1. Science and Technologies for Phosphorus Sustainability (STEPS) Center, Raleigh, NC 27606, USA
2. Department of Plant and Environmental Sciences, Clemson University, Clemson, SC 29634, USA
3. Department of Agricultural Sciences, Clemson University, Clemson, SC 29634, USA
4. Department of Soil, Water & Ecosystem Sciences, University of Florida, Gainesville, FL 32611, USA
5. Department of Environmental Engineering and Earth Sciences, Clemson University, Clemson, SC 29634, USA