Clark B. Neely1, Amir M.H. Ibrahim2, Jackie C. Rudd3, Russell L. Sutton4, Robert D. Duncan5, Daniel Hathcoat6, Bryan Simoneaux2, Jason A. Baker3 and Ron French7, (1)PO Box 646420, Washington State University, Pullman, WA, US, (2)Soil and Crop Sciences, Texas A&M University, College Station, TX, (3)Texas A&M AgriLife Research, Amarillo, TX, (4)Soil and Crop Sciences, Texas A&M AgriLife Research, Commerce, TX, (5)Plant Science, University of Manitoba, Winnipeg, MB, Canada, (6)Department of Soil and Crop Sciences, Texas A&M University, College Station, TX, (7)Texas A&M University, Amarillo, TX