European corn borer are being caught at low levels and at only five of the locations reporting this week.  Corn earworm numbers took a big jump at several locations, with numbers indicating the need for a 4-6 day (adding a day for the lower temperatures) spray schedule at many locations.  Fall armyworm numbers also increased significantly at several locations this week.  Keep an eye on the latest fields for ragged FAW feeding damage in the whorl, and larvae in the emerging tassel.

Where CEW numbers remain low, scout for ECB and FAW larvae, egg masses, and damage, using a threshold of 15% infested plants at tassel emergence, and 5% infested plants in silk stage fields.

Recommended spray intervals based on CEW trap catch