William J. Beck1, Thomas M. Isenhart2, John L. Kovar3, Peter L. Moore1, Suroso Rahutomo4, Keith Schilling5, Richard C. Schultz1, Michael L. Thompson6 and Mark D. Tomer7, (1)Natural Resource Ecology and Management, Iowa State University, Ames, IA, (2)Natural Resources Ecology and Management, Iowa State University, Ames, IA, (3)1015 North University Blvd., USDA-ARS National Laboratory for Agriculture and the Environment, Ames, IA, (4)Indonesian Oil Palm Research Institute, Medan, Indonesia, (5)University of Iowa, Iowa City, IA, (6)Agronomy Department, Iowa State University, Ames, IA, US, (7)USDA-ARS National Laboratory for Agriculture and the Environment, Ames, IA