Can anyone identify this disease

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JT101

Junior
Joined
Feb 24, 2017
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Hi all

Might have one or more diseases. Setup my mini vineyard on my allotment in south East London. Mostly seyval blanc and regent, not on rootstock. Grown from cuttings.

As you can see from the photos, many have that classic bumpy surface, with a somewhat yellowy powder on the back. And many leaves have curled up and turned brown: here is a video of them:

Definitely affecting the vine. I have one other vine on the plot (may be a dofferent variety since i did initially have several) which seems to be unaffected, and has plenty of bunches of grapes, so I would expect the affected ones to have similar growth, but any bunches seem to have withered.
 

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