1. Watershed Protection Division, 300 Austin Ave, Waco, TX 76702, USA
2. Texas A&M AgriLife Research, Temple, TX 76502, USA
3. Agricultural Research Service, United States Department of Agriculture, Temple, TX 76502, USA
4. Agricultural and Biological Engineering Department/Tropical Research and Education Center, Institute of Food and Agricultural Sciences, University of Florida, Homestead, FL 33031, USA