MN Fruit & Vegetable IPM News - Vol. 2, No. 1

In this Issue:

Welcome!

MDA Apple and Strawberry Pest and Identification Manuals

VEGETABLE NEWS

Vegetable Insect Update - Seed Corn Maggot

STRAWBERRY NEWS

Strawberry Insect Pests that will be Monitored in 2005

Weekly Pest Sampling Data

APPLE NEWS

Apple Insect Pests that will be Monitored in 2005

Apple Scab Infections

Weekly Trap Counts

Insect, Pest Fact Sheets

Vol 2 No.1

May 9, 2005

Apple Insect Pests That Will Be Monitored In 2005

Jean Ciborowski, MDA

The MDA’s apple insect monitoring program will focus on six insects this year. Data will be collected from traps monitored by MDA staff and from self-monitoring orchard cooperators. We are pleased to welcome some new cooperators and to say “welcome back” to some returning cooperators who will be involved in the project for another year. If you have questions about the program contact Jean Ciborowski at the MDA at 651-297-3217.

Apple maggot (AM)

Fruit injury is due to adult female egg-laying punctures (dimples), or larvae tunneling inside the fruit resulting in brown streaks and decay. AM can be distinguished from other fruit flies by the wing banding patterns.

MDA Fact Sheet on Web Site: www.mda.state.mn.us/biocon/am.pdf

More information also available in: Field Guide for Identification of Pest Insects, Diseases, and Beneficial Organisms in Minnesota Apple Orchards: www.mda.state.mn.us/ipm/applefg/am.pdf

Codling moth (CM)

Fruit injury is in the form of a sting or a deep entry.

MDA Fact Sheets on Web Site: www.mda.state.mn.us/biocon/cm.pdf and www.mda.state.mn.us/biocon/biologycm.pdf

More information is also available in: Field Guide for Identification of Pest Insects, Diseases, and Beneficial Organisms in Minnesota Apple Orchards: www.mda.state.mn.us/ipm/applefg/cm.pdf

Redbanded leafroller (RBLR)

RBLR can cause injury to both foliage (leaves) and fruit. Leaf-feeding could produce a skeletonized area near the midrib or rolled leaves typical of leafrollers. Fruit injury occurs when a rolled leaf is tied to a fruit or when fruits are webbed together. RBLR fruit injury is usually more shallow and superficial than that caused by obliquebanded leafroller, the other major leafroller species in Minnesota.

MDA Fact Sheet on Web Site: www.mda.state.mn.us/biocon/rblr.pdf

More information is also available in: Field Guide for Identification of Pest Insects, Diseases, and Beneficial Organisms in Minnesota Apple Orchards: www.mda.state.mn.us/ipm/applefg/rblr.pdf

Obliquebanded leafroller (OBLR)

Feeding injury could occur to foliage (leaves) and the fruit. Overwintered larvae begin to feed on developing fruit immediately after petal fall. Many damaged fruits will drop, but those remaining on the tree will show corky scars at harvest. Summer larvae may also feed on the fruit .

MDA Fact Sheet on Web Site: www.mda.state.mn.us/biocon/oblr.pdf

More information is also available in: Field Guide for Identification of Pest Insects, Diseases, and Beneficial Organisms in Minnesota Apple Orchards: www.mda.state.mn.us/ipm/applefg/oblr.pdf

Lesser appleworm (LAW)

Like codling moth (CM), larvae of lesser appleworm (LAW), and oriental fruit moth (OFM) feed inside apple fruit.

More information also available from: Field Guide for Identification of Pest Insects, Diseases, and Beneficial Organisms in Minnesota Apple Orchards: www.mda.state.mn.us/ipm/applefg/law_ofm.pdf

Oriental Fruit Moth

More information also available in: Field Guide for Identification of Pest Insects, Diseases, and Beneficial Organisms in Minnesota Apple Orchards at www.mda.state.mn.us/ipm/applefg/stlm.pdf

Return to index

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.