Reports received: 26 of 34 monitoring sites submitted data this week.

Trap catches this week:

• European corn borer (ECB-E): reported at 1 sites
• European corn borer (ECB-Z): reported at 3 sites
• Corn earworm (CEW): reported at 19 sites, 18 high enough to be on a 3, 4,5, or 6 day spray schedule
• Fall armyworm (FAW): reported at 10 sites
• Western bean cutworm (WBC): reported at 6 sites

Average sweet corn trap catches from 5.27.25– 9.9.25.

Both CEW and FAW increased this week. CEW eggs are usually very difficult to scout for but at sites with high pressure you can probably find eggs on the silks (see photos below). While CEW is most attracted to green silk stage fields for egg-laying, as the number of attractive fields decreases, fields with drying silk may become more attractive, prolonging the period when sprays are needed. CEW will also infest peppers and tomatoes when populations are high.

Table showing trap catch for 9.2.25 – 9.9.25.

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