Insect Alert For

Corn Rootworm

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

Corn rootworm beetle populations continue to both be present in fields and are also still emerging (especially in the northern corn-growing region) with some pressure being noted in some areas. Growers are encouraged to regularly scout those most vulnerable fields for potential treatment but also to determine the location of beetle populations as higher beetle counts may signify a need for a change in crop planting decisions for next year. Fields in the more intensive corn acreage regions continue in the High risk level for the next week, including portions of Kansas, Nebraska, South and North Dakota, Minnesota, Iowa, Missouri, Illinois, Wisconsin, Indiana, Ohio, lower Michigan, and into southern Ontario, Canada. Moderate risks are found in these same states in more fringe or lower acreage regions, and also into northeast and eastern Colorado. Some reduction in pressure is possible in the most southern acreage regions based on crop progress, but growers should still continue scouting efforts even in these areas for potential planning adjustments for next year, especially if beetle populations are or were locally high.