Blogs
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: 5/14 – 5/21/2025 Here are snapshots 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 Events: 5/7 – 5/15/2025 Here are snapshots 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 Events: 4/30-5/7/2025 and slides from today’s meeting Here are snapshots 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...
- At bloom grape disease management reminders I hope you are enjoying the much-needed rains in your area. It seems a bit early to talk about bloom, but vines are moving much quicker than I anticipated, probably due to the warm April. Bloom begins a critical period...
- Pest Management Guides, 2025 I am sorry, I totally forgot to update the links! For Commercial Grapes, Please Click Here (will open a PDF file) For Home Garden, Please Click Here (will open a PDF file) For other “Grapes and Wines” resources from the...
- Grape Disease Risks: 4/23-4/30/2025 Here are snapshots 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 4/16-4/23/2025 Here are snapshots 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 4/10-4/16/2025 Here are snapshots 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 4/5-/9/2025 and Slides from today’s meeting Here are snapshots 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...
- Early Season Grape Disease Management Reminders 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...
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: 5/14 – 5/21/2025 Here are snapshots 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 Events: 5/7 – 5/15/2025 Here are snapshots 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 Events: 4/30-5/7/2025 and slides from today’s meeting Here are snapshots 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...
- At bloom grape disease management reminders I hope you are enjoying the much-needed rains in your area. It seems a bit early to talk about bloom, but vines are moving much quicker than I anticipated, probably due to the warm April. Bloom begins a critical period...
- Pest Management Guides, 2025 I am sorry, I totally forgot to update the links! For Commercial Grapes, Please Click Here (will open a PDF file) For Home Garden, Please Click Here (will open a PDF file) For other “Grapes and Wines” resources from the...
- Grape Disease Risks: 4/23-4/30/2025 Here are snapshots 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 4/16-4/23/2025 Here are snapshots 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 4/10-4/16/2025 Here are snapshots 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 4/5-/9/2025 and Slides from today’s meeting Here are snapshots 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...
- Early Season Grape Disease Management Reminders 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...
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AREC Fact Sheet
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