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Foundation Plant Services Institutes Annual Vine Testing After Red Blotch Finds at Russell Ranch

January 11, 2018

"Moving forward, all of Russell Ranch will be tested annually for grapevine red blotch virus (GRBV), and for grapevine leafroll associated virus-3 (GLRaV-3) by composite testing," Al Rwahnih said. In addition, the vineyard will be visually inspected for virus symptoms and vectors more frequently. Under CDFA R&C Program requirements, every Foundation vine is required to be tested only once every five years for red blotch and leafroll, and the vineyard is required to be visually inspected twice a year.