MN Fruit & Vegetable IPM News - Vol. 1, No. 11

Thus far, we have had a very “normal” Corn Earworm (CEW) season with very low moth flights throughout southern Minnesota. One of our new cooperators, operating two traps in Iowa (near Des Moines and just south of the MN border) has also reported very few CEW. You can view all CEW moth flight data for 2004 and recent years at: http://vegedge.umn.edu/2004/moth.htm. One example for 2003 is shown in the Figure below. As indicated for 2003, the flight may not really take off for southern Minnesota until after August 12th. However, the flight may also begin as early as the last week in July, depending on location. It is therefore not too early to begin to prepare for the annual late-season flight that typically causes the most damage to sweet corn in the upper midwest! In addition to CEW, the 2nd generation flight of European corn borer (ECB) will also be underway by August 1st at most southern MN, and Wisconsin locations. Although degree-days were behind, they have been catching up with the 90F weather this week.

Management Options for 2004: I will be providing more information about CEW and ECB management in the next issue of the newsletter. However, for recent recommendations, you can review the July 25th 2003 issue of the MN Vegetable IPM Newsletter at: http://www.vegedge.umn.edu/mnvegnew/vol5/vol5n4.htm

Thanks again to all the volunteers who are doing an excellent job of monitoring ECB and CEW moth flights, AND sending your data in each week!

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ACKNOWLEDGEMENTS

Co-Editors: Bill Hutchison, Department of Entomology, University of Minnesota, hutch002@umn.edu
Jeanne Ciborowski, Minnesota Department of Agriculture, Ag. Resources Division,jeanne.ciborowski@state.mn.us
Suzanne Wold-Burkness, Department of Entomology, University of Minnesota, woldx018@umn.edu

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., Tuesday 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/default.htm

Partial funding for this publication is provided through partnership agreements with the Minnesota Fruit and Vegetable Growers Association and the United States Department of Agriculture – Risk Management Agency (RMA) and the RMA Community Outreach and Assistance Partnership Program. These institutions are equal opportunity providers.

DISCLAIMER

References 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.

Last Revised July 22, 2004.
The University, including the Minnesota Extension Service, is an equal opportunity educator and employer. ©1999-2004 Minnesota Extension Service, University of Minnesota. All rights reserved. Contact copyright@extension.umn.edu for information on reproduction or use of this material.