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Glassy Winged Sharp Shooters

California PD/GWSS Board Update

Now Accepting Research Funding Applications: The Pierce's Disease and Glassy-winged Sharpshooter Board provides grant funding to research and outreach projects focused on protecting vineyards, preventing the spread of winegrape pests and diseases, and delivering practical and sustainable solutions. Project proposals are due via online submission by Jan. 31, 2024. Award notifications will be announced in May 2024 for a July 2024 start.

Update on GWSS/Pierce’s Disease Nursery Programs

Over half of the state’s nurseries are in counties infested with the glassy-winged sharpshooter, and many ship to non-infested areas. Inspections, trapping, and treatments at nurseries, led by the Pierce’s Disease Control Program, are key to keeping GWSS from infesting new areas. Nursery Regulatory Program: From Jan. 1 through July 31, 2023, there were 20,250 nursery stock shipments to non-infested areas of the state. Origin county inspectors found 13 GWSS egg masses, five nymphs, and five adults in outgoing nursery stock shipments.