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2020
How Does Management Increase Soybean Seed Protein? A Mechanistic Approach to Identifying Limitations and Opportunities
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Contributor/Checkoff:
United Soybean Board
Category:
Sustainable Production
Keywords:
Parent Project:
This is the first year of this project.
Lead Principal Investigator:
Montserrat Salmeron, University of Kentucky
Co-Principal Investigators:
Project Code:
2020-152-0110
Contributing Organization (Checkoff):
United Soybean Board
$223,565
Institution Funded:
University of Kentucky
$223,565
Brief Project Summary:
Information And Results
Project Summary

Project Objectives

Project Deliverables

Progress Of Work

Updated January 24, 2021:
March 15, 2020 Report
Late-season nitrogen fertilizer applications after R5 increased seed protein concentration, supporting our hypothesis that N availability during seed fill is partially limiting protein concentration, and this may be palliated with management practices. Preliminary analysis by NIRs in harvest seed showed a significant effect of N fertilizer applications on some amino acids and fatty acids. Further analysis of seed composition by reverse phase HPLC and gas chromatography is underway. Results from aerial phenotyping of the crop N status was summarized in the report. The association between canopy greenness measured from aerial images and measured shoot N concentration suggests that aerial phenotyping may be used to assess crop N status in soybean fields.

Updated January 24, 2021:
September 15, 2020 Report
The results from a source sink manipulation study reveal that actual soybean seed size are always below the maximum achievable, but that seed growth can response to increases in assimilate supply up to the end of the seed fill phase to reduce this gap. Findings from this study have important implications that emphasize the importance of late-season soybean management recommendations. Results were summarized in a manuscript that will be submitted to a peer-reviewed journal. Sample processing from 2019 trials was delayed due to Covid, but it is now completed, and plant tissue and seed composition analyses will be completed in the next weeks. Field trials from the 2020 season are carried out according to plan, and include frequent data collection with aerial imaging at each location. Harvest of early cultivar maturities is expected to start this month.

Final Project Results

Benefit To Soybean Farmers

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.