Ana B. Wingeyer1, Martha Mamo2, Jeffrey Bradshaw3, Walter Schacht2, Jerry Volesky4, John A. Guretzky5, Richard B. Ferguson6, Haishun Yang7, Kent Eskridge8, Sean Whipple9 and Karla Jenkins10, (1)EEA- Parana, Instituto Nacional de Tecnología Agropecuaria, Entre Rios, Argentina, (2)Agronomy and Horticulture, University of Nebraska-Lincoln, Lincoln, NE, (3)University of Nebraska - Lincoln, Scottsbluff, NE, (4)University of Nebraska - Lincoln, North Platte, NE, (5)University of Nebraska-Lincoln, University of Nebraska-Lincoln, Lincoln, NE, US, (6)Department of Agronomy and Horticulture, University of Nebraska-Lincoln, Lincoln, NE, (7)Agronomy and Horticulture, University of Nebraska-Lincoln, Lincoln, NE, US, (8)Department of Statistics, University of Nebraska - Lincoln, Lincoln, NE, (9)ISK Biosciences, Kearney, MO, (10)Panhandle Research & Extension Center, University of Nebraska- Lincoln, Scottsbluff, NE