In this Issue:
**WEB ONLY VERSION**
Corn Earworm and European Corn Borer Alert!!
| August 4 , 2005 |
Corn Earworm and European Corn Borer Alert!!
Suzanne Wold-Burkness and Eric Burkness, University of Minnesota
European corn borer and corn earworm moth catches are increasing around the state. In Dodge Center (Dodge Co.) ECB moth catch has risen to 81/night, and 19/night for CEW (hartstack trap), and in Blue Earth (Faribault Co.), CEW trap catches have exceeded 20/night (hartstack trap). In south-central IA (Polk County) a cooperator reported a CEW moth catch of 66/night (hartstack trap). This may be an indication that the main CEW flight is arriving in Minnesota. Based on degree days for ECB, we are just past the peak of the second generation of moths. If you are not currently monitoring ECB and CEW moth flights, now is the time to begin. Special attention should be given to fields that are at the silk stage. Check current ECB and CEW trap catch data for several areas in MN, and Polk Co. IA (CEW), at the Weekly Moth Catch site: http://www.vegedge.umn.edu/2005/moth.htm
For more information on traps, thresholds, and labeled insecticides, see the 2003 article at:
(also check current insecticide labels prior to use)
http://www.vegedge.umn.edu/mnvegnew/vol5/vol5n4.htm
For more information on CEW and ECB identification and photos, check the Fact Sheet list at:
http://www.vegedge.umn.edu/vegpest/swtcorn/corn.htm
ACKNOWLEDGEMENTS
Co-Editors: Bill Hutchison (hutch002@umn.edu), Department of Entomology, University of Minnesota, Jeanne Ciborowski, Minnesota Department of Agriculture, Ag. Resources Management and Development Division, and Suzanne Wold-Burkness (woldx018@umn.edu), Department of Entomology, University of Minnesota
The Newsletter is published weekly from May through August, cooperatively, by the Minnesota Department of Agriculture (MDA) and the University of Minnesota (U of MN). Reports are posted on the U of MN and MDA web sites on Fridays. If you have suggestions and/or comments, please send your contributions by 4 p.m., Wednesday to Jeanne Ciborowski, 651-297-3217, jeanne.ciborowski@state.mn.us , MDA, 90 W. Plato Blvd., St. Paul, MN 55107-2094. You can access the Newsletter at the U of MN web site in htm format at: www.vegedge.umn.edu/MNFruit&VegNews/mnindex.htm and at the MDA web site in pdf format at: www.mda.state.mn.us/biocon/fruitreports/
Partial funding for this publication is provided through partnership agreements with the Minnesota Fruit and Vegetable Growers Association (MFVGA) and the United States Department of Agriculture – Risk Management Agency (RMA). These institutions are equal opportunity providers.
DISCLAIMER
Reference to products in this publication is not intended to be an endorsement to the exclusion of others which may have similar uses. Any person using products listed in this publication assumes full responsibility for their use in accordance with current manufacturer directions.
The University, including the Minnesota Extension Service, is an equal opportunity educator and employer. ©1999-2005 Minnesota Extension Service, University of Minnesota. All rights reserved. Contact copyright@extension.umn.edu for information on reproduction or use of this material.