Insect Alert For

Corn Rootworm

Risk Level:
High Risk Level
Affected Area:
Full page
Alert Details

High corn rootworm hatch risks continue in the forecast for the remainder of the week and into the weekend across much of Kansas, southeast Nebraska, Missouri, central and southern Iowa, Illinois, far southern Wisconsin, Indiana, Ohio, and into southern lower Michigan. Growers located in or near the risk area that have newly emerged corn should scout fields by digging up roots and determining if corn rootworm larvae are present. It is encouraged to dig up corn roots not only in traditional corn fields but also any volunteer corn in soybean fields as it will be important to determine populations in those fields, as well. Corn rootworm pressure is expected to be variable this year especially given heavy to excessive rainfall which may limit pressure in fields with standing water as newly hatched corn rootworm may drown in such a situation. Higher elevation and/or more tiled fields with better drainage would be of more concern this year.