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C.O.R.N Newsletter 2009-30
     September 8, 2009 - September 14, 2009


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Summary of Western Bean Cutworm for 2009 in Ohio
by Andy Michel, Ron Hammond, Bruce Eisley

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Western bean cutworm (WBC) flights are coming to an end this season, so we thought it appropriate to provide a summary for 2009 and predictions for the coming years. Our numbers increased for the 4th straight year, and more than tripled the total from last year: 150 caught in 2008 compared to greater than 550 caught in 2009. Again, just like last year, north-west Ohio caught the most with 249 adults among Defiance, Fulton, Ottawa and Wood counties (see our update map at http://entomology.osu.edu/ag/). However, we still have not found eggs, larvae or damage of WBC in Ohio, although Ontario, Canada has reported their first larvae. Still, we recommend inspecting corn during harvest for any signs of WBC infestation such as damaged ear tips or holes in the middle of the corn ear where the larvae has chewed through the husk. See our video from August 17, 2009 - August 24, 2009 CORN newsletter on how to inspect corn. Please report any suspected western bean cutworm damage to entomology specialists or your extension educator.

What can we predict for the years to come? We expect WBC to continue its expansion across the corn belt, as evidenced by Pennsylvania catching a significant number in its first year of trapping (http://ento.psu.edu/extension/field-crops/corn/western-bean-cutworm). Our first, and best, course of action remains scouting. Until we find damage, controlling in advance for WBC cutworm may not be worth the investment (currently, products with the Cry1F Bt gene such as Herculex I and Smartstax offer control of WBC). However, WBC seems to have established itself within Ohio, and will probably become one of the more important corn pests.

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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