[1] USDA-ARS, Agroecosystem Management Research Unit, Lincoln,NE, United States
[2] School of Natural Resources, University of Nebraska-Lincoln, Lincoln,NE, United States
[3] Department of Agronomy and Horticulture, University of Nebraska-Lincoln, Lincoln,NE, United States
[4] College of Engineering, University of Nebraska-Lincoln, Lincoln,NE, United States
[5] Agricultural Research Division, University of Nebraska-Lincoln, Lincoln,NE, United States
[6] Biological Systems Engineering, University of Nebraska-Lincoln, Lincoln,NE, United States