2018
Managing frogeye leaf spot of soybean with foliar fungicides and resistant varieties (Year 2)
Home
Contributor/Checkoff:
Kentucky Soybean Promotion Board
Category:
Sustainable Production
Keywords:
Crop protectionDiseaseField management
Parent Project:
Managing frogeye leafspot of soybeans with foliar fungicides adn resistant varieties
Lead Principal Investigator:
Carl Bradley, University of Kentucky
Co-Principal Investigators:
Project Code:
Contributing Organization (Checkoff):
Kentucky Soybean Promotion Board
$22,750
Institution Funded:
Kentucky Soybean Board
$22,750
Brief Project Summary:

This will be the second year of a project that was conducted in 2016, and an additional year of this research is important to confirm the results found in 2016. This research will be conducted across eight locations in Kentucky (in collaboration with the UK Soybean Variety Performance Tests). Varieties that differ in their susceptibility to frogeye leaf spot (susceptible, mod-resistant, and resistant) will be planted. A strobilurin fungicide product and a triazole + strobilurin fungicide product will be evaluated and compared to a non-treated control. At each location, this research will be conducted on: MG III varieties; MG IV varieties; and MG V varieties. Disease severity and yield data...

Unique Keywords:
#soybean diseases
Information And Results
Project Deliverables

The predicted outcome is that foliar fungicides will only provide a yield benefit to the varieties that are susceptible to frogeye leaf spot, and perhaps those that are moderately-resistant to frogeye leaf spot. For profitability purposes, yield potential of each variety will play a large role – i.e., if a susceptible variety has a larger yield potential than a resistant variety, then it could be more “profitable” to grow the susceptible variety and spray it with an effective fungicide vs. planting the resistant variety with no fungicide (or vice-versa). Since this project will rely on “natural” disease pressure and rainfall, it is possible that disease pressure could be limited in some locations. Based on the level of frogeye leaf spot severity at many of the UK Soybean Variety Performance Tests in the 2016 season, the potential for frogeye leaf spot to occur at these locations is good.

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.