Pear IPM | WSU Tree Fruit | Washington State University

Louie Nottingham, Tianna DuPont and Robert Orpet, March 2022

Our goal is to support low-cost and effective pest suppression in pear. These guidelines focus on striking a balance between active intervention and biocontrol for pear psylla and mites. Well-timed and well-selected codling moth sprays in addition to codling moth mating disruption supports the overall program.

Pear Pest Profiles

Pear Psylla

Codling Moth

Spider Mites

Management Tools & Cultural Controls

Phenology Model

Pesticide Efficacy

Honeydew Washing

How to Sample for Pear Psylla Using Beat Trays (Video)

Biocontrol

Overview of natural enemies

Data and Reports

Commercial orchard scouting

2022 Pear Pest Scouting

2021 Wenatchee Valley IPM Project (DuPont)

2017 – 2020 Wenatchee Valley IPM Project (DuPont)

Pear Psylla IPM Gallery

- Good coverage is a must when applying kaolin clay, pear psylla will find the gaps (Chris McCullough)
- Psylla can find even the smallest gaps in kaolin clay coverage to lay eggs (Chris McCullough)
- Sprayers applying kaolin clay to pear orchards (Chris McCullough)
- A crab spider eating an adult psylla (Molly Sayles)
- A psylla mummy with a Trechnites developing inside it (Chris McCullough)
- Deraeocoris nymph (left) and Trechnites wasp (right) found while scouting (Louie Nottingham)
- Winterform pear psylla on a pear bud (E. Beers)

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Contact Information

Dr. Louis Nottingham
Assistant Professor, Entomology
WSU-TFREC
1100 N Western Ave., Wenatchee, WA 98801
louis.nottingham@wsu.edu
540-798-2044 (cell)
https://tfrec.cahnrs.wsu.edu/nottingham/

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

Tianna DuPont
Tree Fruit Extension Specialist
(509) 293-8758
(509) 713-5346
tianna.dupont@wsu.edu