1. Dep. of Plant Science Univ. of California‐Davis, West Side Research and Extension Center Five Points CA 93624
2. USDA‐ARS Cropping Systems Research Lab., Plant Stress and Germplasm Development Unit Lubbock TX 79415
3. Univ. of California Tulare CA 93274
4. USDA‐ARS Coastal Plains Soil and Water Conservation Research Center Florence SC 29501
5. USDA‐ARS Southern Plains Agricultural Research Center, Crop Germplasm Unit College Station TX 77845
6. Mississippi State Univ. Starkville MS 39762
7. Agriculture Center Louisiana State Univ. Baton Rouge LA 70803
8. Northeast Research and Extension Center Univ. of Arkansas Keiser AR 72351
9. Dep. of Agronomy and Soils Auburn Univ. Auburn AL 36849
10. Univ. of Georgia National Environmentally Sound Production Agriculture Laboratory Tifton GA 31793
11. Delta Research and Extension Center Stoneville MS 38776
12. Dep. of Plant and Environmental Sciences New Mexico State Univ. Las Cruces NM 88003
13. Dep. Crop and Soil Sciences Texas A&M Univ. College Station TX 77843
14. Texas A&M AgriLife Research and Extension Center Lubbock TX 79403
15. Dep. of Crop Science North Carolina State Univ. Raleigh NC 27695
16. Cotton Incorporated Cary NC 27513