2018
Bioavailability of Runoff Particulate P
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Contributor/Checkoff:
Ohio Soybean Council
Category:
Sustainable Production
Keywords:
Abiotic stressAgricultureLand Use Water supply
Parent Project:
This is the first year of this project.
Lead Principal Investigator:
Libby Dayton, The Ohio State University
Co-Principal Investigators:
Project Code:
18-R-36
Contributing Organization (Checkoff):
Ohio Soybean Council
$23,340
Institution Funded:
The Ohio State University
$23,340
Brief Project Summary:

This project links soil algal-bioavailable phosphorus to erosion, edge-of-field runoff suspended sediment and runoff particulate-bound P. The hypothesis is that P forms associated with freshly eroded soil particles at the edge-of-field are different than suspended sediment P forms in rivers due to dissolution and reduction reactions that begin as soil particles and are transported to drainage ways, tributaries and rivers. Knowing P bioavailability runoff helps truly evaluate risk. Research measures P bioavailability in field soils vulnerable to erosion, evaluates the relationship between bioavailable P and soil P measures. It also estimates the bioavailability of runoff particulate P across Ohio, using these relationships with simulations and soil test P survey data.

Key Benefactors:
farmers, agronomists, extension agents

Information And Results
Project Deliverables

Presentations, fact sheets and other educational materials from this work will play an important role in illustrating more exactly the magnitude of risk posed by soil erosion into Ohio waterways. This information should help with individual farmer management decisions.
All soil selection, preparation and extractions
Evaluate/develop regression equations to estimate P bioavailability
Use predictive equations in conjunction with On-Field Ohio! simulations and soil test lab data set to estimate bioavailability of runoff particulate P regionally and across Ohio under varying crop management scenarios.
Develop a final report, and educational/outreach materials including presentations, fact sheets and posters

Final Project Results

Update:
see attached pdf

View uploaded report PDF file

View uploaded report 2 PDF file

The United Soybean Research Retention policy will display final reports with the project once completed but working files will be purged after three years. And financial information after seven years. All pertinent information is in the final report or if you want more information, please contact the project lead at your state soybean organization or principal investigator listed on the project.