Kees Jan Van Groenigen, NAU, Flagstaff, AZ, Chris van Kessel, University of California-Davis, Davis, CA, Cameron Pittelkow, Crop Sciences, University of Illionois, Urbana, IL, Bruce Linquist, Plant Sciences, UC Davis, Davis, CA, Johan Six, Department of Environmental Systems Science, ETH, Zurich, Switzerland, Rodney T. Venterea, Department of Soil Water and Climate, University of Minnesota, St. Paul, MN, Juhwan Lee, ETHZ, Zurich, Switzerland, Mark Lundy, UC Agriculture and Natural Resources, Colusa, CA, Xinqiang Liang, Zhejiang University, Hangzhou, China and Natasja van Gestel, Northern Arizona University, Flagstaff, AZ