Eileen J. Kladivko, Department of Agronomy, Purdue University, West Lafayette, IN, Alexandra N. Kravchenko, Department of Plant, Soil and Microbial Sciences, Michigan State University, East Lansing, MI, Matthew J Helmers, Ag & Biosystems Engineering, Iowa State University, Ames, IA, US, Daryl Herzmann, Agronomy, Iowa State University, Ames, IA, Lori J. Abendroth, Cropping Systems and Water Quality Research Unit, USDA ARS, Columbia, MO, US, Warren A Dick, 1680 Madison Ave., Ohio State University, Wooster, OH, US, Nsalambi V. Nkongolo, 1500 Edwards Avenue, va, Bismarck, ND, US, John E. Sawyer, Department of Agronomy, Iowa State University, Ames, IA and Peter Scharf, Division of Plant Sciences, University of Missouri-Columbia, Columbia, MO