The purpose of this study is to evaluate the timing of cover crop termination and its effect on crop emergence and establishment, yield, and profitability.

2017 Central Illinois Corn Cover Crop Termination Study

The mild winter we had in 2017 resulted in an abnormal amount of growth in our cover crop studies. With a nearly ideal carbon-to-nitrogen ratio of 20.5:1, we did not expect to see significant nitrogen tie-up with annual ryegrass. We theorize that terminating the cover crops prior to planting was beneficial due to its early start to r esidue decomposition. This resulted in warmer, drier soil conditions early in the season.

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

*®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

Cover Crop Termination Study

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