Jeff Gore¹, D. R. Cook², Angus Catchot³, F. R. Musser³, S. D. Stewart⁴, B. R. Leonard⁵, G. Lorenz⁶, G. Studebaker⁷, D. S. Akin⁸ and R. E. Jackson⁹, (1)Mississippi State University, DREC, Stoneville, MS, (2)Mississippi State University, Stoneville, MS, (3)Mississippi State University, Mississippi State, MS, (4)Jackson, TN, (5)LSU AgCenter, Winnsboro, LA, (6)University of Arkansas Cooperative Extension Service, Lonoke, AR, (7)Univ. of Ark.- NEREC, Keiser, AR, (8)University of Arkansas, Monticello, AR, (9)USDA-ARS, SIMRU, Stoneville, MS