council. 12-16 Jun. 2004. Roanoke, VA. AFGC, Georgetown, TX. (Refereed). Lock, T.R., R.L. Kallenbach, and C.A. Roberts. 2004. Performance of beef steers fed ammoniated and untreated aftermath following tall fescue seed harvest. p. 501. In R.L. Kallenbach, C.F. Rosenkrans Jr., and T.R. Lock (eds.) Proc. 5th Int. Symp. on Neotyphodium/Grass Interactions. Fayetteville, AR. 23-26 May 2004. University of Arkansas, Fayetteville AR. Roberts, C.A., R.L. Kallenbach, M.D. Massie, and N.S. Hill. 2004. Ergot alkaloid concentration as affected by storage and preservation. p. 51. In D.J. Lang (ed.) Proc. Tall Fescue Toxicosis Workshop. 17-19 Oct. 2004. Wildersville, TN. Kallenbach, R.L. 2004. The influence of nitrogen rate and pasture composition on the toxicity, quality, and yield of stockpiled tall fescue. p. 50. In D.J. Lang (ed.) Proc. Tall Fescue Toxicosis Workshop. 17-19 Oct. 2004. Wildersville, TN. Roberts, C.A., R.L. Kallenbach, and M.D. Massie. 2004. Ergot alkaloid concentration as affected by hay moisture and hay storage time. p. 51. In D.J. Lang (ed.) Proc. Tall Fescue Toxicosis Workshop. 17-19 Oct. 2004. Wildersville, TN. Bailey, W.C., R.L. Kallenbach, T.L. Clark, and C.G. Meinhardt. 2004. Leafhopper and flea beetle populations in traditional and novel varieties of tall fescue. In Proc. Entomological Society of America North Central Branch Annual Meeting. Kansas City, MO. Kallenbach, R.L., M.S. Kerley, and G.J. Bishop-Hurley. 2004. Forage and livestock production from silvopastures planted to annual ryegrass/cereal rye. p. 313. In Proc. Eighth North American Agroforestry Conf. 22-25 Jun. 2003. Corvallis, OR. (Refereed). Ladyman, K.P., M.S. Kerley, R.L. Kallenbach, H.E. Garrett, J.W. Van Sambeek, and N.E. Navarrete-Tindall. 2004. Quality and quantity evaluations of shade grown forages. p. 175-181. In Proc. Eighth North American Agroforestry Conf. 22-25 Jun. 2003. Corvallis, OR. (Refereed). Technical Reports (Since 2004)
Kallenbach R.L., T.R. Lock, J.H. Coutts, and M.D. Massie. 2007. Finding alternatives to ammonium nitrate as a nitrogen source for tall fescue pastures. p. 62-69. Missouri soil fertility and fertilizers research update 2006. Agron. Misc. Publ. 07-01. Univ. Missouri. Columbia, MO.
Beuselinck P.R., R. L. McGraw, C.A. Roberts, and R.L. Kallenbach. 2006. Managing cool-season CRP with fire and haying. Lotus Newsletter. 6:36.
Kallenbach R.L., and M.D. Massie. 2006. Finding alternatives to ammonium nitrate as a nitrogen source for tall fescue pastures. p. 52-55. Missouri soil fertility and fertilizers research update 2005. Agron. Misc. Publ. 06-01. Univ. Missouri. Columbia, MO.
Kallenbach R.L., and M.D. Massie. 2006. Finding alternatives to ammonium nitrate as a nitrogen source for tall fescue pastures. Honeywell Newsletter Online.
Nelson, K.A., C.A. Roberts, and R.L. Kallenbach. 2006. Fall applied weed management systems for tall fescue seed production in northeast Missouri. p. 19-24. Greenly Mem. Res. Cntr. 2006 Res. Rpt. MO Agri. Exp. Stn., Columbia, MO.
Bradley, K.W., R.L. Kallenbach, and M.D. Massie. 2006. Impact of seeding rate and weed control measures for establishing Roundup Ready alfalfa. p. 21-24. SW MO Res. Ed. Ctr. 2006 Res. Rpt. MO Agri. Exp. Stn., Columbia, MO.
Crawford, R.J., Jr., and R.L. Kallenbach. 2006. Bermudagrass improves the gain of stocker calves in tall fescue-based forage systems. p. 6-8. SW MO Res. Ed. Ctr. 2006 Res. Rpt. MO Agri. Exp. Stn., Columbia, MO.
Kallenbach R.L., and R.J. Crawford Jr. 2005. Nitrogen fertilization strategies for annual ryegrass pasture. p. 131-136. Missouri soil fertility and fertilizers research update 2004. Agron. Misc. Publ. 05-01. Univ. Missouri. Columbia, MO.
Kallenbach R.L., and R.L. McGraw. 2005. The influence of nitrogen rate and pasture composition on the toxicity, quality and yield of stockpiled tall fescue. p. 71-77. Missouri soil fertility and fertilizers research update 2004. Agron. Misc. Publ. 05-01. Univ. Missouri. Columbia, MO.
Nelson, C.J., R.L. Kallenbach, and W.C. Bailey. 2005. Effect of potassium fertilization on leafhopper tolerance and persistence of alfalfa. p. 161-171. Missouri soil fertility and fertilizers research update 2004. Agron. Misc. Publ. 05-01. Univ. Missouri. Columbia, MO.
Meinhardt, L.E., and R.L. Kallenbach. 2005. Impact of grazing stockpiled tall fescue on fall calving beef cows. p. 7-10. SW MO Res. Ed. Ctr. 2005 Res. Rpt. MO Agri. Exp. Stn., Columbia, MO.
Kallenbach, R.L., and M.D. Massie. 2005. Nitrogen fertilization strategies for annual ryegrass pasture p. 15-20. SW MO Res. Ed. Ctr. 2005 Res. Rpt. MO Agri. Exp. Stn., Columbia, MO.
Bruce, B.R., R.L. Kallenbach, and M.D. Massie. 2005. 'Ozark bermudagrass interseeded with cereal rye. p. 21-24. SW MO Res. Ed. Ctr. 2005 Res. Rpt. MO Agri. Exp. Stn., Columbia, MO.
Kallenbach R.L., and M.D. Massie. 2005. Finding alternatives to ammonium nitrate as a nitrogen source for tall fescue pastures. p. 25-28. SW MO Res. Ed. Ctr. 2005 Res. Rpt. MO Agri. Exp. Stn., Columbia, MO.
Smith, L.B., and R.L. Kallenbach. 2005. Overseeding cereal rye and annual ryegrass into soybean for forage as part of a multifunctional cropping system. 2005. [Online]. 2004 Bradford Research & Extension Center Studies. Available at
Kallenbach, R.L., D.J. England, G.J., Bishop-Hurley, and J.H. Coutts. 2005. Missouri 2004 Alfalfa Variety Trial Results. Online. Crop Management.
Kallenbach R.L., and M.D. Massie. 2005. Finding alternatives to ammonium nitrate as a nitrogen source for tall fescue pastures [Online]. Honeywell Research Summaries. Available at:
Martz, F.A., M.F. Weiss, R.L. Kallenbach, C.L. Lorenzen, and M.K. Hendrickson. 2004. Conjugated linoleic acid content of pasture finished beef and implications for human diets. Online. Available at verified 21 Dec. 2004.
Kallenbach R.L., and R.J. Crawford Jr. 2004. Nitrogen fertilization strategies for annual ryegrass pasture. p. 32-35. Missouri soil fertility and fertilizers research update 2003. Agron. Misc. Publ. 04-01. Univ. Missouri. Columbia, MO.
Kallenbach R.L., and R.L. McGraw. 2004. The influence of nitrogen rate and pasture composition on the toxicity, quality and yield of stockpiled tall fescue. p. 41-45. Missouri soil fertility and fertilizers research update 2003. Agron. Misc. Publ. 04-01. Univ. Missouri. Columbia, MO.
Kallenbach, R.L., D.J. England, G.J. Bishop-Hurley, and J.H. Coutts. 2004. Missouri 2003 Alfalfa Variety Trial Results. Online. Crop Management.
Meinhardt, L.E., R.L. Kallenbach, C.W. Davis, R.J. Crawford Jr., and M.D. Massie. 2004. Grazing stockpiled annual ryegrass and cereal rye with a seasonal dairy herd. p. 9-14. SW MO Res. Ed. Ctr. 2004 Res. Rpt. MO Agri. Exp. Stn., Columbia, MO.
Lock, T.R., R.L. Kallenbach, and C.A. Roberts. 2004. Performance of beef steers fed ammoniated and untreated aftermath hay made following tall fescue seed harvest. p. 15-18. SW MO Res. Ed. Ctr. 2004 Res. Rpt. MO Agri. Exp. Stn., Columbia, MO.
Kallenbach, R.L., C.J. Nelson, J.H. Coutts, and M.D. Massie. 2004. Harvesting alfalfa in late autumn increases annual yield, doesnt hurt stands but is unlikely to increase profit. p. 22-27. SW MO Res. Ed. Ctr. 2004 Res. Rpt. MO Agri. Exp. Stn., Columbia, MO.
Kallenbach R.L., M.D. Massie, and R.J. Crawford Jr. 2004. Nitrogen fertilization strategies for annual ryegrass pastures. p. 28-32. SW MO Res. Ed. Ctr. 2004 Res. Rpt. MO Agri. Exp. Stn., Columbia, MO.
Roberts. C.A., R.L. Kallenbach, T.R. Lock, and M.D. Massie. 2004. Storage method affects the ergovaline concentration of tall fescue. p. 33-34. SW MO Res. Ed. Ctr. 2004 Res. Rpt. MO Agri. Exp. Stn., Columbia, MO.
Nelson, C.J., R.L. Kallenbach, and W.C. Bailey. 2004. Effect of potassium fertilization on leafhopper tolerance and persistence of alfalfa. p. 64-73. Missouri soil fertility and fertilizers research update 2003. Agron. Misc. Publ. 04-01. Univ. Missouri. Columbia, MO.
Kallenbach, R.L. 2004. Big round bale silage. p. 21-22. Greenly Mem. Res. Cntr. 2004 Res. Rpt. MO Agri. Exp. Stn., Columbia, MO.
Agroforestry-related research involves optimizing silvopastoral management systems. Walnut and pine plantations are evaluated for their effects on forage production and quality and the subsequent effects of forage grazing on nut production and tree growth. Grazing effects are being studied for both new and established plantings. In addition to forage grazing and tree interactions, dietary supplementation and grazing management are being studied for their effects on forage and tree production. Publications Lehmkuhler, J.W., M.S. Kerley, H.E. Garrett, B. McGraw, and B. Cutter. 2000. Comparison of continuous and rotational silvopastoral systems for established walnut plantations. Agroforestry Systems Jan. 2000. Lehmkuhler, J.W., M.S. Kerley, H.E. Garrett, B.E. Cutter and R.L . McGraw. 1999. Comparison of continuous and rotational silvopastoral systems for established walnut plantations in southwest Missouri, USA. Agroforestry Systems 44:267-279. Lehmkuhler, J.W., A.J. Cox, and M.S. Kerley. 1999. Heifer and forage response to stocking rate for rotationally grazed silvopastures. The sixth conference on agroforestry in North America p. 31 (Abstr.). Lehmkuhler, J.W., A. Cox., and M.S. Kerley. 1999. Rotational grazing in silvopastoral systems: Heifer and forage response to stocking rate. University of Missouri Animal Sciences Departmental Report p.40-43. Lehmkuhler, J.W., M.S. Kerley, B. Cutter, E.E.D. Felton, and A. Cox. 1998. Grazing systems for established walnut plantations. University of Missouri Animal Sciences Departmental Report p. 17-20. Lehmkuhler, J.W., M.S. Kerley, H.E. Garrett, R. McGraw, and B. Cutter. 1997. Comparison of continuous and rotational silvopastoral systems for established walnut plantations. Exploring the opportunities for agroforestry in changing rural landscapes Ed. Buck, L.E., and J.P. Lassoie. p. 89-94.
Publications Oliver, C.D., D.R. Berg, D.R. Larsen, and K.L. O'Hara. 1991. Integrating management tools, ecological knowledge, and silviculture. "New Perspectives for Watershed Management: Balancing Long-Term Sustainability with Cumulative Environmental Change". Edited by R . Nieman, Symposium at the Center for Streamside Studies, College of Forest Resources AR-10, University of Washington. Dwyer, J. P., D. Wallace and D. R. Larsen. 1997. Implications of woody river corridors in levee protection along the Missouri River. Journal of the American Water Resources Association 33(2) 481:489.
Lin's primary research involves the use of plants and genetically modified microbes for applications in the area of phytoremediation and bioremediation in agroforestry. Several modern chromatographic and DNA-based techniques have been developed to evaluate the bioremediation capacity of a wide range of forages and woody species for reducing transport and enhancing sequestration and degradation of agrochemicals, veterinary pharmaceuticals, munitions explosives and their degradation products in the vegetative buffer systems. Other active research projects include 1) screening phytochemicals from Eastern redcedar (Juniperus virginiana) for development of potential entrepreneurial opportunities, 2) identifying volatile organic attractants from chestnut that has potential application for biological/chemical control of chestnut weevil, 3) investigating the fate of modern herbicides, such as isoxaflutole, in municipal disinfection process, and 4) assessing the effectiveness of vegetative windbreak in reducing transport of malodorous compounds. Selected Publications:
Lerch, R.N., E.J. Sadler, K.A. Sudduth, N.R. Kitchen, R.J. Kremer,
D.B. Myers, C. Baffaut, S.H. Anderson, and C.H. Lin. 2007. Overview of
the Mark Twain Lake/salt river conservation effects assessment project
(In Press).
Lin, C.H., R.N. Lerch, H.E. Garrett, and George, M.F. 2007.
Phytoremediation of atrazine by five forage grass species:
Transformation, uptake and detoxification. Journal of Environmental
Quality (In Press).
Lerch, R.N., C.H. Lin, and N.D. Leigh. 2007. Reaction pathway of the
diketonitrile degradate of isoxaflutole (Balance™) with hypochlorite
in water. Journal of Agricultural and Food Chemistry 55: 1893-1899.
Van Sambeek J.W., N.E. Navarrete-Tindall, H.E. Garrett, C.-H. Lin, R.L.
McGraw, and D.C. Wallace. 2007. Ranking the Shade Tolerance of Forty-five
Candidate Groundcovers for Agroforestry Plantings. The Temperate
Agroforester Newsletter 15(4).
Lin, C.H., R.N. Lerch, H.E. Garrett, and M.F. George. 2007. An
Improved GC -MS/MS Method for determination of atrazine and its
chlorinated metabolites uptake by forage plants-laboratory and field
experiments. Communications in Soil Science and Plant Analysis
38:1753-1773.
Lin, C.H., R.N. Lerch, H.E. Garrett, Y.X. Li, and M.F. George. 2007.
An Improved HPLC-MS/MS Method for Determination of Isoxaflutole
(Balance) and Its Metabolites in Soils and Forage Plants. Journal of
Agricultural and Food Chemistry 55:3805-3815.
Lin, C.H., R.N. Lerch, H.E. Garrett, and M.F. George. 2007. Ability of
forage grasses exposed to Atrazine and Isoxaflutole (Balance) to
reduce nutrient levels in soils and shallow groundwater.
Communications in Soil Science and Plant Analysis 38:11191136.
Lin, C.H., R.N. Lerch, H.E. Garrett, and M.F. George. 2007. Ability of forage grasses exposed to Atrazine and Isoxaflutole (Balance) to reduce nutrient levels in soils and shallow groundwater. Communications in Soil Science and Plant Analysis 38:11191136. Lin, C.H., R.N. Lerch., R.J. Kremer, H.E. Garrett, and M.F. George. 2007. Stimulated rhizodegradation of atrazine by selected plant species. Proceedings of the 10th North American Agroforestry Conference, June 9-14, Quebec, Canada. Lin, C.H., R.N. Lerch, H.E. Garrett, C.J. Gantzer, and S.H. Anderson. 2007. Utilizing vegetative buffer strips to remove dissolved and sediment-bound atrazine, metolachlor and glyphosate from surface water runoff. Proceedings of the 10th North American Agroforestry Conference, June 9-14, Quebec, Canada. Lin, C.H., R.N. Lerch, R.J. Kremer, H.E. Garrett, R.P. Udawatta, and M.F. George. 2005. Soil microbiological activities in vegetative buffer strips and their association with herbicide degradation. In K.N. Brooks and P.F. Folliott (ed.) Moving Agroforestry into the Mainstream. The 9th North American Agroforestry Conference Proceedings, June 12-15, St. Paul, Minnesota. Dept. of Forest Resources, University of Minnesota, St. Paul, MN. pp. 1-10. Lin, C.H., R.N. Lerch, H.E. Garrett, and M.F. George. 2004. Incorporation of selected forage grasses in riparian buffers designed for the bioremediation of atrazine, isoxaflutole (Balance) and nitrate. Agroforestry Systems. 63:91-99. Lin, C.H., R.N. Lerch, H.E. Garrett, Y.X. Li, and M.F. George. 2003. Degradation of isoxaflutole (Balance) herbicide by hypochlorite in tap water. Journal of Agricultural Food and Chemistry 51:8011-8014. Lin, C.H., R.N. Lerch, W.G. Johnson, D. Jordan, H.E. Garrett, and M.F. George. 2003. The effect of five forage species on transport and transformation of atrazine and Balance (isoxaflutole) in lysimeter leachate. Journal of Environmental Quality 3:1992-2000. Lin, C.H., R.N. Lerch, H.E. Garrett, E.M. Thurman, and M.F. George. 2002. Determination of Balance (isoxaflutole) and its metabolites in water using high-performance liquid chromatography with UV and mass spectrometry. Journal of Agricultural and Food Chemistry 50(21):5816-5824. Lin, C.H., R.L. McGraw, M.F. George, and H.E. Garrett. 2001. Nutritive Quality and Morphological Development under Partial Shade of Some Forage Species with Agroforestry Potential. Agroforestry Systems 53(3):269-281.
Research interests in the dynamics of insect communities in agroforestry systems. This includes studies of the population and community ecology of arthropods in alley cropping systems. Of current interest is the influence of tree/crop interactions on the diversity of arthropod communities in alley cropped production systems as compared to communities in traditional monoculture production systems. Publications Stamps, W.T., T.L. Woods, H.E. Garrett, and M.J. Linit. 2002. Arthropod diversity in alley cropped black walnut (Juglans nigra) stands in eastern Missouri, USA. Agroforestry Systems. (In Press). Stamps, W.T. and M.J. Linit. 2002. Oviposition choice by the black walnut curculio (Coleoptera: Curculionidae): A ten-year study. Environmental Entomology. 31(2): 281-284. Stamps, W.T., T.L. Woods, and M.J. Linit. 2002. Arthropod dynamics in monocropped and black walnut-alley cropped forages. Proceedings 7th Biennial Conference on Agroforestry in NA., Regina, Saskatchewan, Canada, August 13-15, 2001. Stamps, W.T. and M.J. Linit. 1999. The problem of experimental design in temperate agroforestry. Agroforestry Systems 44:187-196. Stamps, W.T. and M.J. Linit. 1999. Toil, trouble, and twiddling thumbs: The problem of experimental design in temperate agroforestry. Proceedings 5th Conference on Agroforestry in N.A., Ithaca, NY, August 3-6, 1997. Stamps, W.T., and M.J. Linit. 1997. Plant diversity and arthropod communities: implications for temperate agroforestry. Agroforestry Systems 39:73-89. Linit, M.J. and W.T. Stamps. 1997. Insects and black walnut: What can we expect in a plantation environment? Proceedings 5th Black Walnut Symposium. USDA, Gen. Tech. Report NC-191, pp 177-182. Marc J. Linit and Semi Necibi. 1995. Black walnut curculio: patterns of nut damage in a plantation environment. Agroforestry Systems 29:321-331. Linit, M.J. and W.T. Stamps. 1995. Plant diversity and arthropod communities: implications for agroforestry. Proceedings 4th N.A. Agroforestry Conference , July, 1995, Boise, Idaho. Schreiber, A. A. and M. J. Linit. 1991. Patterns of nut mortality in a black walnut plantation with particular reference to insects. Journal of the Kansas Entomological Society 64:38-44. Linit, M.J. and W.B. Kurtz. 1991. Curculio-caused nut loss in a black walnut plantation: An economic case history. Proceedings 2nd Conference on Agroforestry in N.A., Springfield, MO., August 1991. Linit, M. J., A. Schreiber, and S. J. Humphry. 1989. Nut mortality in black walnut plantations with particular reference to black walnut curculio. Proceedings 4th Black Walnut Symposium, Carbondale, IL, July 30-August 2, 1989.
Agroforestry-related research focuses on the use of herbaceous perennial species in silvopastoral management systems. Prairie and savanna species native to Missouri and the Midwest and introduced species such as alfalfa are being evaluated for yield potential, development, forage quality and nitrogen fixation under shading. The potential for commercial seed production of tall fescue in alley cropping is being evaluated. Tall fescue is also being studied to determine why it is so detrimental to tree establishment. Flood tolerance of forage plants is being evaluated in a field laboratory located at the Horticulture and Agroforestry Research Center. Publications Leblanc, H.A., R.L. McGraw, and P. Nygren. 2007.
Dinitrogen-fixation by three neotropical agroforestry tree species
under semi-controlled field conditions. Plant and Soil (Accepted).
Houx, J.H. and R.L. McGraw. 2006. Biomass yield of
three-year old black locust as affected by grass species and
management treatments. Agronomy Abstracts (CD-ROM), ASA Madison, WI.
Leblanc, H.A. and R.L. McGraw. 2006. Evaluation of
Inga edulis and I. saminensis for green mulch and firewood production
in an organic corn alley-cropping practice in the humid tropics. J.
Tropical Agriculture. (In Press)
Leblanc, H.A., P. Nygren, and R.L. McGraw. 2006.
Green mulch decomposition and nitrogen Release from leaves of two Inga
spp. in an organic alley-cropping practice in the humid tropics. Soil
Biology and Biochemistry. 38:349-358.
McGraw, R.L. and J.H. Houx. 2006. Flood tolerance
of herbaceous grasses and legumes. Agronomy Abstracts (CD-ROM), ASA
Madison, WI.
Shannon, J. G., R. L. McGraw, D. A. Sleper, J.
Lee, and H.T. Nguyen. 2006. Evaluation of soybean plant introductions
for tolerance to soil waterlogging. Agronomy Abstracts (CD-ROM), ASA
Madison, WI.
Shannon, J. G., W. E. Stevens, W. J. Wiebold, R.
L. McGraw, D. A. Sleper, and H.T. Nguyen. 2006. Breeding soybeans for
improved tolerance to flooding. Proceedings of the 60th Annual
American Seed Trade Association Soybean Research Conference.
Stamps, W.T., T.L. Woods, H.E. Garrett, and M.J.
Linit. 2006. Arthropod communities in temperate agroforestry: Theory
and reality. Kansas Entomological Society Annual Meeting. Columbia, MO
(Poster).
Stamps, W.T., T.L. Woods, R.L. McGraw, and M.J.
Linit. 2006. Arthropod communities in monocropped and black walnut
intercropped alfalfa. Entomological Society of America Annual Meeting.
Indianapolis, ID (Poster).
Van Sambeek, J. W.; McGraw, Robert L.; Kabrick,
John M.; Coggeshall, Mark V.; Unger, Irene M.; Dey, Daniel C. 2006.
Developing a field facility for evaluating flood tolerance of hardwood
seedlings and understory ground covers. In: Buckley, D.S. and others,
editors. Fifteenth Central Hardwood Forest Conference. Gen. Tech. Rep.
SRS-Ashville, NC: U.S. Department of Agriculture, Forest Service,
Southern Research Station: (accepted).
McGraw, R.L., W.T. Stamps, and M.J. Linit. 2005.
Yield and maturation of alfalfa in a black walnut alley-cropping
practice. Proceedings of the 9th annual North American Agroforestry
Conference. Rochester, MN. (CD-ROM) 5pp.
McGraw, R.L., W.T. Stamps, and M. Linit. 2005.
Alfalfa yield, forage quality, and maturation in a black walnut
alley-cropping practice. ASA-CSSA annual meeting. Salt Lake City, UT.
In Agronomy Abstracts. ASA, Madison, WI. (CD-ROM)
Stamps, W.T., T.W. Woods, R.L. McGraw, and M.J. Linit. 2005.
Arthropod communities in temperate agroforestry: theory and reality. Proceedings
of the 9th annual North American Agroforestry Conference. Rochester, MN. (CD-ROM)
6pp.
Leblanc H.A., R.L. McGraw, P. Nygren, and C. LeRoux. 2005.
Neotropical legume tree Inga edulis forms N2-fixing symbiosis with fast-growing
Bradyrhizobium strains. Plant and Soil (In Press)
Shockley, F.W., R.L. McGraw, and H.E. Garrett. 2004. Effects
of Rhizobium and arbuscular mycorrhiza on the growth and nutrient concentration
of two native legumes. Agroforestry Systems. 60:137-132.
McGraw R.L., F.W. Shockley, J.F. Thompson, and C.A. Roberts.
2004. Evaluation of native legume species for forage yield, quality, and seed
production. Native Plants J. 5:152-158.
Wen, L., J.E. Williams, R.L. Kallenbach, C.A. Roberts, P.R.
Beuselinck, and R.L. McGraw. 2004. Cattle prefenentially select birdsfoot trefoil
from mixtures of tall fescue and birdsfoot trefoil. Online. Forage and Grazinglands
doi:10.1094/FG-2004-0924-01-RS.
McGraw, R.L., F.W. Shockley, and T. Elam. 2003. Effects of
temperature on germination of ten native legume species. Native Plants J. 4:5-9.
Wen, L., C.A Roberts, J.E. Williams, R.L. Kallenbach, P.R
Beuselinck, and R.L. McGraw. 2003. Condensed tannin concentration of rhizomatous
and non-rhizomatous birdsfoot trefoil in grazed mixtures and monocultures. Crop
Sci. 43:302-306.
McGraw, R.L. and C.J. Nelson. 2002. Legumes for northern areas.
Chapter 8. In: Barnes, R.F, C.J. Nelson, M. Collins, and K.J. Moore (eds.) Forages
and introduction to grassland agriculture. 6th edition. Iowa State Press. Ames
Iowa. p. 556.
Springer, T.L., R.L. McGraw, and G.E. Aiken. 2002. Variation
of condensed tannins in roundhead lespedeza germplasm. Crop Science 42:2157-2160.
Wen, L., R.L. Kallenbach, J.E. Williams, C.A. Roberts, P.R.
Beuselinck, R.L. McGraw, and H.R. Benedict. 2002. Performance of steers grazing
rhizomatous and non-rhizomatous birdsfoot trefoil in pure stands and in tall
fescue mixtures. J. Ani. Sci. 80:1970-1976.
Kallenbach, R.L., R.L. McGraw, P.R. Beuselinck, and C.A. Roberts.
2001. Summer and autumn growth of rhizomatous birdsfoot trefoil. Crop Science.
41:149-156.
McGraw, R.L. N. E. Navarrete-Tindall, and J.W. Van Sambeek.
2001. Effect of shade on growth and nodulation of six native legumes with potential
for use in agroforestry. 7th Biennial Conference on Agroforestry in North America
Abstracts. August 13-15, Regina, Saskatchewan, Canada p 50.
Leblanc, H.A., R.L. McGraw, and N. E. Navarrete-Tindall. 2001.
Characterization of rhizobia bacteria isolated from Inga edulis, a multipurpose
tree used in agroforestry. 7th Biennial Conference on Agroforestry in North
America Abstracts. August 13-15, Regina, Saskatchewan, Canada. p 51.
Lin, C.H., R.L. McGraw, M.F. George, and H.E. Garrett. 2001.
Nutritive quality and morphological development under partial shade of some
forage species with agroforestry potential. Agroforestry Systems. 53(3):269-281.
McGraw, R.L., Navarrete-Tindall, N. E., J. W. Van Sambeek.
2000. Effects of shade on growth and nodulation of selected native legumes.
Agron. Abstrs. p. 140.
Garrett, H.E. and R.L. McGraw. 2000. Chapter 6. Alley cropping
practices. In H.E. Garrett, W.J. Rietveld and R.F. Fisher (eds.) North
American agroforestry: an integrated science and practice. Amer. Soc. of Agron.,
Inc. pp. 149-188.
Beuselinck, P.R. and R.L. McGraw. 2000. Vestigial corolla
in flowers of Lotus corniculatus L. Crop Sci. 40:964-967.
Lin, C.H., R.L. McGraw, M.F. George, and H.E. Garrett. 1999.
Shade effects of forage crops with potential in temperate agroforestry practices.
Agroforestry Systems 44:109-119.
Lehmkuhler, J.W., M.S. Kerley, H.E. Garrett, R.L. McGraw,
and B. Cutter. 1999. Comparison of continuous and rotational silvopastoral systems
for established walnut plantations. Agroforestry Systems 44:267-279.
Alley J.L., H.E. Garrett, R.L. McGraw, P.J. Dwyer and C.A.
Blanche. 1999. Forage legumes as living mulches for trees in agroforestry practices.
Agroforestry Systems 44: 281-291.
McGraw, R.L. and J.F. Thompson. 1999. Yield and forage quality
of native legumes. p. 1512. In Agronomy Abstracts. ASA, Madison, WI.
Lehmkuhler, J.W., M.S. Kerley, H.E. Garrett, R. McGraw, and
B. Cutter. 1999. Comparison of continuous and rotational silvopastoral systems
for established walnut plantations. Proc. 5th Conf. on Agroforestry in North
America. Ithaca, N.Y. August 3-6, 1997. pp 89- 94.
Lin, C.H., R.L. McGraw, M.F. George, and H.E. Garrett. 1999.
Shade effects on forage crops with potential in agroforestry alley- cropping
systems. Proc. 5th Conf. on Agroforestry in North America. Ithaca, N.Y. August
3-6, 1997. pp 156-161.
Alley, J.L., H.E. Garrett, R.L. McGraw, and J.P. Dwyer. 1999.
Forage legumes as living mulches for trees in agroforestry systems. Proc. 5th
Conf. on Agroforestry in North America. Ithaca, N.Y. August 3-6, 1997. pp 161-164.
Grebrehiwot, L., R.L. McGraw, and G. Assefa. .1997. Productivity
and forage quality of perennial grasses interseeded with annual legumes. Trop.
Agric. 74:173-179.
Fungi are influential members of forest communities. Most plants require beneficial mycorrhizal fungi to survive such as truffles (Tuber species). Other fungi recycle forest debris such as shi'itake (Lentinula edodes), oyster mushrooms (Pleurotus species), and the morels (Morchella species). There are also fungi such as the honey mushroom (Armillaria species) and the hen-of-the-woods (Grifola frondosa) which can begin recycling trees even before they die because they are parasites. Throughout my career, I have studied the ecology of fungi. My current research highlights the cultivation of the gourmet truffle fungi for agroforestry. I am also interested in the ecology of morel mushrooms with the goal of enhancing natural fruiting. Another important aspect of my research focuses on the ecology of forest fungi such as Armillaria species, with particular emphasis on their capacity to produce light, a process termed bioluminescence. Publications Pruett, G.E., J.N. Bruhn, and J.D. Mihail. 200X. Temporal dynamics of ectomycorrhizal community composition on roots systems of oak seedlings infected with Burgundy truffle. Mycological Research: In Press. Pruett, G.E., J.N. Bruhn, and J.D. Mihail. 200X. Greenhouse production of Burgundy truffle colonized oak seedlings: comparison of potting methods. New Forests: In Press. Pruett, G.E., J.N. Bruhn, and J.D. Mihail. 2008. Colonization of Pedunculate oak by the Burgundy truffle fungus is greater with natural than pelletized lime. Agroforestry Systems 72:41-50. Mihail, J.D., J.N. Bruhn, and P.E. Bonello. 2007. Spatial and temporal patterns of morel fruit body production. Mycological Research 111:339-346. Mihail, J.D., and J.N. Bruhn. 2007. Bioluminescence is widespread within the Kingdom Fungi. Opera Mycologica 1:28-33. Mihail, J.D., and J.N. Bruhn. 2007. Temporal dynamics of bioluminescence of the fungi Armillaria gallica, A. mellea, and A. tabescens. Mycologia 99:341-350.
Research centers on the study of vertebrate population ecology at three scales: physiological processes, individual space use and resource selection and population-level dynamics. Many of these topics overlap within individual studies and include several themes. At each scale, he focuses on rigorous development and evaluation of field, laboratory, and statistical methods and application of these methods to help answer important conservation issues. His research has focused on large mammals, but increasingly he works with other taxa to address questions of interest. Publications: Millspaugh, J.J., and F.R. Thompson, III, editors. 2009. Models for Planning Wildlife Conservation in Large Landscapes. Elsevier Science, San Diego, California, USA. 674 pages. He, Z., J. Eggert, X. Wen, J. Millspaugh, R. Moll, J. Beringer, and J. Sartwell. 2008. Energy-aware portable video communication system design for wildlife activity monitoring. IEEE Communications: In press. Millspaugh, J.J., R.A. Gitzen, D.S. Licht, S. Amelon, T.W. Bonnot, D.S. Jachowski, D.T. Jones-Farrand, B.J. Keller, C.P. McGowan, M.S. Pruett, C.D. Rittenhouse, and K.M. Suedkamp Wells. 2008. Effects of culling on bison demographics in Midwestern National Parks. Natural Areas Journal: In press. Millspaugh, J.J., J. Sartwell, R.A. Gitzen, R.J. Moll, and J. Beringer. 2008. A pragmatic view of animal-borne video technology. Trends in Ecology and Evolution: In press. Millspaugh, J.J., J.H. Schulz, T. W. Mong, D. Burhans, D. Walters, R. Bredesen, R.D. Pritchert, and D. C. Dey. 2008. Agroforestry and wildlife benefits. In North American Agroforestry, H. E. Garrett and M. Gold, editors. In press. Rittenhouse, C.D., J.J. Millspaugh, A.B. Cooper, M. Hubbard, S.L. Sheriff, and R.A. Gitzen. 2008. Modeling resource selection using polytomous logistic regression and kernel density estimates. Environmental and Ecological Statistics 15:39-47. Rittenhouse, C.D., J.J. Millspaugh, M.W. Hubbard, S.L. Sheriff, and W.D. Dijak. 2008. Resource selection by translocated three-toed box turtles in Missouri. Journal of Wildlife Management 72:268-275. Skalski, J.R., J.J. Millspaugh, and K.E. Ryding. 2008. Effects of asymptotic and maximum age estimates on calculated rates of population change. Ecological Modelling 212:528-535. Skalski, J.R., R.L. Townsend, L.L. McDonald, J.W. Kern, and J.J. Millspaugh. 2008. Type I errors linked to faulty endangered species classification. Journal of Agricultural, Biological, and Environmental Statistics 13:199-220. Suedkamp Wells, K.M., J.J. Millspaugh, M.R. Ryan, and M.W. Hubbard. 2008. Factors affecting home range size and movements of post-fledging grassland birds. Wilson Journal of Ornithology 120: 120-130. Millspaugh, J.J., T. Burke, G. van Dyk, R. Slotow, B.E. Washburn, and R.J. Woods. 2007. Stress response of working African elephants to transportation and safari adventures. Journal of Wildlife Management 71:1257-1260. Moll, R.J., J.J. Millspaugh, J. Beringer, J. Sartwell, and Z. He. 2007. A new view of ecology and conservation through animal-borne video systems. Trends in Ecology and Evolution 22:660-668. Rittenhouse, C.D., J.J. Millspaugh, M.W. Hubbard, and S.L. Sheriff. 2007. Movements of translocated and resident three-toed box turtles. Journal of Herpetology 41:114-120. Ryding, K., J.J. Millspaugh, and J.R. Skalski. 2007. Using time series to estimate the finite rate of population increase from abundance data. Journal of Wildlife Management 71:202-207. Schulz, J.H., R.A. Reitz, S.L. Sheriff, and J.J. Millspaugh. 2007. Attitudes of Missouri small game hunters toward nontoxic shot restrictions. Journal of Wildlife Management 71:628-633. Schulz, J.H., X. Gao, J.J. Millspaugh, and A.J. Bermudez. 2007. Experimental lead ingestion in mourning doves (Zenaida macroura). American Midland Naturalist 158:177-190. Buskirk, S.W. and J.J. Millspaugh. 2006. Metrics of use and
availability in studies of resource selection. Journal of Wildlife Management
70:358-366 (Invited).
Gitzen, R.A., J.J. Millspaugh , and B.J. Kernohan. 2006. Bandwidth selection
for fixed kernel analysis of animal range use. Journal of Wildlife Management:
In press.
Millspaugh, J.J., R.M. Nielson, L. McDonald, J.M. Marzluff, R.A. Gitzen, C.D.
Rittenhouse, M.W. Hubbard, and S.L. Sheriff. 2006. Analysis of resource selection
using utilization distributions. Journal of Wildlife Management 70:384-395 (Invited).
Skalski, J.R., K.E. Ryding, and J.J. Millspaugh. 2005. Wildlife Demography:
Analysis of Sex, Age, and Count Data. Elsevier Science, San Diego, California,
USA. 656 pages.
Larson, M.A., F.R. Thompson, III, J.J. Millspaugh, W.D. Dijak, and S.R. Shifley.
2004. Linking population viability, habitat suitability, and landscape simulation
models for conservation planning. Ecological Modelling 180:103-118.
Marzluff, J.M., J.J. Millspaugh, P. Hurvitz, and M.S. Handcock. 2004. Resource
utilization of an avian nest predator: relating resources to a probabilistic
measure of animal use. Ecology 85:1411-1427.
Millspaugh, J.J. and B.E. Washburn. 2004. Use of fecal glucocorticoid metabolite
measures in conservation biology research: considerations for application and
interpretation. General and Comparative Endocrinology 138:189-199.
Washburn, B.E. and J.J. Millspaugh. 2002. Effects of simulated environmental
conditions on fecal glucocorticoid measurements. General and Comparative Endocrinology
127:217-222.
Skalski, J.R. and J.J. Millspaugh. 2002. Generic variance expressions, precision,
and sampling optimization for the sex-age-kill model of population reconstruction.
Journal of Wildlife Management 66:1308-1316.
Millspaugh, J.J. and J.M. Marzluff, editors. 2001. Radio Tracking and Animal
Populations. Academic Press, San Diego, California, USA. 467 pages.
Research: Disturbance ecology of oak dominated forests Teaching: Forest Ecology, Forest Health & Protection, Forest Ecology Field Studies Specific Emphasis: Dr. Muzika's research emphasizes disturbance ecology; particularly long-term changes in forest composition and processes as influenced by both natural and anthropogenic disturbances. Current research efforts within the broad topic of disturbance ecology include the effects of non-indigenous organisms on forest succession and the role of silviculture in moderating such effects. In an attempt to predict the resilience of specific forest types to disturbance, other ongoing research includes studies of the variability of recovery from disturbance and the influence of ecosystem type on the success of establishment of exotic organisms. Understanding plant species distribution and abundance, pre-settlement vegetation, interactions of climate and disturbance, and assessing site-related tree growth and stand development represent other fundamental questions of interest. Selected Publications: Unger, I.M., R.M. Muzika, P.P. Motavalli, and J. Kabrick. 2008. Evaluation of Continuous In Situ Monitoring of Soil Changes with Varying Flooding Regimes. Communications in Soil Science and Plant Analysis 39:1600-1619. Voelker, S.L., R.M. Muzika, and R.P. Guyette. 2008. An investigation of individual tree and stand level factors that influence growth, vigor and decline of red oaks in the Ozarks. Forest Science 54:8-20. Unger, I.M., and R.M. Muzika. 2008. Influence of Microtopography on Soil Chemistry and Understory Riparian Vegetation. In: Proceedings of the 16th Central Hardwood Forest Conference. e-Gen. Tech. Rep. NRS-P-24. Jacobs, D.F. and Michler, C.H. Eds. April 8-9, 2008; Lafayette, IN. Duchamp, J.E., M.D. Yates, R.M. Muzika and R.K. Swihart. 2006.
Estimating probabilities of detection for bat echolocation calls: an application
of the double observer method. Wildlife Society Bulletin 34:408-412.
Guyette, R.P., M. C. Stambaugh, A. Lupo, R.M. Muzika and D.C.
Dey. 2006. Oak growth in Midwestern North America linked with post glacial climate
epochs in the North Atlantic. PAGES news 14:21-22.
Guyette, R.P., M. C. Stambaugh, R.M. Muzika and E.R. McMurry.
2006. Fire history at the southwestern great plains margin, Capulin Volcano National
Monument. Great Plains Research 16:161-172.
Voelker, S.L., R.M. Muzika, R.P. Guyette, and M.C. Stambaugh,
2006. Historic CO2 Enhancement declines with age in Quercus and Pinus . Ecological
Monographs 76(4): 549-564.
Muzika, R.M., S.T. Grushecky, A.M. Liebhold, and R.L. Smith.
2004. Using thinning as a management tool for gypsy moth: the influence on small
mammal abundance. Forest Ecology and Management 192:349-359
Muzika, R.M., R.P. Guyette, T. Zielonka, and A. M. Liebhold.
2004. The influence of O3, NO2 and SO2 on growth of Picea abies and Fagus sylvatica
in the Carpathian Mountains. Environmental Pollution 130: 65-71
Muzika,R.M., R.P. Guyette, T. Zielonka, and A.M. Liebhold.
2002. The influence of air pollution on tree growth in the Carpathian Mountains.
pages 185-193 from: Effects of Air Pollution on Forest Health and Biodiversity
in Forest of the Carpathian Mountains. NATO Scientific Affairs Division;
IOS Press, Amsterdam.
Guyette,R.P., R.M.Muzika and D.C. Dey. 2002. Dynamics of an
anthropogenic fire regime. Ecosystems 5:472-486.
Stambaugh, M.C., R.M. Muzika and R.P. Guyette. 2002. Disturbance
and Vegetation Dynamics in old -growth shortleaf pine (Pinus echinata
Mill.) forest within the Ozark Highlands, Missouri. Natural Areas Journal
28:108-119.
Guyette, R.P., W.G. Cole, D.C. Dey, and R.M. Muzika. 2002.
Age distributions of large woody debris in riparian carbon pools. Canadian
Journal od Fisheries and Aquatic Sciences 59(3):578-585
Muzika, R.M., A.M. Liebhold, and M.J. Twery. 2000. Dynamics
of twolined chestnut borer as influenced by gypsy moth defoliation and selection
thinning. Agricultural and Forest Entomology 2:283-289.
Muzika, R.M. and A. M. Liebhold. 2000. A critique of silvicultural
approaches to managing defoliating insects in North America. Agriculture
and Forest Entomology 2 (2): 97-105
Liebhold, A.M., J. S. Elkinton, D.W. Williams, R.M. Muzika.
2000. What causes outbreaks of gypsy moth in North America? Researches in
Population Ecology 42:257-266.
Muzika,R.M. and A.M Liebhold. 1999. Changes in radial increment
in host and non-host tree species with gypsy moth defoliation. Canadian Journal
of Forest Research 29:1365-1373.
Muzika, R.M. A.M. Liebhold and K.W. Gottschalk. 1998. The
effects of silvicultural management on gypsy moth dynamics and impact: an eight
year study. Pp:261-268 in: Proceedings: population dynamics, impacts and integrated
management of forest defoliating insects. M.L. McManus and A.M. Liebhold (eds.)
USDA Forest Service General Technical Report NE-247.
Liebhold, A.M., R.M. Muzika, and K.W. Gottschalk. 1998. Does
forest thinning affect gypsy moth dynamics? Forest Science 44:239-245.
Muzika, R.M., S.L. Stephenson, H.S. Adams, D.M. Lawrence, and
G.W. Miller. 1998. Patterns of overstory composition on the Fernow Experimental
Forest and adjacent portions of Otter Creek Wilderness area. Appalachian Biogeography.
Publication of the Virginia Museum of Natural History.
Muzika, R.M. and A.M. Liebhold. 1997. Ecological effects of
introduced species in North America. Acta Phytopathologica et Entomologica
Hungarica 32:161-170.
Muzika, R.M., A.M. Liebhold and K.W. Gottschalk. 1997. Silvicultural
methods of Lymantria dispar L. management: effects on Agrilus bilineatus
(Weber) populations. Pp. 9-14 in: Proceedings: Integrating cultural tactics
into the management of bark beetle and reforestation pests. Gregoire et al.
(eds.) USDA General Technical Report NE-236.
Muzika, R.M and M.J. Twery. 1997. Early-Season Activity and
Habitat Characteristics of Terricolous Spider Families (Araneae) in an Appalachian
Oak-Mixed Hardwood Forest. Environmental Entomology 26:497-506.
Muzika, R.M., R. Hunsucker and T. Demeo. 1996. Botanical reconnaissance
of Big Run Bog candidate research natural area. USDA Forest Service Northeastern
Forest Experiment Station General Technical Report NE-223.
Muzika, R.M. and M.J. Twery. 1995. Woody species regeneration
following defoliation and thinning in shardwood stands of north-central West
Virginia. Proceedings of the 10th Central Hardwoods Forest Conference
pp.326-340.
Muzika, R.M. 1993. Terpenes and phenolics in response to nitrogen
fertilization: a test of the carbon/nutrient balance hypothesis. Chemoecology
4:3-7.
Muzika, R.M. and K.S. Pregitzer. 1992. Effect of nitrogen
fertilization on leaf phenolic production of grand fir seedlings. Trees -
Structure and Function 6:241-244.
Muzika, R.M., C.L. Campbell, A.L. Smith and J.W. Hanover.
1990. Comparison of techniques for extracting volatile chemicals from conifer
needles. Journal of Chemical Ecology 16:2713-2722.
Muzika, R.M, K.S. Pregitzer and J.W. Hanover. 1989. Changes
in terpene production with fertilization of grand fir (Abies grandis)
seedlings. Oecologia 80:485-489.
Muzika, R.M, J.B. Gladden, and J.D. Haddock. 1987. Structural
and functional aspects of succession in Southeastern floodplain forests following
a major disturbance. American Midland Naturalist 117:1-9.
Evaluation of native cool season grasses and native shrubs in agroforestry practices for small and middle farms as ground covers to reduce dependency on chemicals, increase biodiversity, enhance habitat for wildlife, and other potential uses. Studies included are shade tolerance trials of native cool season grasses, evaluating native shrubs to provide cover for quail and other wildlife, and using native legume shrubs as companion crops in pecan orchards. Native plant demonstrations are also established at the HARC arboretum and prairie restoration -including native cool season grasses- is underway in marginal land. Recent Publications: Navarrete-Tindall, N.E. and J.W. Van Sambeek. 2007. Benefits
of Using Native Cool Season Grasses as Living Mulches in Hardwood Plantations.
2007 Missouri Natural Resources Conference, Osage Beach, Missouri. Abstract.
Navarrete-Tindall, N.E and T. Reinbott. 2006. Promoting the use of native
plants through research and education in an Agricultural Experimental Station
in Missouri. In proceedings: 2006 North American Prairie Conference, July 23-27,
2006. Abstract.
Navarrete-Tindall, Nadia.E and J. W. Van Sambeek. 2006. Seed Production of
cluster fescue (Festuca paradoxa Desv.) a native cool season grass. 2006 Missouri
Natural Resources Conference. Abstract. http://aes.missouri.edu/bradford/research/rr05/interp/horticulture/restoringplant.stm
J.W. Van Sambeek, D. Wallace, N.E. Navarrete-Tindall, G. Garrett, R. McGraw,
et.al 2006. Evaluating shade tolerance of ground covers for use in Agroforestry.
8th Annual UMCA Program Review. p. 38-42
Navarrete-Tindall, N.E. 2006. Evaluating growth of quail cover bundle shrubs
in several locations in Missouri. Center for Agroforestry. 8th Annual UMCA Program
Review. p. 25
Agroforestry-related research interests relate to biomass production and carbon sequestration of rapidly-growing poplars in dense, short-rotation plantations. Also of interest are genetically-based canopy development and photosynthetic differences that may account for variation in productivity among clones. Publications Jose S, Gillespie AR, Pallardy SG. 2004. Interspecific interactions in temperate agroforestry. Agrofor. Syst. 61:237-55. Pallardy SG, Gibbins DE, Rhoads JL. 2003. Biomass production by two-year-old poplar clones on floodplain sites in the Lower Midwest, USA. Agrofor. Syst. 59:21-6. Miller A, Pallardy SG. 2001. Resource competition across the
crop-tree interface in a maize-silver maple temperate alley cropping stand in
Missouri. Agrofor. Syst. 53:247-59.
Robert provides statewide leadership for MU Extension wildlife, fisheries and aquaculture educational programs here in Missouri. He works closely with MU Extension Centers and Extension Regional Specialists to develop educational programs that meet the objectives for a variety of clientele across the state. In addition he provides leadership for the Missouri Master Wildlifer Program, the Missouri Master Naturalist Program, and collaborates with the Extension Forester in conducting the Missouri Woodland Steward Program. Exploring the relationships between land use and the wildlife community within the forest and agricultural ecosystem in Missouri is part of Robert's research interest. He is also interested in developing agroforestry practices which enhance habitats for a variety of wildlife and which meet the goals and objectives of the private landowner. Publications Sudkamp, S., R.N. Chapman, and R.A. Pierce II. 2008. Quail Friendly Plants of the Midwest. MU Extension Publication MP903. 121pp. Walter, D., and R.A. Pierce II. 2008. Integrating agroforestry practices for wildlife habitat. Agroforestry in Action Publication AF1012. University of Missouri Center for Agroforestry. 16pp. Pierce, R.A. II, K.C. Moore, and S.F. Matthews. 2008. Landowners' guide to lease hunting in Missouri. MU Extension Guide G9420. 8pp. Pierce, R.A. II, J. Parcell, C. Boessen, R. Hayward, and C. Hicks. 2007. Paddlefish Production: Opportunities for Missouri pond and lake owners. MU Extension Guide G9470. 4pp. White, B., P. Graham, and R.A. Pierce II. 2007. Missouri Bobwhite Quail Habitat Appraisal Guide: Assessing your farm's potential for bobwhites. MU Extension Publication MP902. 15pp. Pierce, R.A. II, and E. Gallagher. 2005. Ecology of Northern Bobwhite Quail in Missouri. MU Extension Guide G9431. 8pp. Pierce R. A. II, B. White, and P. Graham. 2005. Habitat Management Practices for Bobwhite Quail. MU Extension Guide G9432. 4pp. Pierce, R.A. II, D.T. Farrand, and W.B. Kurtz. 2001. Projecting the bird community response resulting from the adoption of shelterbelt agroforestry practices in eastern Nebraska. Agroforestry Systems 53: 333-350.
Agroforestry related interests include the individual and institutional factors that affect landowner adoption of agroforestry practices, and the development of public programs that facilitate changes that are socially and economically viable, as well as environmentally sustainable. Other related research interests include attitudes and values regarding forest resources and social conflicts over policies and programs affecting these resources. Present research project areas include southeast and northeast Missouri and forested areas of the Czech Republic and Slovakia.
Terrell is an entomologist whose research interests include the examination of arthropod diversity and pest population dynamics in an agroforestry practice of alley cropping oilseed or forage crops with nut trees. Terrell is also involved in the population and chemical ecology of chestnut pests with Dr. Bruce Barrett, and collaborates with colleagues in Turkey on agroforestry practices in that country. SELECTED PUBLICATIONS Stamps, W.T., R.L. McGraw, L. Godsey, and T.L. Woods. 2008. The ecology and economics of insect pest management in nut tree alley cropping systems in the Midwestern United States. Agriculture, Ecosystems & Environment. (In Press, Corrected Proof available online: doi:10.1016/j.agee.2008.06.012). McGraw, R.L., W.T. Stamps, J.H. Houx, and M.J. Linit. 2008. Yield, maturation, and forage quality of alfalfa in a black walnut alley-cropping practice. Agroforestry Systems (in press). Akbulut, S., A. Keten, and W.T. Stamps. 2008. Population dynamics of Monochamus galloprovincialis Olivier (Coleoptera: Cerambycidae) in two pine species under laboratory conditions. Journal of Pest Science. 81:115-121. Stamps, W.T., Dailey, T.V., Gruenhagen, N.M., and Linit, M.J. 2008. Herbaceous field borders have minor impact on corn yield. Online. Crop Management doi:10.1094/CM-2008-0701-01-RS. Stamps, W.T., T.V. Dailey, and N.M. Gruenhagen. 2007. Infestation of European corn borer Ostrinia nubilalis in Midwestern USA fields with herbaceous borders. Agriculture, Ecosystems and Environment. 121(4): 430-434. Akbulut, S., A. Keten, and W.T. Stamps. 2003. Effect of alley cropping on crops and arthropod diversity in Dulze, Turkey. J. Agronom. Crop Sci. 189: 261-269. Stamps, W.T., T.L. Woods, M.J. Linit, and H.E. Garrett. 2002. Arthropod diversity in alley cropped black walnut (Juglans nigra L.) stands in eastern Missouri, USA. Agroforestry Systems. 56(2): 167-175. Stamps, W.T. and M.J. Linit. 2002. Oviposition choice by the black walnut curculio (Coleoptera: Curculionidae): A ten-year study. Environmental Entomology. 31(2): 281-284. Stamps, W.T. and M.J. Linit. 1998. Plant diversity and arthropod communities: Implications for temperate agroforestry. Agroforestry Systems. 39:73-89.
Chris's primary research interest is in methods to improve survival and establishment of woody plants after transplanting to the field. Based on research at HARC, a low-tech hydroponic system called the "Missouri Gravel Bed" has been developed that allows bare root trees and shrubs to be planted any time of the year with outstanding survival. This technique shows excellent promise for facilitating Agroforestry planting operations. Other interests include the commercial production of pine needles in Missouri for use as landscape mulch and composting of on-farm-produced chips of silver maple for use as a soil amendment or potting soil. Publications: Bohnert. C.A., C. Starbuck, and S. Anderson. 2008. Amending a Gravel Based Growing Medium with Calcined Clay Improves Physical Properties and Seedling Growth. J. Environ. Hort. 26:149-56 Pinzon, O.P., R.M. Houseman and C.J. Starbuck. 2006. Feeding, weight change, survival, and aggregation of Reticulitermes flavipes (Kollar) (Isoptera: Rhinotermitidae) in seven varieties of differentially-aged mulch. J. Environ. Hort. 24:1-5. Means N.E., C.J. Starbuck, R.J. Kremer, and L.W. Jett. 2005. Effects of a food waste-based soil conditioner on soil properties and plant growth. Compost Sci. and Util. 13:116-121. Starbuck C., D.K. Struve and H. Mathers. 2005. Bareroot and balled-and-burlapped red oak and green ash can be summer transplanted using the Missouri Gravel Bed System. HortTechnology. 15:122-127. Sharma, J., L.W. Zettler, J.W. VanSambeek and C.J. Starbuck. 2002. Symbiotic seed germination and mycorrhizae of the Federally-threatened Platanthera praeclara (orchidaceae). Am. Midl. Nat. 149:104-120. Proceedings: Kirk, S.D.; Starbuck, C.J. and Van Sambeek, J.W. 2005. Missouri Gravel Bed and a Pot-in-Pot system superior to white polyethylene and foam for overwintering Syringa pubescens subsp. patula liners. In: The International Plant Propagators' Combined Proceedings 54: 516-521. Kirk, S.D., C.J. Starbuck and J.W. Van Sambeek. 2004. Comparing the growth of Gymnocladus dioicus in a pea gravel medium amended with calcined clay or expanded shale. In: The International Plant Propagators' Combined Proceedings 53:599-601. Gowdy, M., C. Starbuck and R. Munson. 2002. Summer-planting bare root Buxus sinica var. insularis 'Wintergreen' shrubs on the University of Missouri campus from a Missouri Gravel Bed. In: The International Plant Propagators' Combined Proceedings. 52: 518. Abstract: Starbuck, C. J. 2006. The Missouri Gravel Bed: A method facilitating season-long planting of bare root trees and shrubs. HortScience. 41(4) July.
Research interests including working with a wide variety of horticultural and tree crops and crop production techniques, with most projects being relevant to agroforestry. Projects at the Center include black walnuts, pecans, hickories, pawpaws, persimmons, Ozark chinkapins, elderberries, apples, asparagus, wildflowers, medicinal herbs and a solar-heated greenhouse. Additionally, Andy has consulted on international agricultural projects in Russia, Cameroon, Vietnam, Sri Lanka, Uzbekistan, Korea and Bolivia.
Refereed Journal Articles Finn, C.E., A.L. Thomas, P.L. Byers, and S. Sere. 2008. Evaluation of American (Sambucus canadensis) and European (S. nigra) Elderberry Genotypes Grown in Diverse Environments and Implications for Cultivar Development. Hortscience 43(5):1385-1391. Thomas, A.L., D.K. Brauer, T.J. Sauer, M.V. Coggeshall, and M.R. Ellersieck. 2008. Cultivar Influences Early Rootstock and Scion Survival in Grafted Black Walnut. Journal of the American Pomological Society 62(1):3-12. Thomas, A.L., P.L. Byers, C.E. Finn, Y.-C. Chen, G.E. Rottinghaus, A.M. Malone, and W.L. Applequist. 2008. Occurrence of Rutin and Chlorogenic Acid in Elderberry Leaf, Flower, and Stem in Response to Genotype, Environment, and Season. In: G. Gardner and L.E. Craker (eds.). Plants as Food and Medicine: The Utilization and Development of Horticultural Plants for Human Health. Acta Horticulturae 765:197-206. Thomas, A.L., R.J. Crawford, Jr., G.E. Rottinghaus, J.K. Tracy, W.L. Applequist, B.E. Schweitzer, L.J. Havermann, S.F. Woodbury, J. Miller, M.R. Ellersieck, and D.E. Gray. 2007. Occurrence of 23-epi-26-deoxyactein and Cimiracemoside A in Various Black Cohosh Tissues Throughout the Growing Season. HortScience 42(3):535-539. Thomas, A.L., R.J. Crawford, Jr., L.J. Havermann, W.L. Applequist, B.E. Schweitzer, S.F. Woodbury, and J.S. Miller. 2006. Effect of Planting Depth, Planting Season, and Fungicide Treatment on Establishment of Black Cohosh in a Poorly-drained Soil. HortScience 41(2):374-376. Thomas, A.L. and W.R. Reid. 2006. Hardiness of Black Walnut and Pecan Cultivars in Response to an Early Hard Freeze. Journal of the American Pomological Society 60:90-94. Brauer, D., A. Ares, W. Reid, A. Thomas, and J.P. Slusher. 2006. Nut-yield Variations and YieldDiameter Relationships in Open-canopy Black Walnut Trees in Southern USA. Agroforestry Systems 67(1):63-72. Thomas, A.L., S. Gibson, and N.J. Holmberg. 2005. The Flora and Natural History of Woods Prairie, a Nature Reserve in Southwestern Missouri. Missouriensis 25:1-19. Missouri Native Plant Society, St. Louis, MO. Thomas, A.L. and D. Schrock. 2004. Performance of 67 Native Midwestern U.S. Perennials in a Low-maintenance Landscape. HortTechnology 14(3):381-388. Thomas, A.L., M.E. Muller, B.R. Dodson, M.R. Ellersieck, and M. Kaps. 2004. A Kaolin-based Particle Film Suppresses Certain Insect and Fungal Pests while Reducing Heat Stress in Apples. Journal of the American Pomological Society 58(1):42-51. Thomas, A.L., and T.C. Kaspar. 1997. Maize Nodal Root Response to Time of Soil Ridging. Agronomy Journal 89:195-200. Thomas, A.L., and L.A. Carpenter-Boggs. 1995. Mycorrhizal Colonization of Ancistrocladus korupensis, a New Tropical Forest Species with Anti-HIV Activity. Journal of Herbs, Spices, and Medicinal Plants 3(2):51-54. Thomas, A.L. and T.C. Kaspar. 1995. Maize Nodal Root Response to Soil Ridging and Three Tillage Systems. Agronomy Journal 87:853-858. Polacco, J.C., A.L. Thomas, and P.J. Bledsoe. 1982. A Soybean Seed Urease-Null Produces Urease in Cell Culture. Plant Physiology 69:1233-1240. Johnson, H.-Y., P. Byers, J. Hu, A. Thomas, and S. Tesfaye. 2008. Assessment of Genetic Diversity among Elderberry (Sambucus sp.) Species, Cultivars, and Wild Selections by TRAP Technique. HortScience 43(4):1137-1138. Thomas, A.L, and W.R. Reid. 2007. Productivity and Characteristics of Six Black Walnut Cultivars in Missouri. In: A. Olivier and S. Campeau (Eds.) When Trees and Crops Get Together. Proceedings of the 10th North American Agroforestry Conference: 197. The Association for Temperate Agroforestry. Abad, Z.G., J. Phillips, and A.L. Thomas. 2005. Black root and crown rot of black cohosh (Actaea racemosa L.) is associated to Phytophthora and Pythium species. Phytopathology 95:S1. Byers, P. and A.L. Thomas. 2005. Elderberry Research and Production in Missouri. Proceedings of the 25th Missouri Small Fruit and Vegetable Conference 25:91-97. Southwest Missouri State University. Springfield, MO. Brauer, D., A. Ares, and A. Thomas. 2004. Relationships between Tree Size and Nut Production for Eastern Black Walnuts. Black Walnut in a New Century: Proceedings of the 6th Walnut Council Research Symposium. Lafayette, IN. Sauer, T.J., S.L. DeFauw, K.R. Brye, J.V. Brahana, J.V. Skinner, W.K. Coblentz, A.L. Thomas, P.D. Hays, D.C. Moffitt, J.L. Robinson, T.A. James, and K.A. Hickie. 2004. N and P Assimilation in a Silvopastoral System Receiving Poultry Litter or Inorganic Fertilizer. Proceedings of the First World Congress of Agroforestry: Working Together for Sustainable Land Use Systems. Orlando, FL. Thomas, A.L., S.L. DeFauw, T.J. Sauer, and D. Brauer. 2004. Hydrologic Influences on the Growth of Young Grafted Black Walnut Trees in Arkansas, USA. Proceedings of the First World Congress of Agroforestry: Working Together for Sustainable Land Use Systems. Orlando, FL. Brauer, D., A. Ares, and A.L. Thomas. 2004. Economics of Eastern Black Walnut Agroforestry Practices: Nut Production of Black Walnut in Relation to Genotype and Tree Size. Proceedings of the First World Congress of Agroforestry: Working Together for Sustainable Land Use Systems. Orlando, FL. Coggeshall, M.V., A.L. Thomas, and J.W. Van Sambeek. 2003. Scion and Rootstock Effect on the Performance of Grafted Black Walnut Cultivars. Combined Proceedings of the International Plant Propagators Society 53:555-557. Thomas, A.L., D. Brauer, J. Rhoads, and J.P. Slusher. 2003. Long-term Effect of Tall Fescue Cover Crop on Black Walnut Growth and Nut Production. In Agroforestry and Riparian Buffers for Productivity and Environmental Stability. Proceedings of the 8th North American Agroforestry Conference, p 342. The Association for Temperate Agroforestry. Thomas, A.L., D. Brauer, T. Sauer, M. Coggeshall, and J. Jones. 2003. Effects of Varieties on Survival of Trees during the Establishment of Nut-forage Alley Cropping Systems at Two Upland Locations in Western Arkansas. In S. Sharrow (Ed.) Agroforestry and Riparian Buffers for Productivity and Environmental Stability. Proceedings of the 8th North American Agroforestry Conference, p 343. The Association for Temperate Agroforestry. Thomas, A.L., and G. Galbraith. 2003. Innovative Land Acquisition and Fund-raising Techniques Used to Preserve a Threatened Missouri Prairie. Proceedings of the 18th North American Prairie Conference. Truman State University Press, Kirksville, MO. Schrock, D., and A. Thomas. 2001. Performance of Native Midwestern Herbaceous Perennials in a Low-maintenance Landscape. Hortscience 36(3):477. Thomas, A.L. and P. Byers. 2000. Multi-locational Elderberry Cultivar and Management Study. Proceedings of the 20th Missouri Small Fruit Conference 20:37-40. Southwest Missouri State University. Springfield, MO. Thomas, A.L. and T.C. Kaspar. 1993. Maize Nodal Root Response to Soil Ridging. 1993 Agronomy Abstracts. American Society of Agronomy. Yamoah, C., V. Eylands, S. Ndiaye, and A. Thomas. 1991. On-farm Research Methods for Hedgerow Intercropping: Agroforestry Research and Extension Methodologies for Soil Fertility Management in Rwanda. In Sara J. Scherr (ed.) Methods for Participatory On-farm Agroforestry Research. International Centre for Research in Agroforestry. Thomas, A.L. 1996 - present. Quarterly articles on horticulture research projects and activities. In Ruminations. University of Missouri-Columbia, Southwest Research Center, Mt. Vernon, MO. Hofherr, P., J. Horner, T. Rickard, G. Stevens, A. Thomas, C. Boessen, M. Morgan and J. Nelson. 2007. Report on Agriculture Assessment for Pyeongtaek City (Korea) and the Characteristics of a High Technology Agriculture Complex. 106 pp. Global Cluster, Pyeongtaek, Republic of Korea. Byers, P.L. and A.L. Thomas. 2005. Elderberry research and production in Missouri. New York Berry News 4(10):14-17. Jett, L.W., and A.L. Thomas. 2005. Growing Asparagus in Missouri. Horticultural Guide G6405. University Extension, University of Missouri, Columbia, MO. Thomas, A.L. and L. Jett. 2004. Performance of Eleven Asparagus Cultivars in Southwest Missouri. Midwest Vegetable Variety Trial Report for 2004. Purdue University Bulletin No. 2004-B17538. Purdue University, West Lafayette, IN. Thomas, A.L., A. Becker, and R.J. Crawford, Jr. Nov. 2004. Metal or Plastic? Which Barrels are Best for Holding Water and Heat in a Passively-heated Greenhouse? Small Farm Today 21(6):32-34. Missouri Farm Publishing, Inc. Clark, MO Thomas, A.L. 2004. Evaluation of Kaolin-based Particle Film Coatings on Insect and Disease Suppression and Heat Stress in Apples. Organic Farming Research Foundation Information Bulletin 13:15-18. Santa Cruz, CA. Thomas, A.L., A. Becker, and R.J. Crawford, Jr. March 2003. An Energy-efficient, Solar-heated Greenhouse Produces Cool-season Vegetables all Winter Long. Small Farm Today 20(2):29-32. Missouri Farm Publishing, Inc. Clark, MO Thomas, A.L. 1999. Woods Prairie: A New Prairie Preserve in Southwest Missouri. Missouri Prairie Journal 20(2):16-17. The Missouri Prairie Foundation. Thomas, A.L. 1997. Tillage Systems: Soil Tillage and Root Development. In McGraw-Hill Yearbook of Science & Technology, 1998. McGraw-Hill, New York. Thomas, A.L. 1996. Kunga... or No Hard Feelings. In At Home in the World: The Peace Corps Story. The United States Peace Corps. Wieland, G.D. and A.L. Thomas. 1995. A Bibliography for Orthodox and Recalcitrant Seed Storage and Management. In Gregory D. Wieland (ed.) Guidelines for the Management of Orthodox Seeds (also in Spanish). Center for Plant Conservation, St. Louis, MO. Thomas, A.L. and C.F. Yamoah. 1995. Keeping Tabs on Pests (in Agroforestry Systems): Leafhoppers and Sesbania. Agroforestry Today 7(2):12.
The primary objective of my research is to quantify environmental benefits of agroforestry. Currently, I am conducting research on influences of agroforestry and grass buffer on water and soil quality. In addressing this issue I am examining how trees and grass buffers change surface and subsurface water quality by reducing runoff, nutrients and sediment when intercropped in rowcrop agriculture. Changes in soil physical properties, soil water dynamics, competition for resources, root length density, nutrient accumulation, and microclimate are being evaluated in an agroforestry alley cropping practice. Soil carbon sequestration, cattle grazing impact on water quality, and prairie restoration are some of the areas in which I have conducted research. Recently, I used X-ray computed tomography to quantify soil porosity, distribution of pores, pore connectivity, and tortuosity as influenced by agroforestry and grass buffers. Publications Udawatta, R.P., C.J. Gantzer, S.H. Anderson, and H.E. Garrett. 2008. Agroforestry and grass buffer effects on high resolution X-ray CT-measured pore characteristics. Soil Sci. Soc. Am. J. 72: 295-304. Schultz, R.C., R.P. Udawatta, T.M. Isenhart, O.C. Marquez, and W.W. Simpkins. 2008. Perennialization of the agricultural landscape. pp xx-yy. In H.E Garrett et al. (ed.) North American agroforestry: an integrated science and practice. American Society of Agronomy Inc. Madison, WI. USA. In Press Udawatta, R.P., S.H. Anderson. 2008. CT-measured pore characteristics of surface and subsurface soils as influenced by agroforestry and grass buffers. Geoderma 145: 381-389. Anderson, S.H., R.P. Udawatta, T. Seobi, and H.E. Garrett. 2008. Soil water content and infiltration in agroforestry buffer strips. Agroforestry Systems In Press Udawatta, R.P., R.J. Kremer, B.W. Adamson, and S.H. Anderson. 2008. Variations in soil aggregate stability and enzyme activities in a temperate agroforestry practice. Applied Soil Ecology 39: 153-160. Kumar, S., S.H. Anderson, L.G. Bricknell, and R.P. Udawatta. 2008. Soil hydraulic properties influenced by agroforestry and grass buffers for grazed pasture systems. J. Soil and water Conserv. 63: 224-232. Udawatta, R.P., S.H. Anderson, C.J. Gantzer, and H.E. Garrett. 2008. Influence of prairie restoration on CT-measured soil pore characteristics. J. Environ. Qual. 37: 219-228. Motavalli, P.P., K.W. Goyne, and R.P. Udawatta. 2008. The environmental impacts of enhanced efficiency nitrogen fertilizers. Crop Management. DOI: 10:1094/CM-2008-0730-02-RV. Myers, D.B., N.R. Kitchen, K.A. Sudduth, S. Grunwald, R.J. Miles, E.J. saddler, and R.P. Udawatta. 2008. Combining proximal and penetrating conductivity sensors for high resolution soil mapping. In: Proceedings of the first global workshop on high resolution digital soil sensing and mapping. Sydney, Australia. Feb. 2-4, 2008. Bailey, N.J., P.P. Motavalli, R.P. Udawatta, and K.O. Nelson. 2008. Soil CO2 emissions in agricultural watershed with agroforestry and grass contour buffer strips. Agrpforestry Systems In Review Udawatta, R.P., R.J. Kremer, H.E. Garrett, and S.H. Anderson. 2008. Soil enzyme activities and physical properties in a watershed managed under agroforestry and row-crop system. Agriculture, Ecosystem & Environment In Press Xiaobo L., S.H. Anderson, and R.P. Udawatta. 2008. X-ray computed tomography for measurement of fluid transport properties. In C.H. Dagli et al. (eds.) Proceedings of the Artificial Neural Networks in Engineering Conference. St. Louis, MO. ASME Press, New York, USA. In Press Xiaobo L., S.H. Anderson, and R.P. Udawatta. 2008. Spatial analysis of CT-measured solute pore water velocity and dispersivity. In C.H. Dagli et al. (eds.) Proceedings of the Artificial Neural Networks in Engineering Conference. St. Louis, MO. ASME Press, New York, USA. In Press Xiaobo L., S.H. Anderson, and R.P. Udawatta. 2008. Fractal analysis of CT-measured solute transport parameters. In C.H. Dagli et al. (eds.) Proceedings of the Artificial Neural Networks in Engineering Conference. St. Louis, MO. ASME Press, New York, USA. In Press Anderson, S.H., Z. Cheng, and R.P. Udawatta. 2008. Application of adaptive grayscale morphological operators for image analysis. Fractal analysis of CT-measured solute transport parameters. In C.H. Dagli et al. (eds.) Proceedings of the Artificial Neural Networks in Engineering Conference. St. Louis, MO. ASME Press, New York, USA. In Press Udawatta, R.P., N.I. Fox, P.P. Motavalli, and K.A. Nelson. 2007. Microclimate differences in agroforestry and grass buffers. pp 65-73. In A. Olivier and S. Campeau (ed.) Economic Opportunities and Environmental Benefits of Agroforestry. When Trees and Crops Get Together. The 10th North American Agroforestry Conference Proceedings, June 10-13, 2007, University Laval, Quebec City, Canada. Udawatta, R.P., R.J. Kremer, H.E. Garrett, and S.H. Anderson. 2007. Soil aggregate stability and enzyme activity in agroforestry and row-cropping systems. pp 165-175. In A. Olivier and S. Campeau (ed.) Economic Opportunities and Environmental Benefits of Agroforestry When Trees and Crops Get Together. The 10th North American Agroforestry Conference Proceedings, June 10-13, 2007, University Laval, Quebec City, Canada. Udawatta, R.P., S.H. Anderson, C.J. Gantzer, and H.E. Garrett. 2006. Agroforestry and grass buffer influence on macropore characteristics: a computed tomography analysis. Soil Sci. Soc. Am. J. 70: 1763-1773. Udawatta, R.P., G.S. Henderson, J.R. Jones, and R.D. Hammer. 2006. Runoff and sediment from row-crop, row-crop with grass strips, pasture, and forested watersheds. J. Water Sciences 19: 137-149. Udawatta, R.P., P.P. Motavalli, H.E. Garrett, and J.J. Krstansky. 2006. Nitrogen and nitrate losses in runoff from three adjacent corn-soybean watersheds. Agriculture, Ecosystems & Environment 117: 39-48. Motavalli, P.P., R.P. Udawatta, K.W. Goyne, and K.A. Nelson. 2006. Environmental issues related to nitrogen management practices in the United States. pp. 59-84. In C.H. Kim (ed.) Proceedings of the International Symposium on Nitrogen Behavior and Effective Management in Agro-Ecosystem, Sept. 21, 2006. Official Record Number 11-1390093-000137-01. National Institute of Agricultural Science and Technology, Rural Development Administration, Republic of Korea. Udawatta, R.P., P.O. Nygren, and H.E. Garrett. 2005 Growth of three oak species during establishment in an agroforestry practice for watershed protection. Can. J. For. Res. 35: 602-609. Seobi, T., S.H. Anderson, R.P. Udawatta, and C.J. Gantzer. 2005. Influences of grass and agroforestry buffer strips on soil hydraulic properties. Soil Sci. Soc. Am. J. 69: 893-901. Udawatta, R.P., S.H. Anderson, and H.E. Garrett. 2005. Tree,
grass, and crop root length densities and soil water content within an agroforestry
buffer system. pp. 1-16. In K.N. Brooks and P.F. Ffolliott (ed.) Moving agroforestry
into the mainstream. The 9th North American Agroforestry Conference Proceedings,
June 12-15, 2005, St. Paul, Minnesota. Dept. of Forest Resources, University
of Minnesota, St. Paul, MN. [non-paginated CD-ROM] Lin, C.H., R.N. Lerch, R.J. Kremer, H.E. Garrett, R.P. Udawatta,
and M.F. George. 2005. Soil microbiological activities in vegetative buffer
strips and their association with herbicide degradation. pp. 1-10. In K.N. Brooks
and P.F. Ffolliott (ed.) Moving agroforestry into the mainstream. The 9th North
American Agroforestry Conference Proceedings, June 12-15, 2005, St. Paul, Minnesota.
Dept. of Forest Resources, University of Minnesota, St. Paul, MN. [non-paginated
CD-ROM] Udawatta, R.P. and G.S. Henderson. 2003. Root distribution relationships to soil properties in Missouri Oak Stands: A productivity index approach. Soil Sci. Soc. Am. J. 67: 1869-1878. Udawatta, R.P., J.J. Krstansky, G.S. Henderson, and H.E. Garrett. 2002. Agroforestry practices, runoff, and nutrient loss: A paired watershed comparison. J. Environ. Qual. 31: 1214-1225. Hammer, R.D, G.S. Henderson, R.P. Udawatta, and D. Brandt.
1995. Soil organic carbon in Missouri Forest-prairie ecotone In: J. M. Kelly
and W.W. McFee, Ed. Carbon Forms and Functions in Forest Soils. Proceedings
of 8th North American Forest Soils Conference, May 9-13, 1993, Gainesville,
Florida. Soil Science Society of America, Inc., Madison, Wisconsin, USA. 201-231. Abstracts Udawatta, R.P., H.E. Garrett, and B. Adamson. 2008. Variations in dissolved soil nutrients in a temperate agroforestry watershed. Agronomy Abstracts 2008. Annual Meetings. Houston, Texas, Oct. 5-9, 2008. American Society of Agronomy, 677, South Segoe Road, Madison, Wisconsin 53711. Udawatta, R.P., R.J. Kremer, P.P. Motavalli, S.H. Anderson, and H.E. Garrett. 2008. Variation in soil enzyme activities in a temperate agroforestry watershed. Agronomy Abstracts 2008. Annual Meetings. Houston, Texas, Oct. 5-9, 2008. American Society of Agronomy, 677, South Segoe Road, Madison, Wisconsin 53711. Kumar, S., S.H. Anderson, and R.P. Udawatta. 2008. Agroforestry and Grass Buffer Influences on CT-Measured Macropores under Grazed Pasture Systems. Agronomy Abstracts 2008. Annual Meetings. Houston, Texas, Oct. 5-9, 2008. American Society of Agronomy, 677, South Segoe Road, Madison, Wisconsin 53711. Veum, K., K.W. Goyne, P.P. Motavalli, R.P. Udawatta, and H.E. Garrett. 2008. Buffer effects on runoff and dissolved organic carbon loss in a corn-soybean rotation using a paired watershed approach. Agronomy Abstracts 2008. Annual Meetings. Houston, Texas, Oct. 5-9, 2008. American Society of Agronomy, 677, South Segoe Road, Madison, Wisconsin 53711. Chu, B., K.W. Goyne, S.H. Anderson, R.P. Udawatta, and C.H. Lin. 2008. Veterinary antibiotic sorption to agroforestry buffers, grass buffer, and cropland soils. Agronomy Abstracts 2008. Annual Meetings. Houston, Texas, Oct. 5-9, 2008. American Society of Agronomy, 677, South Segoe Road, Madison, Wisconsin 53711. Kumar, S., S.H. Anderson, and Udawatta. 2008. Influence of Agroforestry and Grass Buffers on Infiltration for a Grazed Pasture System. Agronomy Abstracts 2008. Annual Meetings. Houston, Texas, Oct. 5-9, 2008. American Society of Agronomy, 677, South Segoe Road, Madison, Wisconsin 53711. Udawatta, R.P., C.J. Gantzer, S.H. Anderson, and S. Assouline. 2008. Synchrotron X-ray computed microtomography of soil pore characteristics affected by compaction. European Geoscience Union General Assembly 2008. Austria Center Vienna, Vienna. April 13-18, 2008. Vienna, Austria. Anderson, S.H., R.P. Udawatta, and C.J. Gantzer. 2008. Pore characteristics measured by high resolution X-ray computed tomography for agroforestry and grass buffers. European Geoscience Union General Assembly 2008. Austria Center Vienna, Vienna. April 13-18, 2008. Vienna, Austria. Udawatta, R.P., R.J. Kremer, S.H. Anderson, and H.E. Garrett. 2007. Soil aggregate stability and enzyme activity in agroforestry and row-cropping systems. Economic Opportunities and Environmental Benefits of Agroforestry. The 10th North American Agroforestry Conference, June 10-13, 2007, Université Laval, Québec City, Canada. Udawatta, R.P., N.I. Fox, P.P. Motavalli, and K.A. Nelson. 2007. Microclimate differences in agroforestry and grass buffers. Economic Opportunities and Environmental Benefits of Agroforestry. The 10th North American Agroforestry Conference, June 10-13, 2007, Université Laval, Québec City, Canada. Kumar, S., S.H. Anderson, L. Bricknell, and R.P. Udawatta. 2007. Animal traffic effects on soil hydraulic properties relative to agroforestry and grass buffers. Agronomy Abstracts 2007. Annual Meetings. New Orleans, Louisiana, Nov. 4-8, 2007. American Society of Agronomy, 677, South Segoe Road, Madison, Wisconsin 53711. Udawatta, R.P., S.H. Anderson, P.P. Motavalli, and H.E. Garrett. 2007. Soil water dynamics under agroforestry and grass buffers. Agronomy Abstracts 2007. Annual Meetings. New Orleans, Louisiana, Nov. 4-8, 2007. American Society of Agronomy, 677, South Segoe Road, Madison, Wisconsin 53711. Udawatta, R.P., N.I. Fox, P.P. Motavalli, and K. Nelson. 2007. Agroforestry and grass buffer effects on microclimate of a corn-soybean rotation. Agronomy Abstracts 2007. Annual Meetings. New Orleans, Louisiana, Nov. 4-8, 2007. American Society of Agronomy, 677, South Segoe Road, Madison, Wisconsin 53711. Bei, C., K.W. Goyne, S.H. Anderson, R.P. Udawatta, and L. Chung-Ho. 2007. Veterinary antibiotic sorption to agroforestry buffer, grass buffer and cropland soils. Agronomy Abstracts 2007. Annual Meetings. New Orleans, Louisiana, Nov. 4-8, 2007. American Society of Agronomy, 677, South Segoe Road, Madison, Wisconsin 53711. Gantzer, C.J., S.H. Anderson, R.P. Udawatta, and A.R.O. Shmuel. 2007. Discriminating power of 3-Dimensional micrometer-scale pore parameters to assess compaction of a Hamra soil. X-ray Computed Tomography of Soil. Aug. 19-22, 2007, University of Guelph, Guelph, Canada. Bricknell, L., S.H. Anderson, S. Kumar, and R.P. Udawatta. 2007. Animal traffic effects on soil hydraulic properties relative to agroforestry and grass buffers. Missouri Natural Resources Conference. Jan. 31- Feb. 2, 2007, Tan-Tar-A Resort, Osage Beach, Missouri. Udawatta, R.P., S.H. Anderson, C. J. Gantzer, and H.E. Garrett. 2006. Computed tomographic characterization of soil pores as influenced by restoration of prairie ecosystems. Agronomy Abstracts 2006. Annual Meetings. Indianapolis, Indiana, Nov. 12-16, 2006. American Society of Agronomy, 677, South Segoe Road, Madison, Wisconsin 53711. Udawatta, R.P., C.J. Gantzer, and S.H. Anderson. 2006. High resolution scanning for evaluation of agroforestry and grass buffer effects on pore characteristics. Agronomy Abstracts 2006. Annual Meetings. Indianapolis, Indiana, Nov. 12-16, 2006. American Society of Agronomy, 677, South Segoe Road, Madison, Wisconsin 53711. Udawatta, R.P., C.J. Gantzer, and S.H. Anderson. 2006. Agroforestry and grass buffer effects on computed tomography-evaluated pore characteristics. Agronomy Abstracts 2006. Annual Meetings. Indianapolis, Indiana, Nov. 12-16, 2006. American Society of Agronomy, 677, South Segoe Road, Madison, Wisconsin 53711. Udawatta, R.P., S.H. Anderson, and C.J. Gantzer. 2006. Agroforestry and grass buffer influences on CT-measured pore characteristics. 18th World Congress of Soil Science, Philadelphia, PA. July 9-15, 2006. American Society of Agronomy, 677, South Segoe Road, Madison, Wisconsin 53711. pp 363. Motavalli, P.P., N.J. Bailey, R.P. Udawatta, and K. Nelson. 2006. Soil carbon dioxide and nitrous oxide efflux in agricultural watersheds with agroforestry and grass contour buffer strips. 18th World Congress of Soil Science, Philadelphia, PA. July 9-15, 2006. American Society of Agronomy, 677, South Segoe Road, Madison, Wisconsin 53711. Anderson, S.H., A. Rachman, C.J. Gantzer, and R.P. Udawatta. 2006. Computed-tomography for measurement of soil macroporosity as affected by stiff-stemmed grass hedges. 18th World Congress of Soil Science, Philadelphia, PA. July 9-15, 2006. American Society of Agronomy, 677, South Segoe Road, Madison, Wisconsin 53711. pp 361. Birk, K.J., R.P. Udawatta, A.R. Lupo, J.A. Lory, and P.P. Motavalli. 2006. The impact of climate and interannual variability on surface runoff and agricultural decision making. Agronomy Abstracts 2006. Annual Meetings. Indianapolis, Indiana, Nov. 12-16, 2006. American society of Agronomy, 677, South Segoe Road, Madison, Wisconsin 53711. Udawatta, R.P., S.H. Anderson, P.P. Motavalli, and H.E. Garrett, 2005. Calibration of reflectrometer sensors for claypan soils. Agronomy Abstracts 2005. Annual Meetings. Salt Lake City, Utah, Nov. 6-10, 2005. American Society of Agronomy, 677, South Segoe Road, Madison, Wisconsin 53711. Udawatta, R.P., H.E. Garrett, and S.H. Anderson. 2005. Agroforestry practices improve water quality: a paired watershed comparison. Agronomy Abstracts 2005. Annual Meetings. Salt Lake City, Utah, Nov. 6-10, 2005. American Society of Agronomy, 677, South Segoe Road, Madison, Wisconsin 53711. Lin, C.H., R.N. Lerch, R.J. Kremer, H.E. Garrett, R.P. Udawatta, and M.F. George. 2005. Soil microbiological activities in vegetative buffer strips and their association with herbicide degradation. Agronomy Abstracts 2005. Annual Meetings. Salt Lake City, Utah, Nov. 6-10, 2005. American Society of Agronomy, 677, South Segoe Road, Madison, Wisconsin 53711. Udawatta, R.P., S.H. Anderson, C.J. Gantzer, and T. Seobi. 2004. Agroforestry and grass buffer effects on CT-measured macropore characteristics. Agronomy Abstracts 2004. Annual Meetings. Seattle, Washington, Oct. 31-Nov. 4, 2004. American society of Agronomy, 677, South Segoe Road, Madison, Wisconsin 53711. Udawatta, R.P., P.P. Motavalli, and H.E. Garrett. 2004. Total nitrogen and nitrate loss in runoff from three adjacent row-cropped watersheds. Agronomy Abstracts 2004. Annual Meetings. Seattle, Washington, Oct. 31-Nov. 4, 2004. American society of Agronomy, 677, South Segoe Road, Madison, Wisconsin 53711. Bailey, N.J., P.P. Motavalli, R.P. Udawatta, and K.A. Nelson. 2004. Soil C and N distribution and gaseous flux due to landscape position and temperate alley cropping practices in an agricultural watershed. Agronomy Abstracts 2004. Annual Meetings. Seattle, Washington, Oct. 31-Nov. 4, 2004. American society of Agronomy, 677, South Segoe Road, Madison, Wisconsin 53711. Udawatta, R.P., P. Nygren, and H.E. Garrett. 2004. Interfacial root densities and soil moisture in a soybean alley cropping practice. First World Congress of Agroforestry. Orlando, Florida, June 27 to July 02, 2004. University of Florida, Gainesvilles, FL 32611. Udawatta, R.P., P.P. Motavalli, and H.E. Garrett. 2003. Phosphorus loss and runoff characteristics: paired agricultural watersheds in a claypan soil. Agronomy Abstracts 2003. Annual Meetings. Denver Colorado, Nov. 2-6, 2003. American society of Agronomy, 677, South Segoe Road, Madison, Wisconsin 53711. Seobi, T., S.H. Anderson, R.P. Udawatta, and C.J. Gantzer. 2003. Influences of agroforestry buffer strips on soil hydraulic properties and infiltration. Agronomy Abstracts 2003. Annual Meetings. Denver Colorado, Nov. 2-6, 2003. American society of Agronomy, 677, South Segoe Road, Madison, Wisconsin 53711. Udawatta, R.P., R.D. Hammer, and H.E. Garrett. 2002. Soil carbon sequestration in an agroforestry alley cropping practice. Agronomy Abstracts 2002. Annual Meetings. Indianapolis, Indiana, Nov. 10-14, 2002. American society of Agronomy, 677, South Segoe Road, Madison, Wisconsin 53711. Farrand, D.T., R.P. Udawatta, and H.E. Garrett. 2002. Predicting environmental benefits of agroforestry practices in northern Missouri using APEX. Agronomy Abstracts 2002. Annual Meetings. Indianapolis, Indiana, Nov. 10-14, 2002. American society of Agronomy, 677, South Segoe Road, Madison, Wisconsin 53711. Udawatta, R.P., P.O. Nygren, and H.E. Garrett. 2002. Growth of three oak species during establishment in an agroforestry practice for watershed protection. In Sharrow, S. H. (ed.) Agroforestry and Riparian buffers for Land Productivity and Environmental Stability. The 8th North American Agroforestry Conference Proceedings, June 23-25, 2003, Dept. Rangeland Resources, Oregon State University, Corvallis, OR, USA. Udawatta, R.P., J.J. Krstansky, G.S. Henderson, and H.E. Garrett. 2001. Agroforestry effects on NPS pollution control. Agronomy Abstracts 2001, Annual Meetings. Charlotte, NC. Oct. 21 - 26, 2001. American society of Agronomy, 677, South Segoe Road, Madison, Wisconsin 53711. pp 345. Udawatta, R.P., G.S. Henderson, R.D. Hammer, and J.R. Jones.1999. Riparian forested buffers and grass filter strips effectively reduce sediment, nutrient loss, and runoff from non point source agricultural watersheds. Agronomy Abstracts 1997, Annual Meetings. Salt Lake City, Utah. Oct. 31 - Nov. 4, 1999. American society of Agronomy, 677, South Segoe Road, Madison, Wisconsin 53711. pp 335. Udawatta, R.P., R.D. Hammer, G.S. Henderson, J.R. Jones. 1997. Variable source area management to improve water quality. Agronomy Abstracts 1997, Annual Meetings. Anaheim, California, Oct. 26-31,1997. American society of Agronomy, 677, South Segoe Road, Madison, Wisconsin 53711. pp 313. Udawatta, R.P., R.D. Hammer, G.S. Henderson, J.J. Krstansky, and R. Jenson. 1996. Spatial and temporal variation of oak foliage nutrients in southeast Missouri. Agronomy Abstracts 1996, Annual Meetings. Indianapolis, Indiana, Nov. 3-8, 1996. American society of Agronomy, 677, South Segoe Road, Madison, Wisconsin 53711. pp 298. Hammer, R.D., R.P. Udawatta, and D. Meinert. 1996. The soil resource: its relevance to the long term objectives of the Missouri Ozark Forest Ecosystem Project. Missouri Forest, Fish, and Wildlife Conference, Jan. 31 - Feb. 2, 1996. Udawatta, R.P., and R.D. Hammer. 1995. Variation in soil organic
carbon due to surface shape and topography in forested watersheds. Agronomy
Abstracts 1995, Annual Meetings. St. Louis, Missouri, Oct. 29 - Nov. 3, 1995.
American society of Agronomy, 677, South Segoe Road, Madison, Wisconsin 53711.
pp 307. Extension Outreach Publications and Presentations: Ranjith Udawatta and Harold Garrett. 2008. Subsurface nutrient loss from a corn-soybean watershed with agroforestry and grass buffers. In 2008 Novelty Field Day Report. Outreach and Extension, Univ. of Missouri-Columbia, Missouri and Lincoln University, Jefferson City, Missouri. Michael Gold and Ranjith Udawatta. 2007. Conservation buffers and pollution reduction. Water Quality Short Course. Boone County Extension Office, Columbia, MO. April 10-12, 2007. Ranjith P. Udawatta, Neil I. Fox, Peter P. Motavalli, and Kelly A. Nelson. 2007. Agroforestry and grass buffer influences on microclimate. In 2007 Novelty Field Day Report. Outreach and Extension, Univ. of Missouri-Columbia, Missouri and Lincoln University, Jefferson City, Missouri. Ranjith P. Udawatta, Robert J. Kremer, Harold E. Garrett, and Stephen H. Anderson. 2007. Soil aggregate stability and enzyme activity in agroforestry and row-cropping system. In 2007 Novelty Field Day Report. Outreach and Extension, Univ. of Missouri-Columbia, Missouri and Lincoln University, Jefferson City, Missouri Ranjith Udawatta, Stephen Anderson, Clark Gantzer, and Allen Thompson. 2006. Streambank stabilization. MALMRI Directors Meeting August 4, 2006, MDNR Building, Jefferson City. Ranjith P. Udawatta, Stephen H. Anderson, and Harold E. Garrett. 2006. Soil pore characteristics, hydraulic conductivity and soil bulk density as influenced by agroforestry and grass buffer conservation practices. In 2006 Novelty Field Day Report. Outreach and Extension, Univ. of Missouri-Columbia, Missouri and Lincoln University, Jefferson City, Missouri. Ranjith P. Udawatta. 2006. Agroforestry and grass buffer influences on water quality and soil water. Soil, Environmental and Atmospheric Sciences Departmental Seminar, Winter Semester 2006. Ranjith P. Udawatta, Stephen H. Anderson, and Harold E. Garrett. 2005. Influence of agroforestry buffers on root length density and soil water content. In 2005 Novelty Field Day Report. Outreach and Extension, Univ. of Missouri-Columbia, Missouri and Lincoln University, Jefferson City, Missouri. Ranjith P. Udawatta, Harold E. Garrett, and Pekka O. Nygren. 2004. Root distribution in an agroforestry alley cropping practice. In 2004 Novelty Field Day Report. Outreach and Extension, Univ. of Missouri-Columbia, Missouri and Lincoln University, Jefferson City, Missouri. Ranjith P. Udawatta, Stephen H. Anderson, Tshepiso Seobi, and Harold E. Garrett. 2004. Influence of agroforestry buffer strips on soil water. In 2004 Novelty Field Day Report. Outreach and Extension, Univ. of Missouri-Columbia, Missouri and Lincoln University, Jefferson City, Missouri. Garrett, “Gene” and Ranjith Udawatta. 2003. Agroforestry benefits environment and land owners. In 2003 Novelty Field Day Report. Outreach and Extension, Univ. of Missouri-Columbia, Missouri and Lincoln University, Jefferson City, Missouri. Garrett, “Gene” and Ranjith Udawatta. 2002. Agroforestry practices reduce runoff and nutrient loss: A paired watershed comparison. In 2002 Novelty Field Day Report. Outreach and Extension, Univ. of Missouri-Columbia, Missouri and Lincoln University, Jefferson City, Missouri. Henderson, G.S., J.R. Jones, R.D. Hammer, R.P. Udawatta, and S.J. Schmitt. 2001. Improving water quality through application of high resolution remote sensing, GPS and modeling in the design of best management plans. School of Natural Resources, University of Missouri, Columbia, MO65211. Ranjith Udawatta, Gray Henderson, David Hammer, Jack Jones.
1998. Riparian corridor condition and hydrologically sensitive area management
to improve water quality. In Riparian Review. Missouri Department of Conservation,
Fish and Wildlife Research Center, 1110 S. College Avenue, Columbia, MO 65201.
Corinne Valdivia is an Associate Professor in Agricultural Economics (Division of Applied Social Sciences, CAFNR) and works with the Center for Agroforestry on the economic and human factors that play a role in the adoption of agroforestry practices. She also works to understand the objectives of rural households, their multiple objectives, and the competing economic, environmental and social motivations in their land stewardship decisions. She collaborates with the cluster on social economic and marketing group at the Center for Agroforestry. Publications Valdivia, C., and C. Poulos. 2008. "Factors Affecting Farm Operators' Interest in Incorporating Riparian Buffers and Forest Farming Practices in Northeast and Southeast Missouri." Agroforestry Systems. Available on-line. Arbuckle, J.G. Jr., C. Valdivia, A. Raedeke, J. Green, and J.S. Rikoon. Forthcoming. 2008. "Non-Operator Landowner Interest in Agroforestry Practices in Two Missouri Watersheds." Agroforestry Systems. Available on-line. Valdivia, C. 2007. The Effect of Land Fragmentation on Habitus, Field, and Agroforestry in the Midwest, USA. In Olivier, A. and S. Campeau (eds) When Tree and Crops Get Together: Economic Opportunities and Environmental Benefits from Agroforestry. The 10th North American Agroforestry Conference. June 10-13. pp 621-633. Qubec City, Canada. Fregene, E., and C. Valdivia. 2007. Policy and Program incentives for the adoption of agroforestry in Missouri. In Olivier, A. and S. Campeau (eds) When Tree and Crops Get Together: Economic Opportunities and Environmental Benefits from Agroforestry. The 10th North American Agroforestry Conference. June 10-13. pp 583-592. Qubec City, Canada. Valdivia, C., and C. Poulos. 2005. "Factors Affecting Farm Operators' Interest in Incorporating Riparian Buffers and Forest Farming Practices in Northeast and Southeast Missouri." Proceedings of the Ninth North American Agroforestry Conference 2005. Rochester, Minnesota. June 12-15. Flower, T., C. Valdivia, and H. Dorr. 2005. "Habitus and Interest in Agroforestry Practices in Missouri. Selected Paper. American Agricultural Economics. Providence, Rhode Island. July 24-27. Published Electronically at AgEcon Search http://agecon.lib.umn.edu/cgi-bin/pdf_view.pl?paperid=16298&ftype=.pdf Valdivia. C. 2004. The Socio-Economics-Marketing Cluster. Agroforestry Annual Review. Nov. 19. Memorial Union. Columbia, MO. Valdivia, C., and S. Konduru. 2004. Interest in Agroforestry Practices, Farmer Diversification Strategies and Government Transfers in Missouri's Northeast and Southeast. In Proceedings AFTA 2003. The Eighth North American Agroforestry Conference. Agroforestry and Riparian Buffers for Land Productivity and Environmental Stability. S.H. Sharrow, ed. June 23-25, Corvallis, OR. p. 281-296. Raedeke, A., J.J. Green, S.S. Hodge, and C. Valdivia. 2003. "Farmers, the Practice of Farming and the Future of Agroforestry: An Application of Bourdieu's Concepts of Field and Habitus." Rural Sociology. 68 (1):64-86. Valdivia, C., S. Konduru, A. Raedeke, and J. Green. 2003. Landowner Characteristics and Perceptions. The Economic and Social Value of Agroforestry to Rural Development Projects. AEWP 2003-9. Department of Agricultural Economics, University of Missouri. Columbia, MO. AEWPs are available at http://www.ssu.missouri.edu/agecon/workingpapers/aewp2003-9.pdf Valdivia, C. 2003. "The Economic and Social Value of Flood Plain Agroforestry to Rural Development." 5th Annual UMCA Program Review. Nov 20-21. Pp. 95-99. University of Missouri Center for Agroforestry. Columbia MO. Valdivia, C., S. Hodge, and A. Raedeke. 2002. "Rural Livelihoods and Agroforestry Practices in the Missouri Flood Plains." International Farming Systems Association. Small Farms in an Ever Changing World: Meeting the challenges of sustainable livelihoods and food security in diverse rural communities. Nov 17-20. Lake Buena Vista, Florida. Valdivia, C., S. Hodge, and A. Raedeke. 2001. "Rural livelihoods, production systems and farmers' perceptions: Potential agroforestry practices as alternatives in Missouri." Presented at "R&D Policies and Impact Assessment." Organized by NC-208. March 30-31, University of California Berkeley. Berkeley, CA. 15pp. Valdivia, C., A. Raedeke, S. Hodge, J. Green, and L. Godsey. "The Economic and Social Value of Floodplain Agroforestry to Rural Development," Department of Agricultural Economics Working Paper No. AEWP 2000-4. Columbia MO http://www.ssu.missouri.edu/agecon/workingpapers/aewp2000-4.pdf Related graduate student research E. Fregene. 2007. "Policies and Program Incentives and the Adoption of Agroforesty In Missouri." Unpublished MS Thesis. Department of Agricultural Economics. University of Missouri Columbia. December. H. Dorr. 2006. "Non-Operator and Farm Operator Landowner Interest in Agroforestry in Missouri." Unpublished MS Thesis. Department of Agricultural Economics. University of Missouri Columbia. August. T. Flower. 2004. "Characteristics of Farm Operator Attitudes and Interest in Agroforestry in Missouri." Unpublished MS Thesis. Department of Agricultural Economics. University of Missouri Columbia. December.
Research In three of every five years, low temperatures eliminate or reduce fruit crops in Missouri. In response to this, Dr. Warmund conducts research on low temperature stress of horticultural crops. Her research program on apple and peach rootstocks serves the Missouri fruit industry. Dr. Warmund's rootstock research focuses on evaluation of pome and stone fruit rootstock field performance and improvement of rootstock propagation techniques. She also works on nursery production problems affecting the release of new plant material. As State Fruit Extension Specialist she works with commercial fruit producers focused on developing and providing educational materials for fruit and nut growers to increase production efficiency and thereby increase profitability. She also is involved in establishing and maintaining demonstration research plots to illustrate innovations in the fruit and nut industry. Dr. Warmund is contributing her pomological expertise as a collaborator on the UMCA chestnut and black walnut research program. Currently, her chestnut research projects include the development of primary and secondary burs and cultural practices to manage crop load, use of dwarfing rootstocks and interstems for high-density production, and graft incompatibility in Chinese chestnut. Black walnut studies focus on dwarfing rootstocks, the chilling requirements for flowering, sensory attributes of various cultivars, the seasonal development of the kernel, and the characterization of kernel necrosis and shriveling. Recent Publications Warmund, M.R. 2008. Kernels color of three black walnut cultivars after delayed hulling at five successive harvest dates. HortScience (in press). Warmund, M.R., J. Elmore, M.A. Drake, and M.D. Yates. 2008. Descriptive analysis of kernels of selected black and Persian walnut cultivars. J. Sci. Food Agric (in press). Brawner, S.A., and M.R. Warmund. 2008. Husk softening and kernel characteristics of three black walnut cultivars at successive harvest dates. HortScience 43:691-695. Warmund, M.R., P. Guinan, and G. Fernandez. 2008. Temperatures and cold damage to small fruit crops across the eastern U.S. associated with the April 2007 freeze. HortScience 43 (6): 1-5. Takeda F., K. Demchak, M.R. Warmund, D.T. Handley, R. Grube, and C. Feldhake. 2008. Row cover improves winter survival and production of western trailing Siskiyou blackberry in the eastern United States. HortTechnology 18(4) (in press). Warmund, M.R., and J. Krumme. 2008. An evaluation of chilling models for estimating rest completion of erect blackberries. Acta Hort 777:275-281. Warmund, M.R., C. Starbuck, and S. Kadir. 2007. Changes in fruit quality parameters of Jonathan Rasa and Delicious Flanagan apple in response to elevated temperatures. Trans Kansas Acad Sci 110 (3/4):1-9. Autio, W.R., T.L. Robinson, B.H. Barritt, J.A. Cline, R.M. Crassweller, C.G. Embree, D.C. Ferree, M.E. Garcia, G.M. Greene, E.E. Hoover, R.S. Johnson, K. Kosola, J. Masabni, M.L. Parker, R.L. Perry, G.L. Reighard, S.D. Seeley, and M. Warmund. 2007. Early performance of Fuji and McIntosh apple trees on several dwarf rootstocks in the 1999 NC-140 Rootstock Trial. Acta Hort 732:119-125. Autio, W.R., T.L. Robinson, B.H. Barritt, J.A. Cline, R.M. Crassweller, C.G. Embree, D.C. Ferree, M.E. Garcia, G.M. Greene, E.E. Hoover, R.S. Johnson, K. Kosola, J. Masabni, M.L. Parker, R.L. Perry, G.L. Reighard, S.D. Seeley, and M. Warmund. 2007. Early performance of Fuji and McIntosh apple trees on several semidwarf rootstocks in the 1999 NC-140 Rootstock Trial. Acta Hort 732:127-133. Robinson, T., L. Anderson, W. Autio, B. Barritt, J. Cline, R. Crassweller, W. Cowgill, C. Embree, D. Ferree, E. Garcia, G. Greene, C. Hampson, K. Kosola, M. Parker, R. Perry, T. Roper, and M. Warmund. 2007. A multilocation comparison of Geneva 16, Geneva 41, and M.9 apple rootstocks across North America. Acta Hort 732:59-65. Reighard, G., R. Andersen, J. Anderson, W. Autio, T. Beckman, T. Baker, R. Belding, G. Brown, P. Byers, W. Cowgill, D. Deyton, E. Durner, A. Erb, D. Ferree, A. Gaus, R. Godin, R. Hayden, S. Hirst, M. Kadir, H. Kaps, T. Larsen, N. Lindstrom, F. Miles, S. Morrison, D. Myers, P. Ouelette, C. Rom, W. Shane, B. Taylor, K. Taylor, C. Walsh, and M. Warmund. 2007. Growth and yield of Redhaven peach on nineteen rootstocks at twenty North American locations. Acta Hort 732:271- 278. Warmund, M.R., and M.V. Coggeshall. 2006. Determination of black walnut (Juglans nigra L.) harvest date with durometer measurements. Acta Hort 705:529-531. Warmund, M.R., K.L. Hunt, and M.A. Gold. 2005. Removal of secondary burs increases average nut weight from primary burs of Armstrong, Orrin and Willamette Chinese chestnuts. Acta Hort 693:149-151. Hunt, K.L., M.A. Gold, and M.R. Warmund. 2005. Chinese chestnut cultivar performance in Missouri. Acta Hort 693:145-147. Autio, W., T. Robinson, B. Barritt, J. Cline, R. Crassweller, C. Embree, D. Ferree, M. Garcia, G. Greene, E. Hoover, R. Hohnson, K. Kosola, J. Masabni, M. Parker, R. Perry, G. Reighard, S. Seeley, and M. Warmund. 2005. Performance of Fuji and McIntosh apple trees after five years as affected by several semidwarf rootstocks in the 1999 NC-140 rootstock trial. J Amer Pom Soc 59:192-201. Autio, W., T. Robinson, B. Barritt, J. Cline, R. Crassweller, C. Embree, D. Ferree, M. Garcia, G. Greene, E. Hoover, R. Hohnson, K. Kosola, J. Masabni, M. Parker, R. Perry, G. Reighard, S. Seeley, and M. Warmund. 2005. Performance of Fuji and McIntosh apple trees after five years as affected by several dwarf rootstocks in the 1999 NC-140 rootstock trial. J Amer Pom Soc 59:202-214. Warmund, M.R., and J. Krumme. 2005. A chilling model to estimate rest completion of erect blackberries. HortScience 40 (5):1259-1262. Rheighard, G.R., R. Andersen, J. Anderson, W. Autio, T. Beckman, T. Baker, R. Belding, G. Brown, P. Byers, W. Cowgill, D. Deyton, E. Durner, A. Erb, D. Ferree, A. Gaus, R. Godin, R. Hayden, P. Hirst, S. Kadir, M. Kaps, H. Larsen, T. Lindstrom, N. Miles, F. Morrison, S. Myers, D. Ouellette, C. Rom, W. Shane, B. Taylor, K. Taylor, C. Walsh, and M. Warmund. 2004. Eight-year performance of 19 peach rootstocks at 20 locations in North America. J Amer Pom Soc 58:174-202. Recent Publications (Non-referred) Warmund, M.R. 2008. Black walnut harvest: Kernel size versus color. Northern Nut Growers 99th Ann. Rpt. (in press). Warmund, M.R. 2008. Primary and secondary flowering and fruiting of Chinese chestnut trees. Northern Nut Growers 99th Ann. Rpt. (in press). Warmund, M.R., and M.V. Coggeshall. 2008. Flowering and fruit characteristics of back walnuts: A tool for identifying and selecting cultivars. http://extension.missouri.edu/explore/miscpubs/xm1001.htm Warmund, M. 2007. Fertilizer applications affect foliar nitrogen Chinese chestnut growth and yield. Northern Nut Growers 98th Ann. Rpt. (in press). Warmund, M.R., and M.V. Coggeshall. 2007. Rest completion in eastern black walnut cultivars. University of Missouri Center for Agroforestry Ann. Rprt.
Research interests include developing and evaluating a conservation buffer planning methodology for agroforestry systems. Projects include creating tools for designing and managing multi-purpose buffers for economic, ecological, and social objectives.
Research activities focus on silvicultural practices for eastern black walnuts, best management practices and economic analyses for silvopasture practices, functionality of wooded riparian buffers, management practices for production of specialty crops including shiittakes and beef cattle production. Other activities include research program and administrative support for the specific cooperative agreements between ARS and Center for Agroforestry. Publications: Brauer, D., T. Kimmons, and M. Phillips. 2007. Comparison of two methods for the quantitation of beta-glucans from shiitake mushrooms. J. Herbs, Spices and Medicinal Plants. A. Ares, W.C. Reid and D. Brauer. 2006. Production and economics of native pecan silvopastures in central United States. Agroforestry Systems: 66: 205-215. 2006. Brauer, D., A. Ares, W. Reid, A. Thomas and J.P. Slusher. 2006. Nut-yield variations and yield-DBH relationships in open-canopy black walnuts in southern USA. Agroforestry Systems 67:63-72. A.Ares and D. Brauer. 2005. Aboveground biomass partitioning in loblolly pine silvopastoral stands: spatial configuration and pruning effects. Forest Ecology and Management 219:176-184. A. Ares, D. K. Brauer and D. M. Burner. 2005. Growth of southern pines at different stand configurations in silvopastoral practices. Proceedings of 9th North American Agroforestry Conference. Published 6/12/2005; [http;//cinram.umn.edu/afta200 5/pdf/Ares.PDF]. Ares, A. and Brauer, D. 2004. Growth and nut production of black walnut in relation to site, genotype and stand management in south-central United States. Agroforestry Systems 63:83-90. Brauer, D., D. Burner and M. Looper. 2004. Effects of tree configuration on the understory productivity of a loblolly pine-forage agroforestry practice. American Grassland and Forage Proceedings. American Forage Grassland Council Proceedings 13: 412-416. Brauer, D., T. Horton, and D. Burner. 2004. Effects of under-story management and forage species on soil moisture in a pecan alley cropping practice. Annual Report for the Northern Nut Growers Association 95: 27-37. Garrett, H.E., Kerley, M.S., K.P. Ladyman, W.D. Walter, L.D. Godsey, J.W. Van Sambeek and D.K. Brauer. 2004. Hardwood Silvopasture management in North America. Agroforestry Systems 61: 21-33. Ares, A., St. Louis, D. and Brauer, D. 2003. Trends in tree growth and understory yield in silvopastoral practices with southern pines puts to farm-level agroforestry models. Agroforestry Systems 59:27-33. Burner, D.M. and Brauer, D. 2003. Herbage response to spacing of loblolly pines in a minimal management silvopasture in southeastern USA. Agroforestry Systems 57:69-77. Kimmons, T.E., Phillips, M. and Brauer, D. 2003. Small farms scale of aerobic compost from hardwoods predigested by Lentinula edodes. Journal of Sustainable Agriculture 23: 109-124. Aiken, G. and Brauer, D. K. 2002. Strategic supplementation with corn for steers grazing bermudagrass. American Forage Grassland Council Proceedings 11: 300-303. (Proceedings) Ares, A., Reid, W. and D.K. Brauer. 2002. Production and economics of silvopastoral systems with native pecans. Proceeding Society of American Foresters. 2002 National Convention: pp.341-343. Brauer, D. 2002. Botanical composition and soil characteristics of grasslands in the central Appalachian region. Journal of Sustainable Agriculture 20:69-79. Brauer, D., Brown, M.A. and Jackson, W. 2002. Comparing Senepol cows to other dam breeds for calf production on tall fescue. American Forage Grassland Council Proceedings 11: 281-285. (Proceedings) Brauer, D. and J Jones. 2002. Results on the establishment of named varieties of eastern black walnuts on an upland site in the Ouachita region of Arkansas. Northern Nut Growers Ass. Annual Report 94: 133-145. Brauer, D., Kimmons, T. and Phillips, M. 2002. Effects of management on the yield and high molecular weight polysaccharide content of shiitake (Lentinula edodoes) mushrooms. Journal of Agricultural and Food Chemistry 50:5333-5337. Brauer, D., Ritchey, D. and Belesky, D. 2002. Effect of liming and Ca on root development and nodulation of clovers. Crop Science 42:1640-1646. Brauer, D. 2000. Rapid inhibition of root growth in wheat is associated with Al uptake as followed by changes in morin fluorscence. Journal of Plant Nutrition 24:1243-1253. Brauer, D., Yermiyahu, U., Rytwo, G., and Kinraide, T. B. 2000. Characteristics of the Quenching of 9-aminoacridine by liposomes made from plant lipids. Journal of Membrane Biology 178: 43-48. Brauer, D., Blanche, C., Feldhake, C., and Schumann, C. 1999. Evaluating forestry product quality: Agroforestry systems to produce alternative complimentray crops. Agricultural Marketing Outreach Workshop Training Manual, pp. 49-53. Southern University, Baton Rouge, LA. Available at http://mark etingoutreach.usda.gov/info/99Manual/99manual.html. Malinowski, D. P., Brauer, D. K. and Belesky, D. P. 1999. The
endophyte Neotyphodium coenophialum affects root morphology of tall fescue grown
under phosphorus deficiency. Journal of Agronomy and Crop Science 183:53-60.
Related Publications: Burner, D.M., and Mackown, C.T. 2006. Nitrogen effects on
herbage nitrogen use and nutritive value in a meadow and loblolly pine alley.
Crop Science. 46:1149-1155.
Burner, D.M., Pote, D.H., and Ares, A. 2006. Foliar and shoot allometry of
pollarded black locust, robinia pseudoacacia l.. Agroforestry Systems. 68:37-42.
Burner, D.M., and Mackown, C.T. 2005. Herbage nitrogen recovery in a meadow
and loblolly pine alley. Crop Science. 45:1817-1825.
Burner, D.M., Pote, D.H., and Ares, A. 2005. Management effects on biomass
and foliar nutritive value of Robinia pseudoacacia and Gleditsia triacanthos
f. intermis in Arkansas, USA. Agroforestry Systems. 65:207-214.
Burner, D.M., and Belesky, D.P. 2004. Diurnal effects on nutritive value of
alley cropped orchardgrass herbage. Crop Science. 44:1776-1780.
Pan, Y., Burner, D.M., Legendre, B.L., Grisham, M.P., and White, W.H. 2004.
An Assessment of the Genetic Diversity Within a Collection of Saccharum spontaneum
with RAPD-PCR. Genetic Resources and Crop Evolution. 51:895-903.
Pan, Y-B., Burner, D.M., Wei, Q., Cordeiro, G.M., Legendre, B.L., and Henry,
R.J. 2004. New Saccharum hybrids in S. spontaneum cytoplasm developed through
a combination of conventional and molecular breeding approaches. Plant Genetic
Resources: Characterization and Utilization. 2(2):131-139.
Burner, D.M. 2003. Influence of Alley Crop Environment on Orchardgrass and
Tall Fescue Herbage. Agronomy Journal. 95:1163-1171.
Burner, D.M., Campbell, L., and Meier, S. 2003. The Christmas Tree Plantation
- A Silvopasture Opportunity. The Temperate Agroforester. 11(3):6-7, 11.
Schilling, J., and Burner, D.M. 2003. A Remote-operated Rig for Christmas
Tree Shearing. Resource Magazine. 10(12):9-10. Proceedings / Symposium: Brauer, D.K., Horton, T.Y., and Burner, D.M. 2006. Effects
of under-story management and forage species on soil moisture in a pecan alley
cropping practice. Northern Nut Growers Annual Report. 95:27-37.
Burner, D.M. 2006. Loblolly pine-based forage production: What we're learning
in Arkansas. Southern Pasture and Forage Crop Improvement Conference Proceedings.
p. 13-19.
Burner, D.M., Pote, D.H., and Ares, A. 2006. Allemotry and biomass of pollarded
black locust. Proceedings of the Biennial Southern Silvicultural Research Conference,
February 28-March 4, 2005, Memphis, Tennessee. p. 569.
Ares, A., Brauer, and D.K., Burner, D.M. 2005. Growth of southern pines at
different stand configurations in silvopastoral practices. North American Agroforestry
Conference. Center for Integrated Natural Resources and Agricultural Management,
St. Paul, Minnesota. 2005 CDROM.
Burner, D.M., Pote, D.H., and Ares, A. 2005. Potential of Gleditsia triacanthos
f. inermis and Robinia pseudoacacia for livestock browse: biomass and foliar
nutritive value. In: Multipurpose Trees in the Tropics: Management & Improvement
Strategies. Arid Forest Research Institute, Jodhpur, India. Proceedings. pp.
399-406.
Tew, T.L., Burner, D.M., Legendre, B.L., White, W.H., Grisham, M.P., Dufrene
Jr, E.O., Garrison, D.D., Veremis, J.C., Pan, Y.-B., and Richard Jr, E.P. 2005.
Registration of "Ho 95-988" Sugarcane. Crop Science. 45:1660.
Belesky, D.P., and Burner, D.M. 2004. Germination and seedling development
of a tall fescue cultivar in response to native and novel endophyte. Proc. 5th
International Symposium on Neotyphodium/Grass Interactions. R. Kallenbach, et
al., (eds). III-305: Fayetteville, AR.
Belesky, D.P., Burner, D.M., and Ruckle, J.M. 2004. Herbage mass and allocation
of a tall fescue cultivar as a function of native or non-toxic endophyte. American
Forage and Grassland Conference Proceedings. v. 13 p. 388-392.
Burner, D.M., and Burke, J.M. 2003. Agronomic and Grazing Potential of Tridens
flavus and Tridens tridens strictus. IN: American Forage and Grassland Council
Proceedings. 12:353-357. Abstracts: Burson, B.L., Burner, D.M., Jessup, R.W., and Renganayaki,
K. 2006. Genetic diversity of bahiagrass germplasm collected in northern Arkansas
[abstract]. Southern Branch American Society of Agronomy. p. 19.
Burner, D.M., and Mackown, C.T. 2005. Herbage nitrogen recovery in a meadow
and loblolly pine alley [abstract]. Agronomy Society of America, Crop Science
Society of America, Soil Science Society of America Meeting. Paper No. 2060.
Brauer, D.K., Burner, and D.M., Looper, M.L. 2004. Effects of tree configuration
on the understory productivity of a loblolly pine-forage agroforestry practice.
American Forage and Grassland Conference Proceedings. 13:412-416.
Burner, D.M., and Belesky, D.P. 2004. Diurnal Effects on Nutritive Value of
Alley Cropped Oorchardgrass Herbage. World Agroforestry Congress. Available:
http://conference.ifas.ufl.edu/wca/abstracts/BurnerD2.doc.
Burner, D.M., Pote, D.H., and Ares, A. 2004. Potential of Gleditsia triacanthos
f. inermis and Robinia pseudoacacia for livestock browse: foliar nutritive quality
and biomass estimation. Ninth North American Agroforestry Conference - 2005:
Moving Agroforestry into the Mainstream, Jodhpur India. International Conference:
Multipurpose Trees in the Tropics CD. Session 4. p. 3.
Pan, Y., Burner, D.M., Wei, Q., Cordeiro, G.M., Legendre, B.L., and Henry,
R.J. 2004. New saccharum hybrids in s. spontaneum cytoplasm selected with RAPD
and microsatellite markers [abstract]. Plant and Animal Genome Abstracts. P235:130.
Burner, D.M. 2003. Differential Performance of Two Shade Tolerant Grasses
in Pine Alleys. Association for Temperate Agroforestry Meeting. Available: http://www.missouri.edu/~afta/8thNAAC/poster_abstracts.htm.
Burner, D.M. 2003. Influence of Alley Crop Environment on Orchardgrass and
Tall Fescue Herbage. World Agroforestry Congress. 95:1163-1171.
Burner, D.M., and Ares, A. 2003. Ice Damage in a Chronosequence of Agroforestry
Pine Plantations in Arkansas. 12th Biennial Southern Silvicultural Research
Conference.
Burner, D.M., and Ares, A. 2003. Ice Damage in Agroforestry Pine Plantations
in Arkansas, USA: A Case Study of Three Chronosequences. Journal of Sustainable
Forestry. V. 17(3). P. 21-36.
Burner, D.M., and Aiken, G.E. 2001. Digestibility and Fiber Relationships
for Diverse Forage Grasses. Abstract of Agronomy Meetings. Abstr. Number C06-BURNER160857-0.
Research interests are in the silviculture of hardwoods in riparian ecosystems including afforestation of bottomlands and management of native forests. Emphasis is on developing natural and artificial regeneration systems for native hardwoods including oak, pecan, walnut, sycamore, silver maple, cottonwood and other bottomland species. Related Publications: Dey, D.C.; Kabrick, J.M.; Gold, M. 2006. The role of large
container seedlings in afforesting oaks in bottomlands. P. 218-223 In Connor,
K.F., ed. Proc. 13th Biennial southern silvicultural research conf. USDA Forest
Service Gen. Tech. Rep. SRS-92.
Guyette, R.P.; Stambaugh, M.C.; Lupo, A.; Muzika, R-M; Dey, D.C. 2006. Oak
growth in Midwestern North America linked with post glacial climate epochs in
the North Atlantic. PAGES News 14(2): 21-22.
He, H.S.; Dey, D.C.; Fan, X.; Hooten, M.B.; Kabrick, J.M.; Wikle, C.K.; Fan,
Z. 2006. Mapping pre-European settlement vegetation at fine resolutions using
a hierarchical Bayesian model and GIS. Plant Ecology.
Krekeler, N.; Kabrick, J.M.; Dey, D.C.; Wallendorf, M. 2006. Comparing natural
and artificial methods for establishing pin oak advance reproduction in bottomland
forests managed as greentree reservoirs. P. 224-228. In Connor, K.F.,
ed. Proc. 13th Biennial southern silvicultural research conf. USDA Forest Service
Gen. Tech. Rep. SRS-92.
Stambaugh, M.C.; Guyette, R.P.; McMurry, E.R.; Dey, D.C. 2006. Fire history
at the eastern Great Plains margin, Missouri River loess hills. Great Plains
Research 16(2): 149-159.
Dey, D.C.; Kabrick, J.M.; Gold, M.A. 2005. Evaluation of RPMTM
oak seedlings in afforesting floodplain crop fields along the Missouri River.
In: 9th workshop on seedling physiology and problems in oak plantings.
18-20 October 2004. West Lafayette, IN. USDA Forest Service, North Central Research
Station. General Technical Report NC-262: 3.
Kabrick, J.M.; Dey, D.C.; Van Sambeek, J.W.; Wallendorf, M.; Gold, M.A. 2005.
Soil properties and growth of swamp white oak and pin oak on bedded soils in
the lower Missouri River floodplain. Forest Ecology and Management 204: 315-327.
Krekeler, N.; Kabrick, J.M.; Dey, D.C.; Wallendorf, M. 2005. Underplanting
pin oak seedlings in bottomland forests managed as greentree reservoirs. In:
9th workshop on seedling physiology and problems in oak plantings.
18-20 October 2004. West Lafayette, IN. USDA Forest Service, North Central Research
Station. General Technical Report NC-262: 10.
Weigel, D.R.; Dey, D.C. 2005. Evaluation of Root ForceTM container
seedings of four oak species in southern Indiana: 2 year results. In: 9th workshop
on seedling physiology and problems in oak plantings. 18-20 October 2004. West
Lafayette, IN. USDA Forest Service, North Central Research Station. General
Technical Report NC-262: 22.
Dey, D.C.; Kabrick, J.M.; Gold, M.A. 2004. Tree establishment in floodplain
agroforestry practices. In Proceedings 8th North American Agroforestry
Conference. 22-25 June 2003. Corvallis, OR: Oregon State University: 102-115.
Dey, D.; Kabrick, J. 2004. Regenerating oaks in Missouri's bottomlands. Missouri
Conservationist 65(7): 18-22
Dey, D.C.; Lovelace, W.; Kabrick, J.M.; Gold, M.A. 2004. Production and early
field performance of RPM seedlings in Missouri floodplains. In: Michler, C.H.;
Pijut, P.M.; Van Sambeek, J.; Coggeshall, M.; Seifert, J.; Woeste, K.; Overton,
R., eds. Black walnut in a new century, proceedings of the 6th Walnut Council
research symposium; 2004 July 25-28; Lafayette, IN. Gen. Tech. Rep. NC-243.
St. Paul, MN: U.S. Department of Agriculture, Forest Service, North Central
Research Station: 59-65.
Dugger, S.; Dey, D.C.; Millspaugh, J.J. 2004. Vegetation cover effects mammal
herbivory on planted oaks and success of reforesting Missouri River bottomland
fields. In Connor, K.F., ed. Proceedings 12th Biennial Southern Silvicultural
Conference. 24-28 February 2003. Biloxi, MS. General Technical Report SRS-71.
Asheville, NC: U.S. Department of Agriculture, Forest Service Southern Research
Station. 3-6.
Grossman, B.C.; Gold, M.A.; Dey, D.C. 2003. Restoration of hard mast species
for wildlife in Missouri using precocious flowering oak in the Missouri River
floodplain, USA. Agroforestry Systems 59: 3-10
Guyette, R.P.; Stambaugh, M.C.; Dey, D.C. 2004. Ancient oak climate proxies
from the agricultural heartland. EOS, Transactions, American Geophysical Union.
85(46): 483.
Dey, D.C.; Guyette, R.; Stambaugh, M. 2003. Ancient wood uncovered. Missouri
Conservationist 64(1): 4-7
Dey, D.C.; Kabrick, J.; Grabner, J.; Gold, M. 2003. Restoring oaks in the
Missouri River floodplain. P. 8-20 In Proceedings 29th Annual
Hardwood Symp. Hardwood silviculture and sustainability: 2001 and beyond. May
17-19, 2001. French Lick, IN. National Hardwood Lumber Association. Memphis,
TN.
Dey, D.C.; Kabrick, J.M.; Gold, M.A. 2003. Establishing oaks in Big River
floodplains. Missouri Society of American Foresters. Missouri Forestry Newsletter
19(1): 3-5.
Guyette, R.P.; Stambaugh, M.C.; Dey, D.C. 2003. Fire history in the riparian
corridor of the Ozark National Scenic Riverways. A report for the National Park
Service, Ozark National Scenic Riverways, Van Buren, MO. 24 p. with illus.
Grossman, B.C.; Gold, M.A.; Dey, D.C. 2003. Effect of acorn mass and size,
and early shoot growth on one-year old container-grown RPMTM oak
seedlings. In J.W. Van Sambeek, J.O. Dawson, F. Ponder Jr., E.F. Loewenstein,
J.S. Fralish, eds. Proceedings 13th Central Hardwood Forest Conference;
2002 April 1-3; Urbana, IL. General Technical Report NC-234. St.
Paul, MN: U.S. Department of Agriculture, Forest Service, North Central Research
Station: 405-414. (Refereed).
Shaw, G.W.; Dey, D.C.; Kabrick, J.; Grabner, J.; Muzika, R.M. 2003. Comparison
of site preparation methods and stock types for artificial regeneration of oaks
in bottomlands. In J.W. Van Sambeek, J.O. Dawson, F. Ponder Jr., E.F.
Loewenstein, J.S. Fralish, eds. Proceedings 13th Central Hardwood Forest Conference;
2002 April 1-3; Urbana, IL. General Technical Report NC-234. St. Paul, MN: U.S.
Department of Agriculture, Forest Service, North Central Research Station: 186-198.
Guyette, R.P.; Cole, W.G.; Dey, D.C.; Muzika, R.M. 2002. Perspectives on the
age and distribution of large wood in riparian carbon pools. Canadian Journal
of Fisheries and Aquatic Sciences 59: 578-585
Krekeler, N.; Dey, D.; Kabrick, J. 2002. Regeneration and recruitment of pin
oak in existing bottomland forests. P. 57 In Gaylord Memorial Laboratory
Annual Review 2002. University of Missouri, Agricultural Experiment Station,
The School of Natural Resources, Department of Fisheries and Wildlife Science.
Columbia, MO.
Grossman, B.C.; Gold, M.A.; Dey, D.C. 2001. Restoration of hard mast species
for wildlife in Missouri floodplains: Precocious flowering in Quercus.
P. 233-242 In W. Schroeder, J.
Kort, eds. Proceedings 7th Biennial Conf. on Agroforestry in North
America. Aug. 12-15, 2001. Regina, Saskatchewan.
Guyette, R.; Dey, D.C. 2001. Ancient wood uncovered. Missouri Society of American
Foresters, Missouri Forestry Newsletter 17(2): 3-4.
Kabrick, J.; Dey, D. 2001. Silvics of Missouri bottomland tree species. Notes
for Forest Managers Report #5. Missouri Department of Conservation. Jefferson
City, MO. 8 p.
Conducts research on tree-based buffer systems to mitigate agricultural nonpoint source pollution. Develops tools for assisting managers with placement and design of buffers for effective pollution control and optimization with other ecological and production functions.
Kabrick, J.M., D.C. Dey, and J.R. Motsinger. 2007. Evaluating the flood tolerance of bottomland hardwood artificial reproduction. In: Clatterbuck, W. and D. Buckley (eds.) Proceedings of the 15th Central Hardwood Forest Conference. Gen. Tech. Rep. SRS-101. Van Sambeek, J.W., R.L. McGraw, J.M. Kabrick, M.V. Coggeshall, I.M. Unger, and D.C. Dey. 2007. Developing a field facility for evaluating flood tolerance of hardwood seedlings and understory ground covers. In: Clatterbuck, W. and D. Buckley (eds.) Proceedings of the 15th Central Hardwood Forest Conference. Gen. Tech. Rep. SRS-101. Kabrick, J.M., D.C. Dey, J.W. Van Sambeek, and M.A. Gold. 2005. Soil properties and growth of swamp white oak and pin oak on bedded soils in the lower Missouri River floodplain. Forest Ecology and Management. 204:315-327. Dey, D.C., W. Lovelace, J.M. Kabrick, and M.A. Gold. 2004. Production and early field performance of RPMr seedlings in Missouri Floodplains. pp. 59-65. In: Michler, C.H. and others, eds. Proceedings of the Sixth Walnut Council Research Symposium on Black Walnut in a New Century; 2004 July 25-28; Lafayette, IN. Gen. Tech. Rep. NC-243. St. Paul, MN: U.S. Department of Agriculture, Forest Service. North Central Research Station. Dey, D., and J. Kabrick. 2004. Regenerating oaks in Missouri's bottomland forests. Missouri Conservationist. 65(7):19-22. Shaw, G.W., D.C. Dey, J. Kabrick, J. Grabner, and R.M. Muzika. 2003. Comparison of site preparation methods and stock types for artificial regeneration of oaks in bottomlands. pp. 186-198. In: Van Sambeek, J.W., J.O. Dawson, F. Ponder, Jr., E.F. Loewenstein, and J.S. Fralish, eds. Proceedings of the 13th Central Hardwood Forest Conference 1-3 April 2002. Urbana-Champaign, IL. General Technical Report NC 234. U.S. Department of Agriculture, Forest Service, North Central Research Station. 565 p. Dey, D.C., J.M. Kabrick, M.A. Gold. 2003. Tree establishment in floodplain agroforestry practices. pp. 102-115 In: Sharrow, S.H. (ed.) Proceedings 8th North American Agroforestry Conference. 23-25 June 2003. Oregon State University. Corvallis, OR.
Professional interests include riparian ecology, management and restoration, especially in agricultural landscapes, hydrology and soils, agroforestry. Research emphasis focuses on the design and function of riparian management systems that reduce the movement and remediate the impact of non-point source pollutants from croplands and pastures to adjacent streams. Presently we are also studying the impact of riparian buffers on stream bank stability and quantifying the proportion of stream sediment that originates from bank erosion and surface erosion. Most of our buffer designs use perennial woody and forb species that are functionally effective and provide potential alternative income to land owners. An area of study includes quantifying the biomass production potential of buffers for carbon sequestration and use in the burgeoning bio-energy field. Please visit our web site at: http://www.buffer.forestry.iastate.edu/. Publications Herring, J., R.C. Schultz and T.M. Isenhart. 2006. Watershed-scale inventory of existing riparian buffers in northeast Missouri using GIS. Journal of American Water Resources Association 42:145-155. Zaimes, G.N., R.C. Schultz and T.M. Isenhart. 2006. Riparian land-uses and precipitation influences on stream bank erosion in central Iowa. Journal of American Water Resources Association 42:83-97. Abdelkadir, A. and R.C. Schultz. 2005. Water harvesting in a 'runoff-catchment' agroforestry system in the dry lands of Ethiopia. Agroforestry Systems 63:291-298 Schultz, R.C., T.M. Isenhart, W.W. Simpkins, and J.P. Colletti. 2004. Riparian forest buffers in agroecosystems - lessons learned from the Bear Creek Watershed, central Iowa, USA. Agroforestry Systems 61:35-50. Marquez, C.O., V.J. Garcia, C.A. Cambardella, R.C. Schultz, and T.M. Isenhart. 2004. Aggregate-size stability distribution and soil stability. Soil Sci. Soc. Am. J. 68:725-735. Zaimes, G.N., R.C. Schultz, and T. M. Isenhart. 2004. Stream Bank Erosion Adjacent to Riparian Forest Buffers, Row-cropped Fields, and Continuously-grazed Pastures along Bear Creek in Central Iowa. Journal of Soil and Water Conservation 59:19-27. Tufekcioglu, A., J.W. Raich, T.M. Isenhart, and R.C. Schultz. 2003. Biomass, carbon and nitrogen dynamics of multi-species riparian buffer zones within an agricultural watershed in Iowa, USA. Agroforestry Systems 57:187-198. Simpkins W.W., T. R. Wineland, T. M. Isenhart, and R. C. Schultz. 2003. Hydrologic setting controls NO3--N removal in groundwater beneath multi-species riparian buffers. In: Kolpin, Dana and John D. Williams (Editors). Agricultural Hydrology and Water Quality. AWRA's 2003 Spring Specialty Conference Proceedings. American Water Resources Association, Middleburg, Virginia, TPS-03-1, CD-ROM. Tufekcioglu, A., J.W. Raich, T.M. Isenhart, and R.C. Schultz. 2003. Biomass, carbon and nitrogen dynamics of multi-species riparian buffer zones within an agricultural watershed in Iowa, USA. Agroforestry Systems 57:187-198. Lee, Kye-Han, Thomas M. Isenhart, and Richard C. Schultz. 2003 Sediment and nutrient removal in an established multi-species riparian buffer. Journal of Soil and Water Conservation 58: 1-8. Lee, Kye-Han, Thomas M. Isenhart, and Richard C. Schultz. 2002. Sediment and nutrient removal in an established multi-species riparian buffer. (Accepted) Journal of Soil and Water Conservation. Bharati, L. K-H Lee, T.M. Isenhart, and R. C. Schultz. 2002 Riparian zone soil-water infiltration under crops, pasture and established buffers. (Accepted) Agroforestry Systems. Lowrance, R., S. Dabney, R. Schultz. 2002. Improving water and soil quality with conservation buffers. J. Soil and Water Conservation 57:36A-43A. Simpkins, W.W., T. R. Wineland, R. J. Anders, D. A. Johnston, T. M. Isenhart, and R. C. Schultz 2002. Hydrogeological constraints on riparian buffers for reduction of diffuse pollution; Examples from the Bear Creek Watershed in Iowa. Journal of Water Science and Technology 45:61-68. Tufekcioglu, A., J.W. Raich, T.M. Isenhart and R.C. Schultz. 2001. Soil respiration within riparian buffers and adjacent crop fields. Plant and Soil 229:117-124. Schultz, R.C., J.P. Colletti, T.M. Isenhart, C.O. Marquez, W.W. Simpkins and C.J. Ball. 2000. Riparian forest buffer practices. Chapter 7 pp 189-282; in: Garrett, H.E., W.J. Rietveld and R.F. Fisher (eds.) North American Agroforestry: An integrated science and practices. American Society of Agronomy, Madison, WI. 402 pp. Lee, K. T.M. Isenhart, R.C. Schultz, and S.K. Mickelson. 2000 Multi-species riparian buffer system in Central Iowa for controlling sediment and nutrient losses during simulated rain. J. Environ. Qual. 29: 1200-1205. Lee, K., T.M. Isenhart, R.C. Schultz, and S.K. Mickelson. 1999. Sediment and nutrient trapping abilities of switchgrass and bromegrass buffer strips. Agroforestry Systems 44:121-132. Marquez, C.O., C.A. Cambardella, T.M. Isenhart, and R.C. Schultz. 1999. Assessing soil quality in a riparian buffer strip system by testing organic matter fractions. Agroforestry Systems 44: 133-140. Tufekcioglu, A., J. W. Raich, T.M. Isenhart, and R. C. Schultz. 1999. Fine root dynamics, coarse root biomass, root distribution and soil respiration in a multispecies riparian buffer in Central Iowa, USA. Agroforestry Systems 44:163-174. Isenhart, T.M., R.C. Schultz and J.P. Colletti. 1998. Watershed restoration and agricultural practices in the Midwest: Bear Creek of Iowa. Chapter 19, pp 318-334. In: Williams, J.E., C.A. Wood and M.P. Dombeck, Eds. Watershed Restoration: Principles and Practices. American Fisheries Society, Bethesda, MD. 561 pp. Schultz, R.C. and J.R. Thompson. 1997. Effect of density control and undercutting on root morphology of 1+0 bareroot hardwood seedlings: five-year field performance of root-graded stock in the central USA. New Forests 13: 301-314. Reichenbacker, R.R., E. R. Hart, and R.C. Schultz. 1996. Artificial defoliation effect on Populus growth, biomass production, and total nonstructural carbohydrate concentration. Environmental Entomology: 25: 632-642. Schultz, R.C., J.P. Colletti, R. R. Faltonson. 1995. Agroforestry opportunities for the United States of America. Agforestry Systems 31:117-132. Schultz, R.C., J.P. Colletti, T.M. Isenhart, W.W. Simpkins, C.W. Mize and M.L. Thompson. 1995. Design and placement of a multi- species riparian buffer strip system. Agroforestry Systems 31:117- 132. Schultz, R.C., J.P. Collett, W. W. Simpdins, C.W. Mize, and M.L. Thompson. 1995. Composition, placement, and design of a multi-species riparian buffer strip. Agroforestry Systems 29:201-226. Schultz, R.C., T.M. Isenhart, and J.P. Colletti. 1995. Riparian buffer systems in crop and rangeland. Pages 13-27 in Agroforestry and Sustainable Systems: Symposium Proceeding. USDA-Forest Service General Technical Report RM-GTR-261. Thompson, J.R. and R.C. Schultz. 1995. Root system morphology of Quercus rubra L. planting stock and 3-year field performance in Iowa. New Forests 9:225-236. Schultz, R.C., J.P. Colletti, R.R. Faltonson. 1995. Agroforestry opportunities for the United States of America. Agroforestry Systems 31:117-132. Schultz, R.C., J.P. Colletti, W.W. Simpkins, C.W. Mize, M.L. Thompson. 1995. Composition, placement, and design of a multi- species riparian buffer strip. Agroforestry Systems 29:201-226. Rule, L.C., J.P. Colletti, T.P. Liu, S.E. Jungst, C.W. Mize, and R.C. Schultz. 1994. Agroforestry and forestry-related practices in the Midwestern United States. Agroforestry Systems 26:1-10. Schultz, R.C., T.M. Isenhart, and J.P. Colletti. 1994. Riparian buffer systems in crop and rangelands. In: Agroforestry and Sustainable Systems: Symposium Proceedings. USDA For. Ser. Gen Tech Rpt RM-GTR-261. pp13-28. Meilan, R.R. Horgan, J.K. Heald, C.E. LaMotte, and R.C. Schultz. 1993. Identification of the cytokinins in red pine seedlings. Plant Growth Regulation 13:169-178. Colletti, J.P., R.B. Hall and R.C. Schultz. 1991. Hickory Grove an Iowa example of short-rotation woody crops in Agroforestry. Forestry Chronicle 67:258-262. Schultz, R.C. and J. R. Thompson. 1990. Nursery practices that improve hardwood seedling root morphology. Tree Planter's Notes 41:21-32. Extension Bulletins Stewards of our Streams: Riparian buffer systems. Pm-1626a, April, 1996. Iowa State University Extension, Ames, Iowa Stewards of our streams: Buffers strip design, establishment and maintenance. Pm-1626b, April 1997. Iowa State University Extension, Ames, Iowa. Stewards of our streams: Maintenance of riparian buffers. Pm1626c, March, 2002. Iowa State University Extension, Ames, Iowa Riparian buffers for agricultural land. Agroforestry Notes (AF Note- 3). January, 1997. National Agroforestry Center, Lincoln, Nebraska. How to design a riparian buffer for agricultural land. Agroforestry Notes (AF Note-4). January, 1997. National Agroforestry Center, Lincoln, Nebraska. A riparian buffer design for cropland. Agroforestry Notes (AF Note- 5). January, 1997. National Agroforestry Center, Lincoln, Nebraska.
Coordinates research program aimed at developing tree-based buffer systems to mitigate nonpoint source pollution, restore essential ecosystem functions, and provide economic opportunities at the farm/landscape levels. Conducts research on the tree/crop interface, ecological roles of tree-based buffers, development of design & management buffer tools, including comprehensive buffer planning m ethodology.
Research activities focus on vegetative propagation of hardwoods and the management of the vegetation within hardwood plantings and several agroforestry practices. Although part of a research team that developed the procedures for black walnut micropropagation, his research is now directed at the propagation of superior hardwood trees through rooting of cuttings. Increasingly, his research centers on benefits of incorporating native or forage legumes in tree plantings or the use of woody nurse crops to control grasses and other undesirable ground cover vegetation. Publications Vegetation Management in Hardwood Tree Plantings
McGraw, Robert L.; Navarrete-Tindall, Nadia E.; and Van Sambeek, J. W. 2001. Effects of shade on growth and nodulation of six native legumes with potential for use in agroforestry. P. 316. Shroeder, W. and Kort, J., eds., Proceedings, 7th Biennial Conference on Agroforestry in North America. Huck, M. B.; Kerley, M. S.; Garrett, H. E.; McGraw, R. L.; Van Sambeek, J. W.; and Navarrete-Tindall, N. E. 2001. Effect of shade on forage quality. P. 316. Shroeder, W. and Kort, J., eds., Proceedings, 7th Biennial Conference on Agroforestry in North America. Van Sambeek, J. W. and Preece, John E. 1999. Hybrid poplar establishment in tilled ground or grass sod using polyethylene films for weed control. HortScience 34(3):444. Van Sambeek, J. W.; Garrett, H. Gene, and Jones, James E. 1998. Ground covers to maximize ease of management, tree vigor, and ease of harvest. Pp. 107-111. IN: Jones, James E., Mueller, Rita, and Van Sambeek, J. W., eds., Nut Production Handbook for Eastern Black Walnut, Southwest Missouri RC&D, Republic, Missouri. Jones, James E.; Garrett, H. "Gene"; and Van Sambeek, J. W. 1997. Hammons' Sho-Neff Plantation - Combining research, technology transfer, and agribusiness. pp. 219-223. IN: Knowledge for the Future of Black Walnut (Proceedings, Fifth Black Walnut Symposium), USDA Forest Service General Technical Report NC-191. Van Sambeek, J. W.; Kobe, Jane M.; and Fralish, James S. 1997. Interference with shoot growth and flowering of dittany (Cunila origanoides (L.) Britton) by hardwood leachates. pp. 294-303. IN: Proceedings, Eleventh Central Hardwood Forest Conference, USDA Forest Service General Technical Report NC-188. Navarrete-Tindall, N. E. and Van Sambeek, J. W. 1996. Symbiotic promiscuity of rhizobia strains from Gliricidia sepium on legumes native to El Salvador. Forest, Farm, and Community Tree Research Reports 1:1-9. Navarrete-Tindall, N. E.; Van Sambeek, J. W.; and Klubek, B. P. 1996. Infectiveness and efficiency of Gliricidia sepium rhizobia strains from different elevations in El Salvador. Forest, Farm, and Community Tree Research Reports 1:78-83. Van Sambeek, J. W. 1993. Intercropping legumes reduce incidences of anthracnose in black walnut saplings. p. 64. Schultz, Richard C. and Colletti, Joe P., eds., Opportunities for Agroforestry in the Temperate Zone Worldwide (Proceedings of the Third North American Agroforestry Conference), Iowa State University Press. Van Sambeek, J. W. and McBride, F. D. 1991. Grass control improves early growth of black walnut more than either deep ripping or irrigation. pp. 42-57. IN: Garrett, H. E. 'Gene', ed., The Second Conference on Agroforestry in North American, University of Missouri. Also reprinted in 1993 in 84th Annual Report of the Northern Nut Growers Association 84:9-19. Van Sambeek, J. W. 1989. Vegetation management in established stands. pp. 114-125. In: Phelps, John E., ed., The Continuing Quest for Quality (Proceedings, 4th Black Walnut Symposium), Walnut Council, Indianapolis, IN. Van Sambeek, J. W.; Schlesinger, Richard C.; Roth, Paul L.; and Bocoum, Ibrahima. 1989. Revitalizing slow-growth black walnut plantings. pp. 108-114. IN: Proceedings of the Seventh Central Hardwood Forest Conference, USDA Forest Service General Technical Report NC-132. Van Sambeek, J. W. 1988. Soil-improving intercrops for black walnut. Walnut Council Bulletin 15(1):2-6, 11. Van Sambeek, J. W. 1988. Ground cover management. IN: Burde, E. Lucy, ed., Walnut Notes, USDA Forest Service, North Central Forest Experiment Station. Note 2.06. 3 p. Van Sambeek, J. W. 1988. Interplantings. IN: Burde, E. Lucy, ed., Walnut Notes, USDA Forest Service, North Central Forest Experiment Station. Note 2.09. 3 p. Rink, George and Van Sambeek, J. W. 1987. Variation among four white ash families in response to competition and allelopathy. Forest Ecology and Management 18(1):127-134. Van Sambeek, J. W.; Ponder, Felix, Jr.; and Rietveld, W. J. 1986. Legumes increase growth and alter foliage nutrient levels of black walnut saplings. Forest Ecology and Management 17(3/4):159-167. Rink, George and Van Sambeek, J. W. 1985. Variation among black walnut seedling families in resistance to competition and allelopathy. Plant and Soil 88(1):3-10. Van Sambeek, J. W. 1985. Intercropping black walnut. 76th Annual Report of the Northern Nut Growers Association 76:157-162. Schlesinger, Richard C. and Van Sambeek, Jerome W. 1985. Ground cover management can revitalize black walnut trees. Northern Journal of Applied Forestry 3(2):49-51. Van Sambeek, J. W.; Schlesinger, R. C.; Ponder, Felix, Jr.; and Rietveld, W. J. 1985. Actinorhizal species as nurse crops for black walnut. pp. 257-263. IN: Dawson, Jeffrey O. and Majerus, Kimberly A., eds., Proceedings, 5th Central Hardwood Forest Conference, Society of American Foresters Publication 85-05. Van Sambeek, J. W. and Rietveld, W. J. 1983. Leguminous cover crops can suppress weeds and accelerate growth of black walnut seedlings in intensively cultured plantations. pp. 229-243. IN: Muller, Robert N., ed., Proceedings, 4th Central Hardwood Forest Conference, University of Kentucky Press. Hardwood Vegetative Propagation Coggeshall, Mark V. and Van Sambeek, J. W. 2001. Developing a subirrigation system with potential for hardwood propagation. Combined Proceedings of the International Plant Propagators Society 51: in press. Navarrete-Tindall, Nadia E.; Van Sambeek, J. W.; Coggeshall, Mark V.; and McGraw, Robert L. 2001. Propagation of the endangered legume Amorpha nitens and the common shrub legume Amorpha fruticosa. Combined Proceedings of the International Plant Propagators Society 51: in press. Van Sambeek, J. W. and Preece, J. E. 2000. Forcing environment affects epicormic sprout production from branch segments for vegetative propagation of adult hardwoods. Combined Proceedings of the International Plant Propagators Society 49: 399-401. Van Sambeek, J. W.; Lambus, Lisa J.; and Preece, John E. 1998. Production of epicormic sprouts on branch segments of adult black walnut for in vitro culture. 88th Annual Report of the Northern Nut Growers Association 88: 93-104. Van Sambeek, J. W.; Lambus, Lisa J.; Khan, Saqib B.; and Preece, John E. 1997. In vitro establishment of tissues from adult black walnut. pp. 78-92. IN: Knowledge for the Future of Black Walnut (Proceedings, Fifth Black Walnut Symposium), USDA Forest Service General Technical Report NC-191. Van Sambeek, J. W.; Preece, John E.; Huetteman, Carl A.; and Roth, Paul L. 1995. Use of plastic films for weed control during field establishment of micropropagated hardwoods. pp. 496-506. IN: Proceedings, 10th Central Hardwood Forest Conference, USDA General Technical Report NE-197. Preece, John E.; Navarrete, Nadia; Van Sambeek, J. W.; and Gaffney, Gerald R. 1991. An in vitro microplant bioassay using clonal white ash to test for tall fescue allelopathy. Plant Cell, Tissue and Organ Culture 27:203?210. Navarrete, Nadia E.; Van Sambeek, J. W.; Preece, John E.; and Gaffney, Gerald R. 1989. Improved micropropagation of white ash (Fraxinus americana L.). pp. 146-149. IN: Proceedings of the Seventh Central Hardwood Forest Conference, USDA Forest Service General Technical Report NC?132. Heile-Sudholt, Catherine; Huetteman, Carl A.; Preece, John E.; Van Sambeek, Jerome W.; and Gaffney, Gerald R. 1986. In vitro embryonic axis and seedling shoot tip culture of Juglans nigra L. Plant Cell, Tissue and Organ Culture 6:189?197. Somers, Peter W.; Van Sambeek, J. W.; Preece, John E.; Gaffney, Gerald; and Myers, Oval, Jr. 1982. In vitro micropropagation of black walnut (Juglans nigra L.). pp. 224-230. IN: Thielges, Bart A., ed., Proceedings, 7th North American Forest Biology Workshop, University of Kentucky Press.
Doug Wallace has Bachelor of Science and Master of Science degrees in forestry from the University of Illinois. After graduation and until 1978, he was a field ecologist for the Illinois Natural Areas Inventory, the first comprehensive, systematic, statewide natural area inventory in the nation. Upon completion of the inventory, Doug began work for the USDA Natural Resources Conservation Service and served in a number of positions and locations in Illinois. Since 1988, he has served as state staff forester for NRCS in Columbia, Missouri. In addition to his duties as state staff forester, he is the NRCS Field Technical Services staff leader for conservation planning training and conducts research on the shade tolerance of big bluestem (doctoral candidate at UMC). Agroforestry-related interests include the establishment of trees and shrubs for waterbreaks, designing odor windbreak systems, and research on shade tolerance in warm season grasses for use in silvopasture and and savanna systems. Publications Dwyer, J.P., D. Wallace, and D.R. Larsen. 1997. Value of woody river corridors in levee protection along the Missouri River. Journal of the American Water Resources Association. 33(2):481 489. Allen, S.B., J.P. Dwyer, D.C. Wallace and E.A. Cook. 2003. Missouri River flood of 1993: Role of woody corridor width in levee protection. Journal of the American Water Resources Association. 39(4):923-933. Wallace D.C., W.A. Geyer, and J. P. Dwyer. 2000. Waterbreaks:Managed Trees for the Floodplain. Agroforestry Note 19. USDA National Agroforestry Center, Lincoln, NB. 4p.
Provides landscape architecture services to technology transfer and research programs at the National Agroforestry Center. Areas of expertise include landscape-scale planning and design, stream corridor restoration, biotechnical streambank protection, and visual simulation. Assists in the development of planning and design tools for the comprehensive buffer planning methodology project. Assists in the development and instruction of workshops and Employee Development Courses for the NRCS.
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