Lisa Woodruff1, David E. Kissel2, Miguel L. Cabrera3, Julia W. Gaskin4, Leticia S. Sonon5, Uttam K. Saha6, Rick Hitchcock2, Merle F. Vigil7, Mussie Y. Habteselassie8 and John Rema9, (1)Crop Production Systems Research Unit, USDA-ARS, Stoneville, MS, (2)Agricultural and Environmental Services Laboratories, University of Georgia, Athens, GA, (3)Department of Crop and Soil Sciences, University of Georgia-Athens, Athens, GA, US, (4)Miller Plant Science, University of Georgia-Athens, Athens, GA, (5)2400 College Station Road, Actagro LLC, Fresno, CA, US, (6)2300 College Station Rd, University of Georgia-Athens, Athens, GA, US, (7)USDA-ARS, Fort Collins, CO, (8)Crop and Soil Sciences, University of Georgia, Griffin, GA, (9)University of Georgia, Athens, GA