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Discipline: Grape pathology

Investigator: Mizuho Nita

Title: Virginia Grape Disease Updates

Description: Seasonal updates on wine grape disease management, extension meeting announcements, and other related topics from a grape pathology lab at AHS AREC.

Virginia Grape Disease Updates

  • Grape Disease Risks: 5/8 – 5/15/2024 Here’s a snapshot from the last week, showing the number of days with the risk of each disease: Ph = Phomopsis, PW = Powdery mildew, BR = Black rot, and DM = Downy mildew. N/A means there is no data...
  • Grape Disease Risks: 5/1 – 5/8/2024 Here’s a snapshot from the last week, showing the number of days with the risk of each disease: Ph = Phomopsis, PW = Powdery mildew, BR = Black rot, and DM = Downy mildew. N/A means there is no data...
  • Slides from today (including disease risks from the past four weeks) Thank you again for joining the session earlier today. Please see my slides below. We also discussed the requirement to check the limited area for restricted pesticides. Please visit this site, enter your location, and print out the screen for...
  • Grape Disease Risks 4/12 – 17/2024 Here’s a snapshot from the last week, showing the number of days with the risk of each disease: Ph = Phomopsis, PW = Powdery mildew, BR = Black rot, and DM = Downy mildew. N/A means there is no data...
  • Grape Disease Risk Assessment for this week plus a link to this year’s Pest Management Guides Here’s a snapshot from the last week, showing the number of days with the risk of each disease: Ph = Phomopsis, PW = Powdery mildew, BR = Black rot, and DM = Downy mildew. N/A means there is no data...
  • Slides from yesterday and first NEWA map for the season Thanks for joining us yesterday. Please see my slides below. Here’s a snapshot from the last week, showing the number of days with the risk of each disease: Ph = Phomopsis, PW = Powdery mildew, BR = Black rot, and...
  • 2024 VCE Virtual Vineyard Meetings, starting April 5th at 1 PM Dear all, We will hold monthly virtual vineyard meetings again this year. A team of researchers at Virginia Tech, Dr. Drew Harner, Dr. Mizuho Nita, and Mr. Tremain Hatch, will cover topics in Viticulture and Grape Pathology based on input...
  • Reminders for early-season grape disease management Phomopsis cane and leaf spot One of the diseases you need to consider soon after bud break is Phomopsis cane and leaf spot. It causes minor leaf spots, which are more evident to our eyes, but necrotic lesions cause more...
  • Spring Viticulture Meetings, 2024 There will be a couple of vineyard workshops focusing on pest management.  These meetings have a hybrid format; you can meet in person or join the meeting through Zoom. Please register for the meetings: https://forms.gle/T4vdn1e3TxQ4zxez5 21 March, Vineyard IPM Workshop from...
  • Last disease risk post and Second report from the Sentinel Vineyard Project Here’s a snapshot from the last week, showing the number of days with the risk of each disease: Ph = Phomopsis, PW = Powdery mildew, BR = Black rot, and DM = Downy mildew. At this point, you can ignore...