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Tree Fruit News – June 14


The Utility of Bitter Pit Prediction Models for Honeycrisp in Washington State

Written by Ines Hanrahan and Marcella Galeni, Washington Tree Fruit Research Commission, June 2019.        At a Glance: Methods evaluated: Ethephon method; Passive method; Hot Water method; Penn State method. Time commitment: Inducing bitter…

Managing earwigs: how and why to conserve in pome fruits and suppress in stone fruits

Earwigs are omnivores capable of damaging fruits, but they can also suppress pests such as woolly apple aphid and pear psylla. So, are earwigs pests or beneficials? Ongoing research in Washington and around the world…

Sampling for Little Cherry Disease

Written by: Scott Harper, WSU Plant Pathology. Edited by Tianna DuPont, WSU Extension. Updated June 2019 If you are intending to conduct molecular testing for Western X or Little Cherry Virus 1 or 2, the…

Cherry Insect Control during Harvest

June 7, 2019, WSDA PMD (TWS)   The 2019 cherry harvest has begun. During this time, it may be necessary to apply insecticides to manage pests such as the spotted wing drosophila and western cherry…

Delta traps with codling moth

By Kacie Athey, WSU-TFREC Entomology,, August 2019 Some of you may be seeing your Delta traps filling up with codling moth this season. Do not panic, there are about 1,200 acres of commercial releases…


X-disease phytoplasma (Western X)

Little Cherry Disease is caused by Western X Phytoplasma as well as Little cherry virus 1 (LChV1) and Little cherry virus 2 (LChV2). Diseased trees produce cherries of small size and poor color and flavor…

Little Cherry Virus

Little Cherry Disease (LCD) is a critical concern to sweet cherry producers in the state of Washington. This disease is caused by infection by Little cherry virus 1 (LChV1), Little cherry virus 2 (LChV2) or…




Karen Lewis

Tianna DuPont

Gwen Hoheisel

Bernardita Sallato

Tory Schmidt

Corina Serban


Washington State University