2020
Time of disease onset as an early indicator of soybean resistance to SDS
Contributor/Checkoff:
Category:
Sustainable Production
Keywords:
Crop protectionDiseaseField management
Parent Project:
This is the first year of this project.
Lead Principal Investigator:
Leonor Leandro, Iowa State University
Co-Principal Investigators:
Project Code:
GR-023053-00003
Contributing Organization (Checkoff):
Institution Funded:
Brief Project Summary:

Recently, research found that time of sudden death syndrome foliar symptom onset, i.e. the time when the first SDS foliar symptoms are observed, is strongly correlated with late season SDS severity and soybean yield. These results were obtained from single soybean genotypes planted in commercial and research fields, but suggest that management practices that delay disease onset should be most effective at protecting soybean yield. This projects tests if time of SDS onset can be a useful measure for early screening of soybean genotypes for resistance against SDS. It monitors SDS progress over time in soybean genotypes with varying levels of resistance and determines the correlation between resistance and time of foliar disease onset.

Key Benefactors:
farmers, agronomists, Extension agents

Information And Results
Project Deliverables

New knowledge on the relationship between SDS severity/incidence and soybean yield loss; Information on reliability of disease onset for early and accurate identification of soybean resistance to SDS; Potential use in developing expedited and more accurate resistance screening assays; Potential use in assessing other SDS management tools

Final Project Results

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.