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European Corn Borer, Forgotten But Not Gone –

By Central Indiana, John Obermeyer and Christian Krupke

Abstract

• Moths are now flying, mating and egg-laying. • Many non-Bt crops and plant species serve as a food source for this pest, don’t be unpleasantly surprised! • Weed control may be reduced because of corn borer’s tunneling. taller and healthier than neighboring plants. One indicator of the moth’s presence and numbers in a local area is noticing their evening mating activity while driving along roadsides or other grassy areas. This “wind-shield ” splatter technique should be an alert to begin looking in crop fields for their egg Black light trap captures of European corn borer moths within the last week reveal that this once dreaded pest has not become extinct. True enough, the widespread use of Btcorn for over a decade has greatly diminished this insect’s numbers. Fact is, that they haven’t gone away, partly due to their multitude of plant hosts ranging from crops, weeds, and ornamentals. Over the last several years, we’ve received occasional calls from individuals that neglected scouting for this pest in unprotected corn that were unpleasantly surprised at its presence and damage. This caution is to growers of all vulnerable crops, e.g., non-Bt field corn, popcorn, peppers, potatoes, hollyhocks, etc. The first-generation European corn borer moths are flying now (see Black Light Trap Catch Report). They are attracted to many different plants for egg-laying, usually those Corn borer egg mass, likened to fish scale

Year: 2011
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