Red blotch - a vapid vineyard virus

The Skinkis lab at OSU is completing a three-year study of red blotch across a number of vineyards trying to identify symptoms in Willamette Valley and what the virus does to the plants and what growers have to be fearful of. Finding the virus So what happens if the tests indicate the presence of the virus? “I’m a viticulture extension person, not a pathologist who might suggest the best way to get rid of it would be to pull the plant. [...]people have been living with this GRBV condition since it was first described in Napa Valley Cabernet in 2008 and it’s likely it’s been present for decades causing canopies to become red and blotchy.