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Sudden Vine Collapse May Be Associated with Combination of Virus Pathogens

October 07, 2019

Mystery (or sudden) vine collapse, reported by winegrape growers in the Lodi AVA since 2011, and now observed in other California grapegrowing regions, may be associated with a combination of virus pathogens including leafroll virus and grapevine vitiviruses. It appears that certain rootstocks, notably Freedom, and perhaps others, are more sensitive to these virus combinations and more prone to vine collapse.