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2023 Pear Pest Scouting

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Authors: Robert Orpet and Molly Sayles; WSU Entomology. March 9, 2023

The Orpet lab at WSU-TFREC is monitoring pear pests at seven commercial locations in the Wenatchee Valley in addition to the WSU research center orchard (‘Sunrise’) near Rock Island (Figure 1). At each location, one block follows our phenology-based IPM guidelines and another block follows standard conventional management. We are also monitoring organically managed blocks at three of the locations. All blocks contain mostly Anjou and Bartlett trees planted >50 years ago, except for Rock Island, which was planted in 2007.

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How we Sample

We sample pear psylla adults and natural enemies with beat tray taps. In spring, we collect buds to monitor psylla eggs and nymphs.  In summer through fall, we collect leaves to monitor psylla eggs and nymphs, mites, and earwigs.

A map of the Wenatchee valley with dots for the seven paired sampling sites from Rock Island to Leavenworth.

Figure 1. Areas of paired pear orchards for pest monitoring in commercial orchards (panel A) and the WSU SRO pear blocks (panel B). AgWeatherNet (AWN) temperature sensor locations are indicated with blue points, city landmarks with red.

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Contact Information

Robert Orpet

Dr. Robert Orpet
Postdoctoral Research Associate
WSU Tree Fruit Research & Extension Center
1100 N Western Ave., Wenatchee, WA 98801
robert.orpet@wsu.edu

Molly Sayles
PhD student
WSU Tree Fruit Research & Extension Center
1100 N Western Ave., Wenatchee, WA 98801
molly.sayles@wsu.edu

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Disclaimer: 

Use pesticides with care. Apply them only to plants, animals, or sites listed on the labels. When mixing and applying pesticides, follow all label precautions to protect yourself and others around you. It is a violation of the law to disregard label directions. If pesticides are spilled on skin or clothing, remove clothing and wash skin thoroughly. Store pesticides in their original containers and keep them out of the reach of children, pets, and livestock.

YOU ARE REQUIRED BY LAW TO FOLLOW THE LABEL. It is a legal document. Always read the label before using any pesticide. You, the grower, are responsible for safe pesticide use. Trade (brand) names are provided for your reference only. No discrimination is intended, and other pesticides with the same active ingredient may be suitable. No endorsement is implied.

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