Kenneth J Boote1, Federico Sau2, Cheryl H. Porter3, Kofikuma Dzotsi1, Matthijs Tollenaar4, Saratha V. Kumudini5, James W. Jones6, Jerry L Hatfield7 and Claudio O. Stockle8, (1)University of Florida, Gainesville, FL, (2)Dep. Producción Vegetal, Univ. Politécnica of Madrid, Madrid, Spain, (3)103 Frazier Rogers Hall, University of Florida, Gainesville, FL, (4)Monsanto Company - USA, Research Triangle Park, NC, (5)The Climate Corporation, Research Triangle Park, NC, (6)Ag. and Bio. Engineering, University of Florida, Gainesville, FL, (7)Locked Bag 1797, National Laboratory for Agriculture and the Environment, Ames, IA, (8)Washington State University, Pullman, WA