Michael T. Edwards¹, Richard M. Edmund², J. Dan Smith³, Glenn G. Hammes⁴, Daniel W. Sherrod⁵ and Charles S. Baer⁵, (1)DuPont Crop Protection, Pierre Part, LA, (2)DuPont Crop Protection, Little Rock, AR, (3)DuPont Crop Protection, Madison, MS, (4)DuPont Crop Protection, Blairsville, GA, (5)DuPont Crop Protection, Memphis, TN