The purpose of this study is to evaluate the use of Thio-Sul® in a sidedress application at the V6 growth stage, in an attempt to increase nitrogen (N) use efficiency, plant health, yield and profitability.

Lower power plant emissions have resulted in a reduction in the atmospheric deposition of sulfur (S) throughout the Midwest, which has led us to start adding sulfur to our sidedress N applications. Similar to N, in-season applications of S make sense due to its mobility in the soil and later uptake of S in corn. This year, we experienced dry weather before and after this sidedress application. Then, we only received two rainfall events in the month of July. When the plants needed S and N the most, the dry conditions may have limited movement and availability of both nutrients.

 Fall: Vertical-Till/In-Line Rip, Spring: Vertical-Till | 

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

*®XL, Optimum, and AcreMax are registered trademarks of Pioneer. XL® brand seed is distributed by Beck’s Superior Hybrids, Inc.

2021 Iowa Corn Thin Stand Management Study - Fungicide Response

2021 Iowa Corn Sulfur Rate & Timing Study

Sulfur Study

2017 Southern Illinois Corn Sulfur Study

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