At Winchester, we had four nights (6/4-6/7/09) with average temperature above 55F and average relative humidity in 90% or more. During last night, average temperature was about 69F, and average relative humidity was little low, but still around 80% range. These warm humid nights favor downy mildew fungus to produce spores.
With rain events in weather forecast, downy mildew would be a major concern as I noted in the previous post. Please review your vineyard situations (as I went through in the previous post), and be prepared. Hopefully, rain does not hit us as in forecast, but you never know.
With rain events in weather forecast, downy mildew would be a major concern as I noted in the previous post. Please review your vineyard situations (as I went through in the previous post), and be prepared. Hopefully, rain does not hit us as in forecast, but you never know.
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