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Planning could lessen impact of urban sprawl

Pick any state and you are likely to find examples of urban sprawl, where farmland is being converted into subdivisions and industry.

And those examples are not just found around large metropolitan areas such as Kansas City, Chicago, St. Louis and Des Moines. Ag land is disappearing around other growing cities throughout the Midwest.

A report written in 2022 from the American Farmland Trust suggests this trend is likely to continue. In the report, the organization said from 2001 to 2016, the U.S. lost or compromised 2,000 acres of farmland every day. If the trend continues, another 18.4 million acres will be converted between 2016 and 2040. That is roughly the size of the state of South Carolina.

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Dr. Fei Yang Discusses Corn Rootworm, European Corn Borer, and Pest Monitoring

Video: Dr. Fei Yang Discusses Corn Rootworm, European Corn Borer, and Pest Monitoring

What insect threats are Minnesota corn growers facing, and what research is helping farmers stay ahead of them?

At the 2026 MN Ag Expo, University of Minnesota entomologist Fei Yang shared updates on three Minnesota Corn-supported research projects focused on insect monitoring, seed treatments, and pest resistance.

Current work includes statewide monitoring programs that use pheromone, light, and sticky traps to track key pests such as black cutworm, true armyworm, corn earworm, European corn borer, and corn rootworm. Researchers are also evaluating whether high-rate seed treatments provide effective corn rootworm control and studying the development of resistance in European corn borer populations to Bt corn traits.

These projects help researchers better understand pest pressures across Minnesota and provide farmers with practical information to support informed management decisions.