Archive Nut, Prune and Olive Programs

UC Cooperative Extension Sonoma County: Page

Grapevine Pests and Diseases

Pierce's Disease Insect Vectors Glassy Winged Sharpshooter identification. Grape Pest Notes Identification and monitoring information for arthropod grape pests and fungal diseases. Grapevine Red Blotch Disease Grapevine Red Blotch information and identification.
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UC Cooperative Extension Sonoma County: Page

Glassy-Winged Sharpshooter

Glassy-winged sharpshooter (GWSS) is a serious new pest in California. Like other sharpshooters, the GWSS spreads Xylella fastidiosa, the bacterium that causes Pierce's disease in grapevines.
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UC Cooperative Extension Sonoma County: Page

Mealybugs

How to Distinguish Among Different MealybugsWhich mealybug is it?
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UC Cooperative Extension Sonoma County: Page

Moth & Worm Pests

European Grapevine Moth Biology European Grapevine Moth: a New Pest of Grapes in California (CAPCA Adviser Magazine July 2010) European Grapevine Moth in Napa Valley Vineyards (Practical Winery & Vineyard, Mar/Apr 2010) European Grapevine Moth Grape Day Handout, February 2010 En Espaol: La Polilla d...
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UC Cooperative Extension Sonoma County: Page

Past Newsletters

Newsletters: 2022 - Present Newsletters: Pre-2022...
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UC Cooperative Extension Sonoma County: Page

Current Newsletter

We asked an author cited in this article important questions provided by readers. Check out our short interview with Ph.D. Candidate, Lauren Marigliano here: https://cesonoma.ucanr.
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UC Cooperative Extension Sonoma County: Page

Threecornered alfalfa hopper degree day model

The threecornered alfalfa hopper (TCAH) is a vector of Grapevine red blotch virus that causes Grapevine red blotch disease in vineyards. A degree day model was developed to predict the ideal time frame for ground cover management to help reduce TCAH populations in vineyards.
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