1. Kansas State University; Agricultural Research Center-Hays; 1232 240th Avenue Hays KS 67601-9228
2. Dep. of Agronomy; Kansas State University; Manhattan KS 66506
3. Kansas State University; Southwest Research-Extension Center; Tribune KS 67879
4. University of Nebraska-Lincoln; Panhandle Research and Extension Center; 4502 Avenue I Scottsbluff NE 69361
5. USDA-ARS; Central Great Plains Research Station; 40335 Road GG Akron CO 80720