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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.


Contact Information

Robert Orpet

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

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

This Project was Funded by:





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