Corn Insect Update (Aphids, etc.)

Author: Scott Stewart, IPM Extension Specialist Comments Off on Corn Insect Update (Aphids, etc.)

There is nothing of great concern going on, but I wanted to mention one thing I am getting some calls about. Corn leaf aphids are being found on seedling corn, more than likely moving from weedy grasses that were in the field. This is nothing to get too excited about. It is unlikely these infestations will hurt yield. It does suggest that insecticide seed treatments are no longer working. This is not surprising in many cases because it took two or more weeks for much of out early planted corn to emerge. This does make a point that insecticides applied at planting time do not last forever, and we need to scout for cutworm infestations or other insects that may reduce corn stands. Below are some pictures recently sent by a crop consultant.

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