A. L. Catchot¹, Jeff Gore², D. R. Cook², B. R. Leonard³, G. Lorenz⁴, Scott D. Stewart⁵, K. V. Tindall⁶, D. S. Akin⁷, G. Studebaker⁸, R. E. Jackson⁹ and W.S. Scott¹, (1)Mississippi State University, Mississippi State, MS, (2)Mississippi State University, Stoneville, MS, (3)LSU AgCenter, Macon Ridge Station, Winnsboro, LA, (4)University of Arkansas, Keiser, AR, (5)The University of Tennessee, Jackson, TN, (6)Univ. of Missouri, Portageville, MO, (7)University of Arkansas, Monticello, AR, (8)Univ. of Ark.- NEREC, Keiser, AR, (9)USDA-ARS, SIMRU, Stoneville, MS