Amy L. Shober, 531 S College Ave, University of Delaware, Newark, DE, US, Anthony R. Buda, Pasture Systems & Watershed Mgmt Research Unit, USDA-ARS, University Park, PA, Kathryn Clark, Plant and Soil Sciences 152 Townsend Hall, University of Delaware, Newark, DE, Amy S. Collick, Department of Agriculture, Food and Resource Sciences, University of Maryland Eastern Shore, Princess Anne, MD, Judy Robinson, Earth and Environmental Sciences, Rutgers University-Newark, Newark, NJ, A. Scott Andres, University of Delaware, Newark, DE, Lee Slater, Earth and Environmental Sciences, Rutgers University, Newark, NJ, Dimitrios Ntarlagiannis, Department of Earth & Environmental Sciences, Rutgers Universtity Newark, Newark, NJ, J. Thomas Sims, Plant and Soil Sciences, University of Delaware, Newark, DE and Arthur L. Allen, Crop and Aquaculture Bldg, University of Maryland Eastern Shore, Princess Anne, MD