D. R. Cook¹, Jeff Gore¹, S. D. Stewart², G. Lorenz³, A. L. Catchot⁴, B. R. Leonard⁵, D. S. Akin⁶, G. Studebaker⁷ and F. R. Musser⁴, (1)Mississippi State University, Stoneville, MS, (2)Jackson, TN, (3)University of Arkansas Cooperative Extension Service, Lonoke, AR, (4)Mississippi State University, Mississippi State, MS, (5)LSU AgCenter, Macon Ridge Research Station, Winnsboro, LA, (6)University of Arkansas, Monticello, AR, (7)Univ. of Ark.- NEREC, Keiser, AR