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C.O.R.N Newsletter 2009-33
     September 29, 2009 - October 5, 2009


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Western Bean Cutworm Larvae Found
by Andy Michel, Curtis Young, Ron Hammond, Bruce Eisley

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Having caught western bean cutworm moths for the past four years, with over 500 moths being collected this past summer, we finally located our first larva last week, along with evidence of additional ones. A caterpillar was brought into extension from a location in southeast Putnam County that was identified as a western bean cutworm larva. A subsequent visit to the location, while not finding any more larvae, did find a corn ear with characteristic holes in the husk with feeding injury immediately below it. Although over 100 ear tips were closely examined for larvae, it was by quickly examining corn ears for holes in the husk that revealed this other find. See the C.O.R.N. newsletter from August 17, http://corn.osu.edu/story.php?setissueID=307&storyID=1878 for a video showing how to look for western bean cutworm injury.

It should be noted that this infestation is extremely low, and hardly worth calling an infestation. Nonetheless, larvae, or at least an indication of them, were found. With such low numbers, it is questionable if this will lead to a resident population in this area next summer. However, we will plan on monitoring this area of the state closely with both adult pheromone traps and subsequent egg and larval sampling next summer for the possibility of a localized infestation.

Readers can subscribe electronically to this newsletter by signing up at http://agcrops.osu.edu/services/email.html. E-mail labarge.1@osu.edu if you have problems subscribing or no longer wish to receive this newsletter.

C.O.R.N. is a summary of crop observations, related information, and appropriate recommendations for Ohio Crop Producers and Industry. C.O.R.N. is produced by the Ohio State University Extension Agronomy Team, State Specialists at The Ohio State University and Ohio Agricultural Research and Development Center. C.O.R.N. Questions are directed to State Specialists, Extension Associates, and Agents associated with Ohio State University Extension and the Ohio Agricultural Research and Development Center at The Ohio State University.


Information presented above and where trade names are used, they are supplied with the understanding that no discrimination is intended and no endorsement by Ohio State University Extension is implied. Although every attempt is made to produce information that is complete, timely, and accurate, the pesticide user bears responsibility of consulting the pesticide label and adhering to those directions.

All educational programs conducted by Ohio State University Extension are available to clientele on a nondiscriminatory basis without regard to race, color, creed, religion, sexual orientation, national origin, gender, age, disability or Vietnam-era veteran status.

Issued in furtherance of Cooperative Extension work, Acts of May 8 and June 30, 1914, in cooperation with the U.S. Department of Agriculture, Keith L. Smith, Director, Ohio State University Extension.

TDD # 1 (800) 589-8292 (Ohio only) or (614) 292-1868

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