Health Status of California Grapevine Planting Material
Pathogenic viruses, fungi and bacteria presence in CDFA-certified nursery stock
Aug 2010 Issue of Wine Business Monthly
Any late August or September trip through Napa or Sonoma vineyard country illustrates in vivid red and purple the consequences of pathogen contamination in young and mature grapevine plants. Visitors to the region marvel at the wonderful display of color in these red-fruited varieties, but those in the know understand that this phenomenon is a harbinger of weak-flavored, difficult to ripen fruit. Grapevine Leafroll Associated Virus (GLRaV) (Photo 1) is usually at work here, affecting white varie...
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