VA Grape Disease Risks:6/10-6/17/2026, and downy mildew forecast

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… Read more

Grape Disease Risks: 6/3-6/10/2026 and Downy Mildew Forecast

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.… Read more

Grape Disease Risks: 5/6 – 5/13/2026, downy mildew forecast, and pre-bloom disease management considerations

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… Read more

Grape Disease Risks: 9/17-9/25/2025, and an 8-day downy mildew forecast

Grape disease risks from the NEWA Here is a snapshot from the last week, showing the number of days with the risk of each disease: Ph = Phomopsis, PW =… Read more

Grape disease risks 9/10-17, and ~8-day downy mildew forecast

Grape disease risks from the NEWA Here is a snapshot from the last week, showing the number of days with the risk of each disease: Ph = Phomopsis, PW =… Read more

Grape disease risks: 9/4 – 9/10/2025 and 8-day downy mildew forecast

Grape disease risks from the NEWA Here is a snapshot from the last week, showing the number of days with the risk of each disease: Ph = Phomopsis, PW =… Read more

Grape Disease Risks 8/13-8/20/2025, and an 8-day downy mildew forecast

Grape disease risks from the NEWA Here is a snapshot from the last week, showing the number of days with the risk of each disease: Ph = Phomopsis, PW =… Read more

Grape Disease Risks: 7/2-7/9/2025, downy mildew 8-day forecast, and comments on fungicide resistance

Grape disease risks from the NEWA Here are snapshots from the last week, showing the number of days with the risk of each disease: Ph = Phomopsis, PW = Powdery… Read more

Grape Disease Risks: 6/4-6/11/2025, 8-day downy mildew risk forecast, slides from today’s meeting, and Isomate GBR Z

Grape disease risks from the NEWA Here are snapshots from the last week, showing the number of days with the risk of each disease: Ph = Phomopsis, PW = Powdery… Read more

Grape Disease Risks: 5/29 – 6/4/2025 (+ downy mildew risk for the next 8 days)

Sorry for the delay. I was away due to an extension event. Here are snapshots from the last week, showing the number of days with the risk of each disease:… Read more
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