The problem is compounded in the northern Corn Belt, where there are large populations of northern corn rootworm and the more destructive western corn rootworm is showing some resistance.
As you look at insect challenges you faced last year, I urge you to take preventative measures to control corn rootworm because once corn is planted, postemergence applications cannot stop larvae from feeding on roots.
Plant soybeans and other crops when possible to break up corn-on-corn rotations.
Corn farmers should choose hybrids that feature two traits for maximum corn rootworm control.
Many farmers have become accustomed to getting by using half-rates of insecticide. To stand a chance at controlling corn rootworm, make in-furrow insecticide applications using the full rate.
Begin scouting for corn rootworm beetles at tassel and continue through early August. Timely foliar insecticide applications will prevent beetles from laying eggs and reduce populations the following year.
Western corn rootworm is known to lay eggs in soybean fields, posing a threat to corn crops the following year. Removing its food source prevents larvae from maturing and continuing the cycle.
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