Greenley Research Center Publications


Senaviratne, G.M.M.M.A., R.P. Udawatta, C. Baffaut, and S.H. Anderson. 2013. APEX simulation of three adjacent row-Crop watersheds in the claypan region. J. Environ. Qual.  42:726-736.

Udawatta, R.P., S.H. Anderson, C.J. Gantzer, and S. Assouline. 2013. Computed tomographic evaluation of earth materials with varying resolutions pp. 97-112 In  S.H. Anderson  and J.W. Hopmans (eds.)  Soil-Water-Root Processes:  Advances in Tomography and Imaging. Soil Sci. Soc. Am. Special Pub. 61, Madison, WI.

Udawatta, R.P. and S. Jose. 2012. Agroforestry strategies to sequester carbon in temperate North America. Agroforest. Syst. DOI 10.1007/s10457-012-9561-1

Senaviratne, G.M.M.M.A., R.P. Udawatta, K.A. Nelson, K. Shannon, and S. Jose. 2012. Temporal and spatial influence of perennial upland buffers on corn and soybean yields. Agron. J. 104:1356-1362.

Nelson, K.A., P.P. Motavalli, W.E. Stevens, J.A. Kendig, D. Dunn, and M. Nathan. 2012. Foliar potassium fertilizer additives affect soybean response and weed control with glyphosate. Intl. J. Agron. DOI 10.1155/2012/461894

Harder, D.B., K.A. Nelson, and R.J. Smeda. 2012. Management options and factors affecting control of a common waterhemp (Amaranthus rudis) biotype resistant to protoporphyrinogen oxidase-inhibiting herbicides. Int. J. Agron. DOI 10.1155/2012/514765

Dudenhoeffer, C.J., K.A. Nelson, P.P. Motavalli, D. Dunn, W.E. Stevens, K. Goyne, M. Nathan, and P. Scharf. 2012. Corn production as affected by phosphorus enhancers, phosphorus source and lime. J. Agric. Sci. 4:137-143. DOI 10.5539/jas.v4n10p137

Nelson, K.A., and R.L. Smoot. 2012. Corn hybrid response to water management practices on claypan soil. Int. J. Agron. DOI 10.1155/2012/925408

Sandler, L., K.A. Nelson, and R.L. Smoot. 2012. Rice cultivar production and seed overwinter potential in upstate Missouri. Am. J. Exp. Agric. 2:426-441.

Nash, P.R., P.P. Motavalli, and K.A. Nelson. 2012. Nitrous oxide emissions from claypan soils due to nitrogen fertilizer source and tillage/fertilizer placement practices. Soil Sci. Soc. Am. J. 76:983-993.

Nash, P.R., K.A. Nelson, P.P. Motavalli and C.G. Meinhardt. 2012. Effects of polymer-coated urea application ratios and dates on wheat and subsequent double-crop soybean. Agron. J. 104:1074-1084.

Nelson, K.A., C.G. Meinhardt, and R.L. Smoot. 2012. Soybean cultivar response to subsurface drainage and subirrigation in Northeast Missouri. Online. Crop Management. DOI 10.1094/CM-2012-0320-03-RS

Senaviratne, A., R.P. Udawatta, K.A. Nelson, K. Shannon, and S. Jose. 2012. GIS analysis of proximity influence of agroforestry and grass buffers on corn and soybean yields. Agron. J. In press.

Nash, P.R., K.A. Nelson, and P.P. Motavalli. 2012. Polymer-coated urea application ratios and timings affect wheat and double-crop soybean yields. Agron. J. 104:1074-1084.

Sandler, L., K.A. Nelson, and R.L. Smoot. 2012. Rice cultivar production and seed over winter potential in upstate Missouri. Am. J. Exp. Agric. 2:426-441.

Nelson, K.A., and R.L. Smoot. 2012. Corn hybrid response to water management practices on claypan soil. Int. J. Agron. DOI 10.1155/2012/925408

Nash, P.R., P.P. Motavalli, and K.A. Nelson. 2012. Nitrous oxide emissions from claypan soils due to nitrogen fertilizer source and tillage/fertilizer placement practices. Soil Sci. Soc. Am. J. 76:983-993.

Nelson, K. A., Meinhardt, C. G., and Smoot, R. L. 2012. Soybean cultivar response to subsurface drainage and subirrigation in Northeast Missouri. Online. Crop Management. DOI 10.1094/CM-2012-0320-03-RS

Nelson, K.A., and C.G. Meinhardt.  2011.  Foliar boron and pyraclostrobin effects on corn yield.  Agron. J. 103:1352-1358.

Nelson, K.A., and C.G. Meinhardt.  2011.  Soybean yield response to pyraclostrobin and drainage water management.  Agron. J. 103: 1359-1366.

Nelson, K.A., R.L. Smoot, and C.G. Meinhardt.  2011.  Soybean response to drainage and subirrigation on a claypan soil in Northeast Missouri.  Agron. J. 103:1216-1222.

Nelson, K.A., R.J. Smeda, and R.L. Smoot.  2011.  Spring-interseeded winter rye seeding rates influence weed control and organic soybean yield.  Int. J. Agron. DOI 10.1155/2011/571973

Nelson, K.A., R.E. Massey, and B.A. Burdick.  2011.  Harvest aid application timing affects wheat (Triticum aestivum L.) and relay intercropped soybean (Glycine max L.) response.  Agron. J. 103:851-855.

Nelson, K.A., P.C. Scharf, W.G. Stevens, and B.A. Burdick.  2010.  Rescue nitrogen applications for corn.  Soil Sci. Soc. Am. J. 75:143-151.

Nelson, K.A., P.P. Motavalli, W.E. Stevens, D. Dunn, and C.G. Meinhardt.  2010.  Soybean response to pre-plant and foliar-applied potassium chloride with strobilurin fungicides.  Agron. J. 102:1657-1663.

Nelson, K.A., C.G. Meinhardt, and R.L. Smoot.  2010.  Wheat (Triticum aestivum L.) cultivar selection affects double-crop and relay-intercrop soybean (Glycine max L.) response on claypan soils.  Int. J. Agron. DOI 10.1155/2010/543261

Nelson, K.A., R.L. Smoot, and B.A. Burdick. 2010.  Seed coat technology affects yields of relay intercrop, full season, and double crop soybean in upstate Missouri.  Online. Crop Management. DOI 10.1094/CM-2010-06XX-01-RS

Anderson, S.H., R.P. Udawatta, S. Kumar, C.J. Gantzer, and A. Rachman. 2010. CT-measured macropore parameters for estimating saturated hydraulic conductivity at four study sites. 19th World Congress of Soil Science, Soil Solutions for a changing world. Aug. 1-6, 2010 Brisbane, Australia.

Nelson, K.A. and R.L. Smoot. 2010. Yellow nutsedge (Cyperus esculentus) interference in soybean. Weed Technol. 24: 39-43.

Udawatta, R.P., H.E. Garrett, and R.L. Kallenbach. 2010. Agroforestry and grass buffer effects on water quality in grazed pastures. Agrofor. Syst. 79: 81-87.

Anderson, S.H., R.P. Udawatta, T. Seobi, and H.E. Garrett. 2009. Soil water content and infiltration in agroforestry buffer strips. Agrofor. Syst. 75: 5-16.

Bailey, N.J., P.P. Motavalli, R.P. Udawatta, and K.A. Nelson. 2009. Soil CO2 emissions in agricultural watershed with agroforestry and grass contour buffer strips. Agrofor. Syst. 77: 143-158.

Nelson, K.A., P.P. Motavalli, and R.L. Smoot.  2009.  Dried distillers grain as a fertilizer source for corn.  J. Agric. Sci.  1:3-12.

Nelson, K.A., S.M. Paniagua, and P.P. Motavalli.  2009.  Effect of polymer coated urea, irrigation, and drainage on nitrogen utilization and yield of corn in a claypan soil.  Agron. J. 101:681-687.

Nelson, K.A., and R.L. Smoot.  2009.  Twin- and single-row corn production in Northeast Missouri.  Online. Crop Management. DOI 10.1094/CM-2009-0130-01-RS

Noellsch, A.J., P.P. Motavalli, K.A. Nelson, and N.R. Kitchen.  2009.  Corn nitrogen response across a claypan landscape using polymer-coated urea and anhydrous ammonia.  Agron. J. 101:607-614.

Udawatta, R.P., R.J. Kremer, H.E. Garrett, and S.H. Anderson.  2009. Soil enzyme activities and physical properties in a watershed managed under agroforestry and row-crop systems. Agric. Ecosyst. Environ. 131:98-104.

Veum, K.S., K.W. Goyne, P.P. Motavalli, R.P. Udawatta, and H.E. Garrett. 2009. Dissolved organic carbon losses in runoff from three adjacent agricultural watersheds before and after establishment of vegetative buffers. Agric. Ecosyst. Environ. 130: 115-120.

Bradley, K.W. and L. Sweets. 2008. Influence of glyphosate and fungicide coapplications on weed control, spray penetration, soybean response, and yield in glyphosate-resistant soybean. Agron. J.100:1360-1365.

Motavalli, P.P. and K.A. Nelson.  2008.  Use of enhanced-efficiency fertilizers for improved agricultural nutrient management: Introduction to the symposium.  Online. Crop Management. DOI 10.1094/CM-2008-0730-01-PS

Nelson, K.A., P.C. Scharf, L.G. Bundy, and P. Tracy. 2008. Agricultural management of enhanced-efficiency fertilizers in the north-central United States.  Online.  Crop Management. DOI 10.1094/CM-2008-0730-03-RV.

Bradley, K.W., N.H. Monnig, T.R. Legleiter, and J.D. Wait. 2007. Influence of glyphosate tank-mix combinations and application timings on weed control and yield in glyphosate-resistant soybean. Online. Crop Management DOI 10.1094/CM-2007-0419-01-RS.

Fang, M., P.P. Motavalli, R.J. Kremer, and K.A. Nelson.  2007.  Assessing changes in soil microbial communities and carbon mineralization in Bt and non-Bt corn residue-amended soils.  Applied Soil Ecology 37:150-160.

Nelson, K.A.  2007.  Glyphosate application timings in twin- and single-row corn (Zea mays L.) and soybean (Glycine max L.).  Weed Technol. 21:186-190.

Nelson, K.A., and P.P. Motavalli.  2007.  Foliar potassium fertilizer sources affect weed control in soybean with glyphosate.  Online.  Crop Management doi:10.1094/CM-2007-0724-01-RS.

Nelson, K.A., G.E. Rottinghaus, and T.E. Nelson.  2007.  Effect of lactofen application timing on yield and isoflavone concentration in soybean seed.  Agron. J. 99:645-649.

Donald, W.W., and K.A. Nelson.  2006.  Practical changes to single-boom sprayers for zone herbicide application.  Weed Technol. 20:502-510.

Nelson, K.A., W.G. Johnson, J.D. Wait, and R.L. Smoot.  2006.  Winter annual weed management in corn (Zea mays) and soybean (Glycine max) and the impact on soybean cyst nematode (Heterodera glycines) egg population densities.  Weed Technol. 20:965-970.

Scursoni, J., F. Forcella, J. Gunsolus, M. Owen, R. Oliver, R. Smeda, and R. Vidrine. 2006. Weed diversity and soybean yield with glyphosate management along a north-south transect in the United States. Weed Sci. 54:713-719.

Conley, S.P., and K.W. Bradley. 2005. Wheat (Triticum aestivum) yield response to henbit (Lamium amplexicaule) interference and simulated winterkill. Weed Technol. 19:903-906.

Mungai, N.W., P.P. Motavalli, R.J. Kremer, and K.A. Nelson.  2005.  Differences in yields, residue composition, and N mineralization dynamics of Bt and non-Bt maize.  Nutrient Cycling in Agroecosystems. 73:101-109.

Mungai, N.W., P.P. Motavalli, R.J. Kremer, and K.A. Nelson.  2005.  Spatial variation of soil enzyme activities and microbial functional diversity in temperate alley cropping systems. Biol. Fertil. Soils.  42:129-136.

Nelson, K.A., P.P. Motavalli, and M. Nathan. 2005.  Response of no-till soybean to timing of pre-plant and foliar potassium applications in a claypan soil. Agron. J. 97:832-838.

Schmidt, A.A., W.G. Johnson, D.A. Mortensen, A.R. Martin, A. Dille, D.E. Peterson, C. Guza, J.J. Kells, R.D. Lins, C.M. Boerboom, C.L. Sprague, S.Z. Knezevic, F.W. Roeth, C.R. Medlin, and T.T. Bauman. 2005. Evaluation of corn (Zea mays L.) yield-loss estimations by WeedSoft® in the north central region. Weed Technol. 19:1056-1064.

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.

Udawatta, R.P., P. Nygren, and H.E. Garrett. 2005. Growth of three oak species during establishment of an agroforesty practice for watershed protection. Can. J. for Res. 35:602-609.

Conley, S., D. Bordovsky, C. Rife, and W. Wiebold. 2004. Winter canola survival and yield response to nitrogen and fall phosphorus. Crop Management doi:10.1094/CM-2004-0901-01-RS.

Cordes, J.C., W.G. Johnson, P. Scharf, and R.J. Smeda. 2004. Late-emerging common waterhemp (Amaranthus rudis) interference in conventional tillage corn. Weed Technol. 18:999-1005.

Donald, W.W., W.G. Johnson, and K.A. Nelson.  2004.  Zone herbicide application controls annual weeds and reduces residual herbicide use in corn.  Weed Sci. 52:821-833.

Donald, W.W., W.G. Johnson, and K.A. Nelson.  2004.  In-row and between-row interference by corn (Zea mays) modifies annual weed control by postemergence residual herbicides.  Weed Technol. 18:497-504.

Li, J., R.J. Smeda, K.A. Nelson, and F.E. Dayan.  2004.  Physiological basis for resistance to diphenyl ether herbicides in common waterhemp (Amaranthus rudis).  Weed. Sci. 52:333-338.

Udawatta, R.P., P.P. Motavalli, and H.E. Garrett. 2004 Phosphorus loss and runoff characteristics in three adjacent agricultural watersheds with claypan soils. J. Environ. Qual. 31:1214-1225.

Dewell, R.A., W.G. Johnson, K.A. Nelson, J. Li, and J.D. Wait.  2003.  Weed management in no-till, double-crop, glyphosate-resistant soybean grown on claypan soils.  Plant Management Network News.  Online.  Crop Management doi:10.1094/CM-2003-1205-01-RS.

Donald, W.W. and W.G. Johnson. 2003. Interference effects of weed-infested bands in or between crop rows on field corn (Zea mays) yield. Weed Technol. 17:755-763.

Hellwig, K.B., W.G. Johnson, and R.E. Massey. 2003. Weed management and economic returns in no-tillage herbicide-resistant corn (Zea Mays). Weed Technol. 17:239-248.

Sellers, B., R. Smeda, and W. Johnson.  2003. Atrazine may overcome the time-of-day effect on Liberty efficacy. Crop Management doi:10.1094/CM-2003-1111-01-RS.

Beyers, J.T., R.J. Smeda, and W.G. Johnson. 2002. Weed management programs in glufosinate-resistant soybean (Glycine max). Weed Technol. 16:267-273.

Bradley, P.R., W.G. Johnson, S.E. Hart, M.L. Buesinger, and R.E. Massey. 2000. Economics of weed management in glufosinate-resistant corn (Zea mays L.). Weed Technol. 14:495-501.

Dirks, J.T., W.G. Johnson, R.J. Smeda, W.J. Wiebold, and R.E. Massey. 2000. Reduced rates of sulfentrazone plus chlorimuron and glyphosate in no-till, marrow-row, glyphosate-resistant Glycine max. Weed Sci. 48:618-627.

Dirks, J.T., W.G. Johnson, R.J. Smeda, W.J. Wiebold, and R.E. Massey. 2000. Use of preplant sulfentrazone in no-till, marrow-row, glyphosate-resistant Glycine max. Weed Sci. 48:628-639.

Johnson, W.G., P.R. Bradley, S.E. Hart, M.L. Buesinger, and R.E. Massey. 2000. Efficacy and economics of weed management in glyphosate-resistant corn (Zea Mays). Weed Technol. 14:57-65.