2020
Evaluating sulfur products and timing in soybeans by management zones
Home
Contributor/Checkoff:
Michigan Soybean Promotion Committee
Category:
Sustainable Production
Keywords:
Field management
Parent Project:
Evaluating sulfur products and timing in soybeans by management zones
Lead Principal Investigator:
Missy Bauer, B&M Crop Consulting
Co-Principal Investigators:
Project Code:
2016
Contributing Organization (Checkoff):
Michigan Soybean Promotion Committee
$21,000
Institution Funded:
B&M Crop Consulting
$21,000
Brief Project Summary:

In recent years atmospheric sulfur deposition has been dramatically reduced due to reductions in power plant sulfur emissions. The lack of atmospheric deposition has also reduced soil test levels of sulfur. Based on soil test data from B&M Crop Consulting most soil test levels are half the ppm they were in 2005. Many soils now have less than 10 ppm of sulfur. Despite the reductions in deposition and soil test levels, the need for sulfur in a soybean plant has increased as yields have increased. Removal has far exceeded deposition, which has also led to reduced soil test levels and a potential deficiency in the plant. Sulfur fertilizer may now be needed for soybeans to make up the difference...

Unique Keywords:
#soybean utilization
Information And Results
Final Project Results

Update:

View uploaded report PDF file

In summary, based on 2019 and 2020 plot data, an in-season V3 sulfur application would be recommended for sandy loam soybean fields in Michigan. The six fields in this study had an average total exchange capacity (TEC) of 7.6 and an average organic matter of 2.0%. If a field is receiving sulfur with the normal dry fertilizer blend in the spring additional in-season sulfur would not be recommended. Unless it was applied VRA only on the management zones with the lower organic matter, lower cec, and single digit sulfur numbers. A third year of plots would help to confirm this as well as provide better data on the K-Mag product.

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.