- Author: Jeannette E. Warnert
Published on: June 23, 2016
Besides the drought, red blotch disease is the most serious concern confronting California grape growers, reported Lynn Ally in Wine Spectator.
In 2008, UC Cooperative Extension specialist Jim Wolpert and staff research associate Mike Anderson identified red blotch as a disease caused by a distinct virus. Since then, it has been found in numerous California regions, as well as 11 other states, including all major U.S wine states.
As suggested by its name, the disease turns grape leaves a blotchy red color. The infected grapevines may produce clusters with reduced...
Tags: Jim Wolpert (4), red blotch (1)
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