Chad Penn, Greg Bell, Jason Warren, and Josh McGrath

Dr. Chad Penn, associate professor, soil and environmental chemistry, Department of Plant and Soil Sciences, Oklahoma State University. Dr. Greg Bell, Huffine Endowed Professor of Turfgrass Science, Department of Horticulture and Landscape Architecture, Oklahoma State University. Dr. Jason Warren, assistant professor, soil and water conservation, Department of Plant and Soil Sciences, Oklahoma State University. Dr. Josh McGrath, assistant professor, Department of Environmental Science & Technology, University of Maryland.