Project Details:

Comparison of Fertilizer Placement Methods Yr 2

Parent Project: Comparison of Fertilizer Placement Methods
Checkoff Organization:Ohio Soybean Council
Categories:Water quality & management, Soil and tillage management, Environmental stress
Organization Project Code:17-R-14
Project Year:2017
Lead Principal Investigator:Libby Dayton (The Ohio State University)
Co-Principal Investigators:

Contributing Organizations

Funding Institutions

Information and Results

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Project Summary

Fertilizer placement method is an important parameter in The Ohio P Risk Index. The proposed work is intended to be complementary and to accelerate the evaluation/revision of weighting/scoring of fertilizer placement method in the Ohio P Risk Index, which will contribute to the ongoing effort of On-Field Ohio!

Project Objectives

Evaluate differences in surface runoff of phosphorus (P), nitrogen (N) and sediment based on fertilizer placement methods across varying P sources (fertilizer/manure, liquid/dry) and levels of residue cover.

Project Deliverables

The project will be evaluated by tracking and reporting the 1) number of runoff plots run, 2) types and combinations of independent variables evaluated, 3) results of final statistical analysis comparing fertilizer placement methods, 4) Revision of fertilizer placement method factor in Ohio P Index. The project participants will schedule quarterly meetings to review project objectives and timelines, discuss progress, and plan upcoming activities.

Progress of Work

Final Project Results

Updated March 25, 2019:
All Yr 2 work and analyses are complete for P, N, & suspended sediments. We had hoped to add 1 more field treatment this fall (yr3) however due to personnel shortage, weather and the fact that they still haven't harvested we will not be doing field work this fall. We may try to revisit this in the spring, prior to planting and I will dicuss with Harold. Data from this work was instrumental in revising Ohio P Index fertilizer/manure application methods.

Benefit to Soybean Farmers

With increased concern about the degradation of surface water, Ohio agriculture and especially Ohio animal agriculture is being targeted. A robust functioning Ohio P Index will provide a defense against attacks, while sustaining agricultural productivity and protecting surface water quality. Ensuring that nutrient management plans are scientifically valid and sufficiently protective of surface water quality, demonstrates good stewardship by the agricultural community. Fertilizer placement method is an integral part of the Ohio P Index and therefore nutrient management plans. Understanding how to mitigate the runoff risk associated with fertilizer/manure applications will facilitate farmer management decisions. It is important to be able to accurately evaluate the risk of P runoff and provide management alternatives to mitigate runoff risk.

Performance Metrics

Project Years