In this Issue:
GUEST ARTICLE
Maximizing Fruit Quality in Fresh Market Tomatoes – by Sieg Snapp, Department of Horticulture, Michigan State UniversityVEGETABLE NEWS
Vegetable Insect Updates
APPLE NEWS
STRAWBERRY NEWS
| Vol 1 No. 14 | August 30, 2004 |
Vegetable Insect Update – Corn Earworm Are Here!!
Suzanne Wold-Burkness, Eric Burkness, and Bill Hutchison, University of Minnesota, St. Paul, MN
Corn Earworm (CEW): Much to everyone’s dismay, the CEW have shown up across the state. At Rosemount (Dakota Co.) we caught an average of 13 moths/trap on the night of August 24 in pheromone traps, and in Austin (Mower Co.), 17 moths were caught during the night of August 23 (see graph). As reported in the August 9 issue of the newsletter (http://www.vegedge.umn.edu/MNFruit&VegNews/Vol1/vol1n12.htm), a moth catch at this level is over the recommended threshold, and an insecticide application is justified if fresh silk is present in sweet corn. There are a few locations (e.g., Blue Earth, Faribault Co.) where CEW moth catch remains low. You can view all CEW moth flight data for 2004 and recent years at: http://vegedge.umn.edu/2004/moth.htm
European corn borer (ECB): The ECB flight continues to fluctuate at low levels across the state. For additional information see the 2004 Moth Flight site for up-to-date information on moth flights (http://vegedge.umn.edu/2004/moth.htm).
Bean Leaf Beetle (BLB): The first generation of BLB continues to be active and as snap bean plantings begin to senesce BLB is moving back into near by soybean fields. Snap bean plantings with developing bean pods should be checked for the presence of pod feeding.
Potato Leafhopper (PLH): PLH continues to be present in relatively high numbers at Rosemount.
Cabbage Looper (CL): On late-planted cabbage, CL populations in untreated plots have dropped significantly. The combination of cold weather and periods of heavy rain have contributed to the drop in population. In addition, pheromone trap catch has remained low and egg lay has decreased.
ACKNOWLEDGEMENTSCo-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 August 26, 2004.
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