Dr. Mauricio Ulloa, USDA-ARS, Western Intergrated Cropping Systems, Res. Unit, 17053 N. Shafter Ave., Shafter, CA 93263, Dr. Richard Percy, Arid-Land Agricultural Research Center, USDA-ARS, 21881 North Cardon Lane, Maricopa, AZ 85239, Dr. Robert Hutmacher, UC Shafter REC and UC Davis Department of Plant Science, 17053 N. Shafter Avenue, Shafter, CA 93263, and Dr. Jinfa Zhang, New Mexico State University, Department of Plant and Environmental Sciences, P. O Box 30003, Las Cruces, NM 88003.