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[anton ptak <antonptak@gmail.com>]

We pruned our grapes early march - all looked healthy prior to pruning.  
All of our vines are young - in their 2nd and 3rd years.  A few weeks 
later, following 2-3 weeks of record warmth, barely any rain, we noticed 
an issue on our 3rd year Swenson Red grapes, but none of the other 
varieties.  Our pruning cuts all appear darkened or black and are oozing 
a watery (non viscous) liquid - maybe water??  I can't identify this 
problem in any of the guides I have - anyone have any knowledge of a 
similar condition?  If so, are there any mitigation techniques?  We were 
spraying copper on a few things in the orchard, so we did hit these 
grapes with the copper spray also last weekend.

Thanks,
Anton Ptak
zone 4a W. Wisc