Des Moines and Henry County field trials of corn rootworm beetle traps
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Damage caused by corn rootworms consistently decreases yields throughout the Corn Belt. Chemical treatment of rootworms can reduce damage and increase yields. However, excessive chemical treatment for corn insects poses a threat to the quality of Iowa's soil and water supply. An estimated 98% of the cornon-corn ground in Des Moines and Henry Counties—where this project was located—is chemically treated for corn rootworms.