1. Dep. of Agronomy and Horticulture Univ. of Nebraska‐Lincoln High Plains Agricultural Lab. 3257 Rd 109 Sidney NE 69162 USA
2. Dep. of Agronomy and Horticulture Univ. of Nebraska‐Lincoln West Central Research and Extension Center 402 W State Farm Rd North Platte NE 69101 USA
3. Dep. of Agronomy and Horticulture Univ. of Nebraska‐Lincoln Panhandle Research & Extension Center 4502 Ave I Scottsbluff NE 69361 USA