Grape Disease Risks: 7/30-8/6/2025, an 8-day downy mildew forecast, and slides from today’s meeting

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 mildew, BR = Black rot, and DM = Downy mildew. N/A means there is no data or some issues with the NEWA  (I reported to the NEWA, but I am not sure when/if they can fix it…)

Downy mildew risk forecast

We generated the downy mildew forecasted risk based on the past seven days and an 8-day weather forecast. Please click the figure below to enlarge. Some locations have high infection risks, but overall, we may have a bit of a break. The VA Wine Board and Southern Region Small Fruit Consortium have supported this effort.

Slides from today’s meeting

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