1. Dep. of Crop and Soil Sciences; Univ. of Georgia; 2356 Rainwater Road Tifton GA 31793
2. Dep. of Soil and Crop Sciences; Texas A&M Univ.; 370 Olsen Blvd. College Station TX 77843-2474
3. Dep. of Plant and Soil Science; Texas Tech Univ.; Mail Stop 2122 Lubbock TX 79409-2122
4. Fiber and Biopolymer Research Institute; Texas Tech Univ.; Box 45019 Lubbock TX 79049-5019