While there are traits and products to help you protect your corn crops against corn rootworm, you still need to manage against the pest and that means knowing about larvae and adult beetle populations in your fields. According to experts from DuPont Pioneer, scouting corn fields to keep tabs on rootworm populations is essential to protecting your corn crop against rootworm damage.
“Wet soils and cooler temps challenged the growth of corn early this year. These conditions may have also controlled early-hatching larvae by reducing their food source and saturating the soils,” says Clint Pilcher, DuPont Pioneer insect resistance management expert. “Regardless, growers should still scout their fields to check on the effectiveness of their control program and plan accordingly if they have severe problems.”
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The goal is to break the rootworm cycle and manage the population. Options for corn rootworm include rotating crops, alternating traits or stacks within planted corn hybrids, enhancing control with insecticide seed treatments and soil-applied insecticides, or spraying adult beetles during silking.