2019
Disease Management Equals Higher Yields
Home
Contributor/Checkoff:
Ohio Soybean Council
Category:
Sustainable Production
Keywords:
Crop protectionDiseaseField management
Parent Project:
Disease Management Equals Higher Yields
Lead Principal Investigator:
Anne Dorrance, The Ohio State University
Co-Principal Investigators:
Project Code:
19-R-02
Contributing Organization (Checkoff):
Ohio Soybean Council
$100,000
Institution Funded:
The Ohio State University
$100,000
Brief Project Summary:

Several soybean pathogens have re-emerged as yield robbers in Ohio, primarily due to very wet springs, resistance to fungicide seed treatment and varieties with low levels of resistance. This project aims to identify the best disease management practices for Ohio’s challenging environments and changing pathogen populations. The first goal is identifying resistance to the many pathogens that affect soybean and the markers and genes that define the region in the genome that contribute to trait expression. The second is to identify seed treatment and foliar fungicides with the greatest efficacy towards mitigating losses when disease does develop. The third is to monitor the changing pathogen populations including the adaptation to common fungicides.

Key Benefactors:
farmers, agronomists, extension agents, soybean breeders, seed companies

Information And Results
Project Deliverables

P. sojae; Pythium and Fusarium. Continue the VIGs experiments for potential R-gene sequence and candidate genes for resistance via functional analysis. Continue to use SNP markers for the Illumina 6KSNP chip for high throughput analysis of additional populations segregating for novel Rps genes and QTL. Collect soil from studies of soil factors that influence SDS. Harvest plots and analyze summer data. Complete identification of pathogens from summer/fall surveys. Submit 2 to 3 manuscripts. Continue to evaluate segregating populations for resistance to key Pythium spp.

Second quarter (March 2019): Complete screening of all Ohio Breeders material; screening of populations with novel resistance developed/advanced during summer of 2014 as well as isolate DNA for marker analysis. In addition to Phytophthora sojae, screen populations for resistance to Py. irregulare, Py ultimum and compare responses across isolates. Provide breeders with any new data to facilitate decisions required for new soybean populations. Continue with experiments for functional analysis of candidate genes.

Third quarter (June 2019): Initiate summer field studies for disease management, begin to increase germplasm with novel resistance genes that require further analysis, evaluate yield effects for specific QTL, increase selected germplasm for studies. Monitor disease development throughout the state, collect isolates for further studies.

Fourth quarter (September 2019) – Collect and summarize summer field data, continue screening and fine mapping of resistance genes; begin writing reports; present results at APS meeting to be held in Cleveland!

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.