J. K. Norsworthy¹, K. L. Smith², Robert C. Scott³, L. E. Steckel⁴, Jason A. Bond⁵, Thomas W. Eubank⁵ and D. O. Stephenson⁶, (1)University of Arkansas, Fayetteville, AR, (2)University of Arkansas - Division of Agriculture, Monticello, AR, (3)University of Arkansas, Lonoke, AR, (4)University of Tennessee, Knoxville, TN, (5)Mississippi State University, Stoneville, MS, (6)LSU AgCenter, Alexandria, LA