Mohammed A Naser1, Richard B. Ferguson2, Brian T Krienke3, Keith L. Glewen4, Suat Irmak5, Daran R. Rudnick5, Charles A. Shapiro3 and Tim Shaver6, (1)Department of Agronomy and Horticulture, University of Nebraska-Lincoln, Lincoln, NE, (2)Department of Agronomy and Horticulture, University of Nebraska, Lincoln, NE, (3)Department of Agronomy and Horticulture, University of Nebraska - Lincoln, Lincoln, NE, (4)Nebraska Extension, University of Nebraska-Lincoln, Lincoln, NE, (5)Department of Biological Systems Engineering, University of Nebraska-Lincoln, Lincoln, NE, (6)Department of Agronomy & Horticulture, West Central Research and Extension Center, University of Nebraska–Lincoln, North Platte, NE