Grapevine Leaf Roll-associated Virus 3 as well other virus diseases of grapevines have a profound effect on wine quality and the economic viability of a vineyard. Dr. Kari Arnold the Area Orchard and Vineyard Systems Advisor at Stanislaus County, Associated with University of California Cooperative Extension, describes the connections between the Californian plant propagation system, the movement of mealybugs both in the vineyard and across the globe, the difficulty of identifying virused plants, and practices growers can and are using to manage the spread of red leaf viruses both within and between vineyards.

References:

• UCCE Stanislaus County
• @KariDigsPlants [Twitter
• Controlling Mealybug Vectors of Grapevine Virus | Dr. Kent Daane (Sustainable Winegrowing Podcast)
• IPM Control of Vine Mealybugs | Greg Pennyroyal (Sustainable Winegrowing Podcast)
• Sign Up | Irrigation Efficiency Project
• Sustainable and Organic Control of Vine Mealybug in Vineyards: Two Growers, Two Approaches
• UC Cooperative Extension Find Academics and Staff\
• UC IPM: Virus Diseases
• UC IPM: Vine Mealybug

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