Fusarium head blight of wheat

Tar spot of corn

White mold of soybean

Organic Grains Integrated Disease Management (IDM) Toolbox

Research Team:

PI: Darcy Telenko, Purdue University

Co-PIs: Damon Smith and Erin Silva, University of Wisconsin-Madison

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Fusarium Head Blight of Wheat

Research question: Are there current varieties and OMRI products available that can minimize FHB in organic wheat?

Wheat trials were established the preceding fall for implementation in the spring in Indiana and Wisconsin. Two modern organic wheat varieties and at least four OMRI approved products will be evaluated.

 

Tar Spot of Corn

Research question: Do OMRI approved foliar
fungicides show efficacy against tar spot of corn?

Corn trials evaluated at least four OMRI products for tar spot in Indiana and Wisconsin. Initial treatments will occur based on disease scouting, crop growth stage, and Tarspotter, a tar spot disease forecasting app, with application targeted at tassel or flowering and applied once or twice during the growing season.

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White Mold of Soybean

Research questions: Can an integrated approach provide adequate white mold control in organic soybean?

Trials were established in fields with a history of white mold. A rye cover crop was established the preceding fall for implementation of tillage in the spring. Tillage treatments will include tilled and no-tilled with rye roller-crimped. Two soybean varieties will be planted. OMRI approved foliar fungicide treatments were applied based on Sporecaster App during soybean flowering from R1 to R4 to predict the optimum timing for white mold treatment.

Publication: Debbink, K., Rocco da Silva, C.†, Silva, E. M., Mueller, B. D., Telenko, D. E. P., and Smith, D. L. 2024. Integrated management of Sclerotinia stem rot of soybean including organically-allowed fungicides in the Midwest United States. PhytoFrontiers. 25 Sep 2024 https://doi.org/10.1094/PHYTOFR-05-24-0053-R. 

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