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.

•  First Generation European Corn Borer Scouting and Treatment Decisions (NebGuide G1782) which includes a management worksheet to help determine whether control is warranted.

• For treatment options, rates and restrictions see the 2016 Insecticides for Field Crops section in the Nebraska Extension 2016 Guide for Weed, Disease, and Insect Management in Nebraska and the product label.