The purpose of this study is to evaluate the use of different fungicides, applied at the Feekes 8 growth stage, and their effects on yield and profitability.

2018 Multi-Location Wheat Fungicide Study

Feekes 8, or flag leaf emergence, is a critical stage in determining overall wheat yield. The flag leaf stage is significant because the flag leaf produces an enormous amount (approximately 75 percent) of the photosynthates necessary for grain fill. Protecting the flag leaf from disease and insects is critical. With unseasonably low humidity levels, we observed very little disease pressure in late April and May. As a result, flag leaf health was not significantly impacted by our fungicide treatments at this growth stage, resulting in a minimal yield bump and a negative return on investment.

2021 Iowa Organic Soybean Fungicide & Insecticide Study - In-Furrow

2021 Iowa Soybean FUNGICIDE STUDY CARRIER RATE

Wheat Fungicide Study

2018 Multi-location Wheat Fungicide Study

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