Time to start scouting for corn rootworms

Time to start scouting for corn rootworms

Corn rootworms (CRW) are one of the most important insect pests of corn in the Midwest with the potential to cause significant yield losses and increase lodging. A compilation of field research trials suggests that around a 15 percent yield reduction can occur for each nodal root consumed by CRW larvae.

CRW development is driven by soil temperatures and is measured in degree days. Fifty percent CRW egg hatch occurs between 684 and 767...

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