First Generation European Corn Borer Scouting & Treatment

First Generation European Corn Borer Scouting & Treatment

Growers are noting shot-hole feeding from European corn borer larvae on corn without Bt traits active against Lepidoptera.

While corn borer numbers have greatly decreased regionally since the introduction of the first Bt corns active against caterpillars, local populations may still cause damage on untraited corn.  

Nebraska Extension offers several resources to aid in scouting and making treatment decisions for first generation European corn borer on corn.

  • UNL Light Trap Data is available for Concord, Clay Center and North Platte. This information can help you monitor moth activity in your area, but should not be used to make treatment decisions for an individual field.
ECB shot hole damage
Figure 1. Shot hole feeding in corn from European corn borer larvae, similar to what growers are reporting this year.

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A field of corn.