The purpose of this study is to evaluate different application timings of potassium and their impact on yield and profitability.

Potassium (K) is an essential nutrient that plays a major role in plant growth and grain fill. In this study, we tested multiple delivery methods at various timings. Eezy™ K24 was applied through the wings of a FurrowJet™ and the 360 Y-DROP® system. These delivery methods were chosen because K has limited soil mobility and needs to be closer to the root zone for ease of uptake. Even though a yield response was observed with both applications, neither provided a positive return on investment in 2017.

 Pre: 3.5 oz. Corvus®, 1 lb. Atrazine Post: 3 oz. Capreno®, 1 lb. Atrazine | 

 8.5 gal. 32-0-0 2x2, 5 gal. PureGrade® Diamond 6-24-6 In-Furrow | 

Eezy™ K24, FurrowJet™ Wings, 360 Y-DROP®

2021 Iowa Soybean SINGULATION STUDY 15 IN. ROWS

2021 Iowa Soybean STARTER FERTILIZER STUDY 2X2X2

Potassium Timing Study

2017 Iowa Corn Potassium Timing Study

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