The purpose of this study is to evaluate the yield differences between different tillage practices in a corn after soybean rotation.

Soybeans are a low residue-producing crop, therefore, incorporating residue is not as important as it is with other crops. When managing residue from double crop soybeans, we have to deal with the remaining wheat straw residue, which has a high carbon-to-nitrogen ratio. In general, more nutrients are tied up in the decomposition of wheat residue, resulting in what we refer to as a carbon penalty. By increasing residue incorporation with a chisel plow in the fall and increasing soil-to-residue contact, the time required for decomposition is significantly reduced. Additionally, no-till soil conditions are typically colder and wetter in the spring, making for more challenging conditions for crop establishment.

2-YEAR TILLAGE YIELD AVERAGE IN A CORN AFTER SOYBEAN ROTATION

2-YEAR TILLAGE YIELD AVERAGE IN A CORN/WHEAT/SOYBEAN ROTATION

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

Chisel Plow, Field Cultivator, In-Line Rip, Vertical-Till, No-Till

2021 Iowa Corn Thin Stand Management Study - Fungicide Response

2021 Iowa Corn Sulfur Rate & Timing Study

Tillage Study

2017 Kentucky Corn Tillage Study

Shop