Kathryn Hofmeister, Michigan Technological University, School of Forest Resrouces and Environmental Science, Houghton, MI, United States, Robert Lerch, Cropping Systems and Water Quality Research Unit, USDA Agricultural Research Service, Columbia, MO, United States, John Yang, Lincoln University of Missouri, Jefferson City, MO, United States and Fengjing Liu, Michigan Technological University, School of Forest Resources and Environmental Sciences, Houghton, MI, United States