Corn Rootworm IV: Extended Diapause in Northern Corn Rootworm

Populations of northern CRW in some areas of SD, IA and MN have adapted to crop rotation, resulting in damage to corn following soybeans, a phenomenon referred to as extended diapause. Studies and observations indicate that the problem is expanding. Management options for CRW in extended diapause areas have included longer rotations and soil insecticides. Pioneer® brand hybrids with Poncho® 1250 seed-applied insecticide provide another option in low to moderate risk areas.

This Crop Insights discusses CRW biology and damage, history of extended diapause, predicting where outbreaks will occur, and management strategies to counter this problem.

To view the full text of this article, register on the Pioneer GrowingPoint® website and search for the title shown above.