Corn Rootworm
Initial corn rootworm hatch risks will continue to spread north in response to increasing heat unit accumulations and warmer days. Hatches should continue to be scattered in nature, however, given recent heavy rains in the risk area so the overall risk level is being kept in the Moderate category for now. Moderate risks extend from Kansas into far southeast Nebraska, Missouri, far southern Iowa, central and southern Illinois, and east into much of Indiana, and western/central Ohio. The risk area will expand north to include more of Nebraska, Iowa, Illinois, and also portions of southern lower Michigan by mid-late week. Growers in and near the risk area should consider monitoring more advanced corn and soybean fields and also prepare to dig up roots in the next several weeks to determine if corn rootworm populations are present and take appropriate action where warranted.