Study Finds Sweet Corn Yields Drop with Extreme Heat

Nov 28, 2022

A study published by University of Illinois researchers found that sweet corn yields drop significantly in rainfed fields as a result of extreme heat during flowering. With 20 to 30 more days of extreme heat predicted per summer by mid-century in the Midwest, researchers predict that growing sweet corn is likely to become much more difficult. “The reality is that producing sweet corn, one of the most popular vegetable crops in the U.S., will be more difficult in the future. We need to develop new approaches and technologies to help crops adapt to climate change,” says lead study author Daljeet Dhaliwal.

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Video: Wisconsin Corn and Soybean Weed Management Updates and Considerations for 2026 and Beyond

Dr. Rodrigo Werle, associate professor and extension weed scientist, UW–Madison, shares the latest updates and future considerations for corn and soybean weed management in Wisconsin. This presentation covers herbicide resistance trends in waterhemp, including newly confirmed cases of HPPD and S-metolachlor resistance, and emphasizes the importance of residual herbicides and strategic tank mixes for consistent control. Rodrigo also introduces upcoming technologies like Vyconic soybeans and new herbicide products, discusses integrated weed management strategies such as planting green with cover crops, and highlights practical recommendations for 2026 and beyond.

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