Dr. Efrem Bechere1, Dr. Dick L. Auld1, Dr. Peter A. Dotray2, and Mr. Lyndell V. Gilbert3. (1) Texas Tech University, Plant and Soil Sciences Department, Box 42122, Lubbock, TX 79409-2122, (2) Texas Tech University, Texas Agricultural Experiment Station, Texas Cooperative Extension, Lubbock, TX 79403, Lubbock, TX 79403, (3) Texas Agricultural Experiment Station, 1102 East FM 1294, Lubbock, TX 79403