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Grape Pathology lab at Virginia Tech
  • Research
    • trunkdiseaseID.org
    • SCRI Trunk disease project
    • Cumberland-Shenandoah Fruit Workers Conference
  • Extension
    • GrapeIPM.org
    • Virginia Sentinel Vineyard Project
    • VCE Grape Disease Management YouTube Videos
    • Community, Local, and Regional Food Systems
    • Maryblyt
  • Resources
    • AHS AREC GP Weather Station Data
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    • Nita lab internal use
  • 日本語
  • Research
    •         - trunkdiseaseID.org
    •         - SCRI Trunk disease project
    •         - Cumberland-Shenandoah Fruit Workers Conference
  • Extension
    •         - GrapeIPM.org
    •         - Virginia Sentinel Vineyard Project
    •         - VCE Grape Disease Management YouTube Videos
    •         - Community, Local, and Regional Food Systems
    •         - Maryblyt
  • Resources
    •         - AHS AREC GP Weather Station Data
    •         - Resources for the Lab
    •         - Reading
    •         - Writing
    •         - Nita lab internal use
  • 日本語

Tag Archives: JVA

＊＊＊　日本ワインブドウ栽培協会 会員限定 ワインブドウ用抗カビ剤検索サイト　＊＊＊

By MizuhoJune 26, 2023WritingJVA

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RSS feed: Virginia Grape Disease Updates Virginia Grape Disease Updates

  • Grape Disease Risks: 9/9 – 9/16/2026 and Downy Mildew Forecast September 16, 2026
    Vine Status I heard some growers have seen quite a bit of ripe rot this year. I hope you avoided it! Grape Disease Risks: 9/9-9/16/2026 NEWA is an Agricultural Weather Station Network, and we are part of the team. Here is...
  • Grape Disease Risks: 9/2-9/9/2026 and Downy Mildew Forecast September 9, 2026
    Vine Status We harvested table grapes today. Some cultivars, e.g., Mars, Faith, Everlest, Neptune, and Joy, had OK harvests despite the frost damage. Grape Disease Risks: 9/2-9/9/2026 NEWA is an Agricultural Weather Station Network, and we are part of the team....
  • Grape Disease Risks: 8/26-9/2/2026, and Downy Mildew Forecast September 2, 2026
    Vine Status Sooty mold on a Chardonnay leaf due to honeydew produced by the spotted lanternfly. The sugar content in honeydew can promote the growth of certain fungi that might not otherwise appear. Things have slowed down a bit, but...
  • Grape Disease Risks: 8/19-8/26/2026 and Downy Mildew Forecast August 26, 2026
    Vine Status Our Chardonnay vines are nearing harvest. The only issue is that we only have a few clusters… Grape Disease Risks: 8/19-8/26/2026 NEWA is an Agricultural Weather Station Network, and we are part of the team. Here is a snapshot...
  • Grape Disease Risks: 8/12-8/19/2026 and Downy Mildew Forecast August 20, 2026
    Grape Disease Risks: 8/12-8/19/2026 NEWA is an Agricultural Weather Station Network, and we are part of the team. Here is a snapshot from last week showing the number of days with risk for each disease: Ph = Phomopsis, PW = Powdery...
  • Grape Disease Risk: 8/5-8/12/2026 and Downy Mildew Forecast August 12, 2026
    Vine Status The majority of Chardonnay clusters are in the middle of veraison. For some reason, our Merlot dodged the frost, and its clusters started to accumulate sugars. Grape Disease Risks: 8/5-8/12/2026 NEWA is an Agricultural Weather Station Network, and we...
  • Grape Disease Risks: 7/29-8/5 and Downy Mildew Forecast August 5, 2026
    Grape Disease Risks: 7/29 – 8/5/2026 NEWA is an Agricultural Weather Station Network, and we are part of the team. Here is a snapshot from last week showing the number of days with risk for each disease: Ph = Phomopsis, PW...
  • Weekly Grape Disease Updates, Seasonal Disease Management Reminders, and a List of short PHI materials. July 29, 2026
    Vine Status We received much-needed rain (~0.9 inches) yesterday! Many Chardonnay, Chardonel, and Vidal clusters are getting soft and approaching veraison. Some others, e.g., Frontenac and many table grapes, are at different stages of veraison. Grape Disease Risks: 7/22-7/29/2026 NEWA is...
  • Grape Disease Risks: 7/15-22/2026 and downy mildew forecast July 22, 2026
    Vine status Some table grapes started veraison. One early cultivar (Everest, not pictured) had one cluster survive the frost and start to accumulate sugar. Many Chardonnay clusters are at bunch closure. Vidal is at bunch closure; some others, e.g., Chardonel...
  • Grape Disease Risk: 7/8-7/15/2026 July 15, 2026
    Vine status If anything, this year has been a Phomopsis year! These spots on the leaf in the picture are Phomopsis lesions. You do not need to manage this disease right now. We will manage them next spring. Many Chardonnay...
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