Midwestern field trials suggest overuse of rootworm-resistant corn reduces farmers' profits

Earth & Climate News -- ScienceDaily · last updated March 2, 2025 – 4:14 PM

An analysis of data covering 12 years and 10 U.S. Corn Belt states reveals that farmers suffer economic loss from the over-application of genetically engineered corn designed to combat rootworm pests. Entomologist documented greater rootworm pest pressure in the western Corn Belt states of Illinois, Iowa, Minnesota, Nebraska, North Dakota, South Dakota and Wisconsin. In these states, farmers commonly plant corn continuously.

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