Frank Zalom

Grapevine Red Blotch Disease Threatens U.S. Grape Industry

December 16, 2019
$3 Million Grant Awarded to Study Causes, Impact of Grapevine Virus

University of California, Davis, scientists will lead a collaborative effort to study grapevine red blotch disease, which threatens the $162 billion U.S. grape industry. The virus causes red veins and blotches on grape leaves. The fruit on diseased plants is smaller, ripens more slowly, and its sugars and colors are muted.