2016
Nitrogen & Sulfur Trial
Category:
Sustainable Production
Keywords:
GeneticsGenomicsSeed quality
Parent Project:
This is the first year of this project.
Lead Principal Investigator:
Katherine Drake Stowe, US Soybean Research Collaborative
Co-Principal Investigators:
Project Code:
P16-021
Contributing Organization (Checkoff):
Institution Funded:
Brief Project Summary:

There have been reports of soybean yield gains as a result of applications of 30 to 50 pounds of nitrogen per acre. The objective of this study is to evaluate any potential benefits to pre-plant and/or in-season applications of AMS, urea or ProGyp to full-season and double-crop soybeans in North Carolina.

Key Benefactors:
farmers, agronomists, extension agents

Information And Results
Project Deliverables

Final Project Results

When compared with the untreated check, in both early and late production scenarios, treatment application had little to no effect on stand, color, moisture, test weight, and yield. More specifically, no statistical improvements in yield were observed as a result of any treatment applied in this study. However, a potential economic benefit was observed following a pre-plant application of ProGyp at 200 lb./a in a full-season production scenario. In this case, a numerical two bushel per acre increase over the UTC coupled with a relatively inexpensive material cost, led to a $15.60 advantage in net income. In the double-crop soybean trial, all fertilizer application treatments resulted in a net loss when compared to the UTC, but the same trend was observed regarding a full rate of ProGyp applied pre-plant. In this trial, 200 lb./a ProGyp applied pre-plant was the least detrimental to the bottom line compared to all other treatments. Interestingly, in the full-season soybean experiment, two out of five locations showed a slight numerical advantage in yield when urea was split-applied compared with urea applied up-front (TAG: +5.4bu/a; FCC: + 4.8bu/a), which may give reason to pursue this type of research further.

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.