Napa County UCCE
University of California
Napa County UCCE

Vineyard Views & Events

Latest information on viticulture, UC research and newly released UC publications.

Issue Articles Type Date Added
2018 Annual IPM Seminar- 11/16/18 (132KB)

21st Annual IPM Seminar for Lake & Mendocino

DATE: Friday, November 16, 2018

TIME: Doors open 7:30 am Seminar starts at 8:00 am

LOCATION: Hopland Research and Extension Center, 4070 University Road, Hopland, CA. Rod Shippey Hall.

REGISTRATION: 2018 IPM REGISTRATION Fee for the event with pre-registration is $45, cost to register at the door is $55.Online registration will close on Nov 13th.

7.5Hrs of CE credits will be offered, 1Hr of Laws and 6.5Hrs of other.

Questions? Please call JT at 463-4495, 7am-4pm.

PDF 10/31/18
2019 Train-the-Trainer: Pesticide Safety - IN SPANISH (173KB)

2019 Train-the-Trainer: Pesticide Safety - IN SPANISH

UC IPM is partnering with Western Center for Agricultural Health and Safety is offering up-to-date instructor training programs that are approved and partly funded by the California Department of Pesticide Regulation (DPR).

Location: Silverado Farming Company, 390 Taylor Street, Napa, CA 94559



8:00am - 5:00pm



8:00am - 5:00pm



Click on the registration link for additional information. Still have questions? Contact Napa Valley Grapegrowers at (707) 944-8311 or info@napagrowers

PDF 10/10/18
7th Annual Vineyards & Wineries Continuing Education Class Series -Updated (279KB)

Farm Bureau, the Ag Commissioner’s Office, and UC Cooperative Extension present our

7th Annual Vineyards & Wineries Continuing Education Class Series

November 2, 16, 30, and December 7th | 7:30am-12:30pm

Register online or call (707) 224-5403

Location: Napa Valley College ‘Little Theater’ (Building #1200, Address: 2277 Napa-Vallejo Hwy, Napa, CA 94558)

Cost: $75 for Farm Bureau members; non-members $95. 20% discount when signing up for all four classes.

Please reserve early as space is limited. Pre-Registration only. Registrations will be confirmed by email. See attached Flyer for additional details.

Questions? Contact NCFB at call (707) 224-5403, or email at

PDF 10/1/18
Monitoring and Detecting DMI Fungicide Resistance in Grape Powdery Mildew (343KB)

Follow the link to the newsletter below for more information on the status of resistance testing for grape powdery mildew for the DMI (FRAC 3) fungicides. 

PDF 4/27/18
Inspecting green-growing vines for VMB (22,963KB)

Vine mealybug has been found on recent nursery shipments of green-growing vines in the North Coast region. 

Follow the newsletter link below to learn more. The newsletter can be used as training tool for crews inspecting vines as they are received. 

In Napa County, staff of the Agricultural Commissioner inspect all incoming shipments of green-growing vines and nursery plants. If you are expecting a shipment, contact the Agricultural Commissioner's office: (707) 253-4357

PDF 8/10/17
Potential benefits of powdery mildew resistant grapevines (201KB)

Recent research from the UC Davis Department of Agricultural and Resource Economics evaluated the potential economic benefits to California of powdery mildew resistant grapevines. (See newsletter link below).

As a follow-up to this study, the research team is collecting information on grower preferences for specific traits. We would appreciate if you could take a few minutes to respond to their survey questions

Please direct questions to Olena Sambucci,

PDF 12/10/15
Walnut Twig Beetle and Thousand Cankers Disease (5,462KB)

In early September 2015, the California Department of Food & Agriculture confirmed the presence of thousand cankers disease of walnut in Napa County. 

Access the newsletter below for additional information on this fungal disease and the beetle that moves it from tree to tree. 

PDF 11/3/15
Monitoring Guide for Western Grapeleaf Skeletonizer (1,370KB)

On June 24, 2015, staff of the Napa County Agricultural Commissioner found one male Western Grapeleaf Skeletonizer in a pheromone-baited trap in a vineyard on Tubbs Lane in Calistoga. 

UCCE Advisors Lucia Varela and Monica Cooper developed a "Monitoring Guide for Western Grapeleaf Skeletonizer" so that vineyard owners, growers and workers could familiarize themselves with the pest's life stages and feeding habits.

Please use the newsletter link below to access the Monitoring Guide (English and Spanish versions). 

If you find this pest or feeding damage in Napa County please contact the office of the Agricultural Commissioner: 707-253-4357, OR contact UC Cooperative Extension: 707-253-4221,

For additional information on biology and management of this pest, access the UC IPM Pest Management Guide for Western Grapeleaf Skeletonizer

PDF 7/8/15
Arboreal Camel Cricket (33,926KB)

In April, we observed leaf symptoms in select vineyards consistent with feeding damage by arboreal camel crickets. 

For photos and additional information, access the newsletter using the link provided below. 

PDF 6/1/15
Vine mealybug management and FAQs (10,329KB)

The Napa County Wine grape Pest & Disease Control District sponsored a seminar on vine mealybug (VMB) on February 25. We discussed VMB detection, biology and management. As a follow-up, this article summarizes significant points from the day, focusing on issues that are of particular concern for management of VMB, and also addresses FAQs

PDF 3/16/15
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