Gus M. Lorenz¹, Ralph D. Bagwell², Glenn E. Studebaker³, Fred Musser⁴, Angus Catchot⁴, and Scott D. Stewart⁵. (1) Univ. of Arkansas CES, P.O. Box 391, 2301 S. University Ave., Little Rock, AR 72203, (2) LSU Agcenter, 212B Macon Ridge Rd., Winnsboro, LA 71295, (3) University of Arkansas, P.O. Box 48, 1241 W County Road 780, Keiser, AR 72351-0048, (4) Mississippi State University, Clay Lyle Bldg., Mississippi State, MS 39762, (5) The University of Tennessee, West TN Research and Education Center, 605 Airways Blvd., Jackson, TN 38301