The UCCE Fire Network has prepared a series of educational resources on wildfire preparedness for agricultural landowners on the topics of defensible space, structure hardening, and protection for crops, vineyards and orchards. Access the resources on the UC ANR Fire Network website.
During drought years, we often experience large VMB populations, putting Napa vineyards at increased risk for crop damage and pest spread. Respond accordingly by scheduling early interventions to reduce populations. Educational resources and FAQ are answered on our website.
Three leafhopper species--western grape, variegated and Virginia creeper--are present in Napa vineyards. Both variegated and Virginia creeper are invasive species, whose range has expanded considerably in Napa in the last 10 years.
Spotted lanternfly is a newly invasive pest that has been found in several eastern states. Feeding activity and copious honeydew production can damage vines and fruit trees and promote the growth of sooty mold.
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.
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…
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.
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…
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.
