The purpose of this study is to evaluate the effectiveness of applying a fungicide, at different times throughout the day, both with and without dew on the leaves.

2018 Iowa Soybean Fungicide Study - Time of Day

The focus of this study was to determine whether or not the presence of dew on soybean leaves plays a role in fungicide yield response. Applying fungicides while dew is still present on a leaf surface can potentially increase the coverage of the fungicide because dew allows the fungicide to spread around the leaf before drying, creating more uniform coverage. In this study, the yield results were very good and we gained over 1 Bu./A. yield advantage with applications made early in the morning. We had very low disease pressure this year at the Iowa PFR site, so it’s likely that the added yield benefit may be more pronounced in years or where leaf coverage and ultimately, disease protection, may be more important to protecting yield.

Pre: 10 oz. Authority® Assist Post: 4.5 oz. Anthem® Maxx, 1 pt. Dual II Magnum®, 29 oz. Liberty® | 

2021 Iowa Soybean SINGULATION STUDY 15 IN. ROWS

2021 Iowa Soybean STARTER FERTILIZER STUDY 2X2X2

Fungicide Study

2018 Iowa Soybean Fungicide Study - Time Of Day

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