1. Kansas State University; Dep. of Agronomy, Agricultural Research Center-Hays; 1232 240th Ave. Hays Kansas 67601-9228
2. USDA-ARS, Central Great Plains Research Station, Northern Plains Area; 40335 Rd. GG Akron CO 80720
3. Dep. of Agronomy; Kansas State University; Manhattan KS 66506
4. Kansas State University; 202 S. Roupp Hesston KS 67062