Nita lab

Grape Pathology lab at Virginia Tech

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Virginia Grape Disease Updates

Grape Disease Risks 4/12 – 17/2024 April 18, 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 April 11, 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 yesterday and first NEWA map for the season April 5, 2024
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 March 29, 2024
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 March 15, 2024
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 March 11, 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 September 24, 2023
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...
Grape Disease Risks 9/6 – 9/13/2023 September 14, 2023
According to the Sentinel Vineyard Core Group discussions, many growers are harvesting early season cultivars right now. Sugar accumulation and the cleanliness of the crop has been particularly good this year. We will see how it will translate into the...
Sentinel Vineyard Newsletter, upcoming Virtual Vineyard Meeting, and SLF survey September 8, 2023
Sentinel Vineyard Newsletter Here’s is our newsletter #1 for this year. Virtual Vineyard Meeting Our next Virtual Vineyard Meeting (and will be the last one for the season) will be held next Thursday (9/14/2023) from 1 PM. If you have...
Grape Disease Risks 8/30 – 9/6/2023 September 7, 2023
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...

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