William J. Cox
Crop Management/Ecology

620 Bradfield Hall (607)255-1758; Fax (607)255-2644 E-mail:wjc3@cornell.edu B.S. 1970 (College of the Holy Cross) M.S. 1978 (California State University/Fresno) Ph.D. 1982 (Oregon State University) William Cox, a Professor of Crop Science, joined the Cornell faculty on an extension/research appointment in 1984. Prior to his Cornell appointment, he was an Assistant Professor in the Department of Crop Science at California Polytechnic University/San Luis Obispo (1982-1984). He served as the Department's Extension Leader (1989-1995) and Chair of the College's Statewide Program Committee on Crop and Soil Management (1996-2001). In addition, he was chair of the New York Certified Crop Adviser (CCA) program (1996-2000), a program sponsored by the American Society of Agronomy for practicing agronomists. He was also a member of the National CCA Board, which develops standards and policy for the program. He is currently an Associate Editor for the Agronomy Journal and the electronic publication, Crop Management.

Research/Extension Program My research program focuses on the environmental, biotic, and management interactions that influence the growth, development, yield, and quality of corn, soybeans, and wheat in New York. I interact closely with soil scientists, animal scientists, plant pathologists, entomologists, and plant breeders in most of my research endeavors. My role in the multidisciplinary research is to quantify whole-plant physiological responses of the crop to the environmental, biotic, and crop management interactions. My extension program, supported strongly by my applied research program, recommends the best management practices for corn, soybeans, and wheat in New York. The targeted audience for my statewide educational program includes extension agents, agricultural practitioners ("multipliers"), crop producers, and government agency personnel. I also chair the Crop and Soil Management Statewide Program workteam in which I work closely with committee members (agricultural practitioners, farmers, extension agents, government agency personnel, and extension faculty) in developing statewide extension activities in field crop production. Some accomplishments of the committee include development of the New York and subsequently Northeast Certified Crop Adviser (CCA) program, development of the field crops section of the Agricultural Systems Initiative, and coordination with the New York Corn Growers Association in sponsoring the annual New York Field Crop and Feed Crop Industry Day.

Selected Publications Cox, W.J.,R.R. Hahn, and P.J. Stachowski. 2006. Time of weed removal with glyphosate affects corn growth and yield components. Agron.J. 98: 289-294. Cox, W.J., J.J. Hanchar, W.A. Knoblauch, and J.H. Cherney. 2006. Growth yield, quality, and economics of corn silage under different row spacings. Agron.J. 98: 163-167. Cox, W.J., R.R. Hahn, P.J. Stachowski, and J.H. Cherney. 2005. Weed interference and glyphosate timing affect corn forage yield and quality. Agron.J. 97: 847-853. Cox, W.J. and J.H. Cherney. 2005. Timing corn forage harvest for bunker silos. Agron.J. 97: 142-146. Cox, W.J., W.A. Knoblauch, H.M. van Es, T.W. Katsvairo, and M.A. Gloss. 2004. Economics of purchasing a yield monitor for split-planter corn hybrid testing. Agron.J. 96: 1469-1474. Lewis, A.L.,W.J.Cox, and J.H.Cherney. 2004. Hybrid, maturity, and cutting height interactions on corn forage yield and quality. Agron.J. 96:267-274. Katsvairo,T.W., W.J.Cox, H.M.van Es, and M.Glos. 2003. Spatial yield response of two corn hybrids at two nitrogen levels. Agron.J. 95:1012-1022. Katsvairo, T.W, W.J.Cox, and H.M van Es. 2003. Spatial growth and nitrogen uptake variability of corn and two nitrogen levels. Agron.J. 95:1000-1011. Cox, W.J., and D.J.R. Cherney. 2002. Evaluation of narrow row corn forage in field-scale studies. Agron. J. 94:321-325. Katsvairo, T., W.J. Cox. and H. van Es. 2002. Tillage and rotation effects on soil physical characteristics. Agron. J. 94: 299-304. Hively, ,W.D., and W.J. Cox. 2001. Interseeding of cover crops into soybeans and subsequent corn yields. Agron. J. 93:308-313. Cox, W.J., and D.J.R. Cherney. 2001. Row spacing, plant density, and nitrogen effects on corn forage. Agron. J. 93: 597-602. Cox, W.J., and D.J.R. Cherney. 2001. Influence of brown midrib, leafy, and transgenic hybrids on corn forage. Agron. J. 93: 790-796. Katsvairo, T.W., and W.J. Cox. 2000. Tillage x rotation x management interactions in corn. Agron. J. 92: 493-500. Katsvairo, T.W. and W.J. Cox. 2000. Economics of cropping systems featuring different tillage, rotation, and management systems. Agron J. 92: 485-493. Singer, J.W., W.J. Cox, R.R. Hahn, and E.J. Shields. 2000. Cropping system effects on weed emergence and densities in corn. Agron. J. 92: 754-760. Cox, W.J., J.W. Singer, E.J. Shields, J. Keith Waldron, and G.C. Bergstrom. 1999. Agronomics and economics of different weed management systems in corn and soybean. Agron. J. 91: 585-591. Singer, J.. and W.J. Cox. 1998. Corn growth and yield under different crop rotation, tillage, and management systems. Crop Sci. 38: 96-1003. Singer, J.W., and W.J. Cox. 1998. Agronomics of corn production under different crop rotations in New York. J. Prod. Agric. 11: 462-468. Singer, J.W., and W.J. Cox. 1998. Economics of different crop rotations in New York. J. Prod. Agric. 11: 447-451. Crasta, O.R., W.J. Cox, and J.H. Cherney. 1997. Factors affecting maize forage quality development in the northeastern USA. Agron. J. 89: 251-256. Cox, W.J. Corn silage and grain yield responses to plant densities. 1997. J. Prod. Agric. 10: 355-360. Cox, W.J. 1996. Whole plant physiological and yield responses of maize to plant density. Agron. J. 88: 489-496. Crasta, O.R. and W.J. Cox. 1996. Temperature and soil water effects on maize growth, development, yield and forage quality. Crop Sci. 36: 341-348.