**About the Editors**

**Donald S. Ross** (Emeritus Research Professor) worked for 40 years at the University of Vermont as a technician, laboratory director and faculty member. He directed the Environmental Sciences Program for the College of Agriculture and Life Sciences and oversaw Vermont's soil fertility testing program. In addition to teaching in both Environmental Sciences and Soils, Ross conducted research on a wide variety of soil problems including riparian corridor phosphorus dynamics, hydropedology, forest soil monitoring, cation exchange in acidic forest soils, nitrification, earthworm effects on forest soil carbon, mercury dynamics at high elevation, and manganese biogeochemistry.

**Eric O. Young** grew up on a dairy farm in central New York and has over twenty years of experience in nutrient management research and outreach. A main research theme is evaluating agronomic and environmental practice effects on water (overland and subsurface flows) and soil quality in cold climate agroecosystems. Prior to joining USDA-ARS in 2018 as a Research Soil Scientist, Eric was a Research Agronomist for nine years at the William H. Miner Agricultural Research Institute focusing mainly on nitrogen and phosphorus loss in tile-drained systems.

**Deb P. Jaisi** has been an associate professor of Environmental Biogeochemistry at the University of Delaware since 2011. He was an Interdepartmental Batemen Scholar at Yale University and NSF Fellow at California Institute of Technology. He is a founding co-director of the Environmental Isotope Science (EIS) Center at UD. His research focuses on the biogeochemical processes revolving around phosphorus under three axes- phosphorus as an essential nutrient for all living beings, phosphorus as a contaminant to open waters, and phosphorus as a biocidal agent, at various scales, from molecular to ecosystem-scale processes.
