Insect Alert For

Black Cutworm

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

Remnants of Tropical Storm Cristobal are expected to move north from Missouri into far eastern Iowa and eventually the northern Great Lakes/Canada by tonight into tomorrow. The system will merge with a low pressure/cold front combination currently moving through the Plains/western Midwest and then accelerate northeast. Southerly winds east of the cold front and low pressure systems may lead to scattered black cutworm moth flights especially into far northeast/eastern Wisconsin and portions of lower Michigan as well as southern Ontario, Canada. Moderate risks are in place in this area mainly for the concern that planting was generally later and/or where the need for re-planting is higher. Flights that occur now may affect newly emerged corn later this month, thus a higher risk. Low risks extend roughly along/north of I-80 from the Mississippi River east into the southern Great Lakes to account for a lesser, yet non-zero risk further south. Little to no additional migration risk is predicted after midday tomorrow, but growers with newly emerged corn that is prior to the five leaf stage of growth should continue scouting as some black cutworm damage has been reported in some areas this spring.