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Grape cluster issue

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havlikn

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I have a friend that sent me a picture of this cluster from a foch vine. No other issues evident on the vine. Canopy looks healthy. Any thoughts?View attachment 49449
 

sour_grapes

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Sorry, I was not able to open the attachment. Maybe you can upload the pic by hitting the "Upload a File" button?
 

balatonwine

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See:

http://articles.extension.org/pages/33106/causes-of-poor-fruit-set-in-grapes

From the single picture: there seems to be slight white film and dead tips would suggest to me a fungus. The health of the canopy may not be relevant even if a fungus is the problem. If the clusters were not treated at the most opportune and appropriate time before flowering, and/or if especially poor weather occurs during the bloom, fungus issues may develop just on the clusters.
 

marquettematt

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Definitely fungal. I hardly ever see any issues on mine except for botrytis but that's on mature clusters. I'd say DM.
 

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