1. Dep. of Agronomy and Horticulture
2. USDA-ARS and Dep. of Agronomy and Horticulture
3. Dep. of Agronomy and Horticulture, West Central Res. and Ext. Center; North Platte NE 69101
4. Dep. of Agronomy and Horticulture, Panhandle Research and Extension Center; Scottsbluff NE 69361
5. Dep. of Agronomy and Horticulture; Univ. of Nebraska; Lincoln NE 68583
6. Soil and Crop Sciences Dep.; Texas A&M Univ.; College Station TX 77843
7. Sustainable Agriculture Res. and Ext. Center; Univ. of Wyoming; Lingle WY 88223
8. Dep. of Plant Pathology; Univ. of Nebraska; Lincoln NE 68583
9. USDA-ARS and Dep. of Plant Pathology; Univ. of Minnesota; St. Paul MN 55108
10. USDA-ARS; Center for Grain and Animal Health Research, and Dep. of Entomology
11. USDA-ARS, Center for Grain and Animal Health Research, and Dep. of Agronomy; Kansas State Univ.; Manhattan KS 66506