Narrowing the Yield Gap for Corn Production
Dr. Jeff Coulter
University of Minnesota
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With high corn yields recently reported by yield contest participants, there is strong interest among growers to adopt agronomic practices that increase yield. In this presentation, numerous agronomic factors were evaluated for their potential to increase corn yield in different situations. Prerequisites for high corn yield include management of pests and soil fertility, so consequently these factors were not covered in this presentation. A review of recent research from across the Corn Belt indicates that decisions related to hybrid selection, crop rotation, tillage system, and stand establishment have the greatest potential for increasing yield. In contrast, decisions related to planting date, plant population, and row spacing have been shown to have a relatively low potential for increasing corn yield when compared to current grower practices. This presentation will help growers and agronomists recognize key opportunities for increasing corn yield within their cropping systems.
After the Webcast: More information for corn growers is available at www.extension.umn.edu/corn.
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