Project Details:

Determining Soybean Yield Impact from Foliar Nutrient Feeding

Parent Project: This is the first year of this project.
Checkoff Organization:North Carolina Soybean Producers Association
Categories:Soil fertility
Organization Project Code:19-142
Project Year:2019
Lead Principal Investigator:Rachel Vann (North Carolina State University)
Co-Principal Investigators:

Contributing Organizations

Funding Institutions

Information and Results

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Project Summary

Through interacting with County Extension Agents and growers across the state this summer, it is evident that many growers are using foliar nutrients to feed their soybeans. What is unknown is how these products impact soybean yield in North Carolina across our various soil types with drastically different nutrient supplying capacities. Various products and ideal application timing to maximize soybean yield requires investigation. Studies will be conducted to assess the value of foliar feeding soybeans across various regions in North Carolina (Blacklands, Coastal Plain, Piedmont). Grower feedback is solicited on the most impactful nutrients/products with which to concentrate our efforts. Results will be disseminated to various North Carolina stakeholders at grower meetings, field days, via electronic media, and through extension publications.

Project Objectives

1. Identify the most effective foliar nutrient products for maximizing soybean yield

2. Determine ideal application timing for various foliar nutrient products

3. Conduct economic analyses on the value of these products for maximizing soybean yield 4. Extend results to County Extension Agents, soybean producers, and other soybean stakeholders throughout North Carolina

Project Deliverables

Progress of Work

Final Project Results

Many soybean growers are interested in the use of foliar fertilizers, and multitudes of products are marketed to growers. Growers often use these products while applying fungicides and/or insecticides during early soybean reproductive development. However, with low profit margins, the effect of foliar fertilizers on soybean yield and economic return is important to understand. In 2019, 12 states evaluated various foliar fertilizer products applied at soybean growth stage R3 in 18environments. We evaluated these products in three NC environments in 2019. There was no impact on soybean yield from the application of any foliar fertilizer productat R3inour NC environments. This was consistent with results from >94% of US research locations in 2019. Our initial results indicate that with the current narrow profit margins for soybeans, growers can invest in something more impactful to yield than a foliar fertilizer application at R3.

Benefit to Soybean Farmers

Performance Metrics

Project Years