The On-Field Ohio phosphorus risk tool was developed by The Ohio State University, under a USDA NRCS Conservation Innovation Grant program (award #69-3A75-12-231) "Evaluating/updating the Ohio phosphorus risk index using field-scale, edge-of-field monitoring data".
Additional Project Sponsors:
The Ohio Soybean Council, Ohio Small Grain Marketing Program, Ohio Corn and Wheat Growers Association, The Andersons Inc. Endowment, The Andersons Inc. Charitable Foundation, The Ohio Farm Bureau, Ohio Agribusiness Association, DuPont Pioneer Community Betterment Grant, Schlessman Hybrids, Nachurs Alpine Solutions, United Soybean Board, Luckey Farmers Inc., Trupointe Cooperative, and Deerfield Farms.
The On-Field Ohio phosphorus risk tool is a web based program that does not require downloading of external databases. Field specific information entered into the program is not stored on the site's server and therefore can only be saved by the user. The area of interest (field) selection uses a Google Maps interface that links to the USDA NRCS gridded Soil Survey Geographic Database to identify the dominant soil map unit in the area of interest. The dominant map unit is utilized by the RomeSDK version 18.104.22.168 library of RUSLE2 along with user inputs to generate an estimate of soil erosion. Surface particulate runoff phosphorus as well as additional phosphorus runoff risk due to fertilizer and manure application estimates are modeled after the USDA ARS Annual Phosphorus Loss Estimator (APLE) calculations calibrated to local conditions using field-scale edge-of-field runoff monitoring, farmer management and soil data. Surface dissolved P, tile dissolved and particulate P runoff losses are calculated from empirical equations derived from the edge-of-field runoff monitoring data. For more details, please refer to the user guide and supporting documentation.
On-Field Ohio depends on: