Insect Alert For

Corn Rootworm

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

Corn rootworm risks remain in place across a large portion of the corn-growing region as adult beetle emergence and feeding continues in scattered areas. The greatest pressure at this time is focused primarily north of I-80 as corn crops further to the south advance past critical growth stages. Still, late or re-planted fields all across the corn-growing region are at risk. Growers from eastern Colorado into Kansas, Nebraska, South and North Dakota, Minnesota, Iowa, northern Missouri, central and northern Illinois, Wisconsin, Michigan, Indiana, Ohio, and southern Ontario, Canada should continue to monitor beetle populations as some problems have been observed on at least a scattered basis. Beetle counts and economic thresholds should be monitored closely and, if necessary, treatment and changes to planting habits may be needed next growing season.