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Nita lab

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
    • Resources for the Lab
    • Reading
    • Writing
    • 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

Category Archives: Others

Letter of support from the VVA for SSARE proposal (Nita)

By MizuhoNovember 17, 2016Others

Preliminary results from 2016 Organic trial

By MizuhoNovember 17, 2016Others

Grape vine and cluster cover examples

By MizuhoNovember 17, 2016Others

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My Tweets

RSS Virginia Grape Disease Updates

  • Grape Disease Risks: 6/17-24/2026, and Downy Mildew Forecast June 24, 2026
    Vine status We hedged our Chardonnay vines this week. Still behind on canopy management, as you can see in the picture above. Hybrids and table grapes are a bit more consistent with fruits. Vidal is BB-size, some others, e.g., Chardonel,...
  • VA Grape Disease Risks:6/10-6/17/2026, and downy mildew forecast June 17, 2026
    Vine status I found several third instars of spotted lanternfly (toward upper right, just below the catch wires) and ants enjoying their honeydew on a leaf. The situation is similar to last week. Our Chardonnay vines are reaching the top...
  • Grape Disease Risks: 6/3-6/10/2026 and Downy Mildew Forecast June 10, 2026
    Vine status Chardonnay vines have been growing nicely. I have noticed a lot of laterals, though. Made me wonder if something happened to the terminals (shoot tips) during the frost. My goal for the canopy management right now is to...
  • Grape Disease Risks 5/27-6/3/2026 and downy mildew forecast June 3, 2026
    Vine status The effect of rain finally kicked in. Chardonnay vines grew considerably over the last week. I started canopy management this morning. My goal is to keep a bit more shoots than I typically do to avoid developing “bull...
  • Disease risks 5/21-5/27 and downy mildew forecast May 28, 2026
    Vine status Probably because of the cooler temperature, the vines did not move as much as I hoped. As with last week, many Chardonnay shoots do not bear flower clusters, and relatively strong shoots are from the main trunks. Hybrids...
  • Disease risks from 5/13 – 5/20 and downy mildew forecast May 20, 2026
    Vine status Things are finally moving. I saw quite a few shots from the secondary (or tertiary) buds coming up strongly, especially from the central part of the canopy (i.e., from trunks). However, many do not have flower clusters. Hybrids...
  • Grape Disease Risks: 5/6 – 5/13/2026, downy mildew forecast, and pre-bloom disease management considerations May 13, 2026
    Vine Status Things are still slow, but moving. Our Chardonnay vines started to push secondary buds. On the other hand, some primary buds that survived the freezing events are developing rapidly. These staggered phenological stages will make disease management tricky....
  • Grape Disease Risks from Last Week, and downy mildew forecast May 6, 2026
    Vine status It has not changed much from last week. Temperatures have been relatively low, and the shoot growth rate remains slow. However, I observed some improvements (e.g., growth from basal buds, secondary buds, etc.) in hybrids and table grapes....
  • Grape Disease Risks from the last week, Mancozeb and Isomate Z Updates. April 29, 2026
    Vine status I was hoping to see some progress by now, but since the temperature has been relatively low (or maybe normal for this time of the year), vines have been relatively slow. I saw some movements with hybrids and...
  • Frost, disease risks, and a downy forecast April 22, 2026
    Vine status Unfortunately, many of our vines were affected by the frost event yesterday. I have heard from Northern VA, the Shenandoah Valley, and Central VA, with varying degrees of loss. I lost about 80% of the Chardonnay shoots, about...
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