By: Rick VanSickle October 9th, 2020 The Ontario wine industry is in one big hot mess right now, fighting fires on several fronts with few tools to extinguish all the flames engulfing them.
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By: Luyi Cheng Northwestern University October 16th, 2020 Alison Crowe knows there’s a problem. Crowe is a winemaker in California’s Napa Valley. “If you drove through my vineyards right now, you’d see these cute little fuzzy leaves and tiny little baby grape clusters,” she said in April, when everything in the vineyards looked fine. But around July and August, for some vineyards, red blotches appeared on grapevines’ leaves. The blotches signal infection, caused by a virus that stunts...
OWRI Upcoming Webinar series on Red Blotch disease in grapevine
Fast transmission of grapevine 'Pinot gris' virus (GPGV) in vineyard
California Agriculture Research Article - Vineyard nutrient needs vary with rootstocks and soils
$163 billion grape industry at risk due to spread of grapevine red blotch virus with no known treatment
$3 million grant given to institutions in California and Oregon to address unknowns of disease and mitigate its effects on grape production, wine quality Less than an hour from UC Davis, lie the towns of Napa and Sonoma, both hubs of the $163 billion US grape industry. California-grown grapes makes up 90% of the country’s wine production, yet they are at risk as a currently untreatable grapevine disease spreads rapidly across the country but especially in California and Oregon vineyards.
Ancient, heat-hardy wine grapes are being resurrected in Spain to deal with rising temperatures. Worried producers in Bordeaux—where Cabernet and Merlot have long ruled—have approved the use of seven new wine grapes from Portugal, Spain and southern France in their blends. The University of California at Davis recently released five new hybrid grape varieties—its first such release since the 1980s—to resist vine-killing insects expected to proliferate as winters warm.