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hand holding grape cluster with rot

Field Note

Sour rot is a potentially devastating, late-season bunch rot of particular concern on tight clustered grapevine varieties in warm, wet years. This causes the disease to have sporadic effects on grape harvests, with some years showing only small...
  • Cornell Integrated Pest Management
  • Plant Pathology and Plant-Microbe Biology Section
  • Viticulture and Enology