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Tree Fruit News – Fruit Matters, May 2023


Three images: a) branch with damage b) aphid colony on leaf axil c) black and white photo of earwig in tree leaves

Woolly Apple Aphid Management in 2023

Woolly apple aphid is tricky to manage, but there are several strategies that can help.
Spring 2023 graphs of adults (top) and eggs (bottom)

Pre-bloom Pear Psylla in Integrated & Conventional Orchards, 2023

A selective spray program is working for pre-bloom pear psylla management in the Wenatchee Valley according to data from 7 pear orchard pairs in 2023.
May 3rd graph of codling moth degree days comparing 2021, 2022, and 2023

WSU Decision Aid System Update May 2023

As warm weather continues, follow updates to important pest and pathogen models on DAS.

Updates from WSDA Pesticide Management Division

Prevent Pesticide Drift As spraying season approaches WSDA is reminding pesticide applicators to ensure pesticides do not drift off target and offering tips on how to reduce the risk of drift. Read the label on…


codling moth biology and ecology video thumbnail

Codling Moth Series 01 Biology and Ecology

Peter McGhee presents Codling Moth Biology and Ecology
Codling moth predictive modeling video thumbnail

Codling Moth Series 02 Predictive Modeling

David Crowder presents Predictive Modeling


WA 64 Spring Field Tour

Join Kate Evans, Stefano Musacchi and Bernardita Sallato who will introduce the new apple variety WA 64 in two field tours. Learn what we know so far about this new apple and how to grow…


Evaluation of biopesticides for the control of Erwinia amylovora in Apple and Pear

In a recent study, we evaluated non-antibiotic materials for fire blight control in 8 Washington, 3 Oregon, 3 New York and 2 Pennsylvania field experiments conducted between 2013 to 2022.


WA 64 Spring Field Tour

May 16 | WSU ROZA Orchard

Spring Drone Day

May 19 | Alexander Ranch, Hayden Orchard

WA 64 Spring Field Tour

May 24 | WSU ROZA Orchard

Field Day – Mechanized Vineyard Planting

Jun 2 | WSU – IAREC, Prosser

Fire Blight Webinar Series: Fire Blight Pruning and Sanitation

Jun 13 | Virtual

Fire Blight Webinar Series: Using Weather & Environmental Conditions to Optimize Biologicals and Biopesticides for Bloom Protection

Oct 18 | Virtual



Karen Lewis

Tianna DuPont

Jodi Rinaldi Harms

Gwen Hoheisel

Bernardita Sallato

Tory Schmidt

Corina Serban

Marcella Galeni




Fruit Matters May 2023 was edited by Jodi Rinaldi Harms and Karen Lewis, WSU Extension

Washington State University