The purpose of this study is to determine what effect different closing wheel types have on plant emergence and yield. unfavorable planting conditions were targeted in this study.

2017 Central Illinois Corn Closing Wheel Study

This study was intentionally planted into wetter than optimal soil conditions in an attempt to draw out any potential differences between closing wheels and their ability to effectively close the seed trench. Little, if any, differences were observed between the emerged populations and Net Effective Plant Stands (NEPS). However, we saw higher yields with the hybrid style of closing wheels compared to the control solid rubber wheel. We hypothesize that the solid wheels may have caused minor amounts of side wall compaction given the less-than-ideal planting conditions, which may have limited root growth and ultimately resulted in lower yields.

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.

Solid Rubbers, Yetter Poly Spikes, Copperhead Ag Furrow Cruiser®, Schaffert Mohawk™, Schlagel Posi-Close, Schaffert Zipper™

2021 Iowa Corn Thin Stand Management Study - Fungicide Response

2021 Iowa Corn Sulfur Rate & Timing Study

Closing Wheel Study

Use whenever the name of a PFR Study mentions Closing Wheel, Downforce, Row Cleaner, Speedtube, Seed Firmer, Disc Opener, and/or 3RIVE