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Making wines from vines resistant to disease in Ventura County kclu.org - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from kclu.org Daily Mail and Mail on Sunday newspapers.
UCD Professor/Geneticist to Retire June 29 June 02, 2021 University of California, Davis (UCD) professor and geneticist Dr. Andrew Walker will retire June 29 after more than 30 years on the Department of Viticulture and Enology faculty and as a winegrape breeder. Given the long-term nature of the grape breeding process, it s not surprising that some of Walker s more significant breeding projects came to fruition later in his career the release of five nematode resistant rootstocks in 2009, and the 2020 official release of five new winegrape varieties resistant to Pierce s Disease (PD). Reflecting the reality of his work, Walker titled one of his recent lectures, 30+ Years of Grape Breeding and Just Getting Started. With additional winegrape cultivars in development in the Walker Lab being bred for both PD resistance and powdery mildew resistance, important new grapevine materials will continue to become available well after he retires. ....
Pasaente Noir at The Ojai Vineyard / Photo by Kim Baile Losing a vineyard to disease is “extremely painful,” says Adam Tolmach, cofounder of The Ojai Vineyard. In 1981, he planted more than five acres of mostly Syrah on Ventura County land that his grandfather purchased a half-century earlier. His last vintage was in 1995. “You put your heart and soul into it,” says Tolmach. “I planted every one of the vines and nurtured them. It was like my baby that I was working on. It was very heartbreaking to have it slowly die off.” The culprit was Pierce’s disease (PD), which is spread by insects known as glassy-winged sharpshooters. It’s one of the few scourges that actually kills vines, rather than just hamper them. A problem in California since the dawn of commercial grape-growing in the 1880s, PD is more prevalent in Southern California. But it’s also known to hammer vines in the north, especially along riparian corridors like those near the Napa River. ....