[nafex] grape problem

Brungardt, Sam (MPCA) sam.brungardt at state.mn.us
Tue Mar 27 13:30:19 EDT 2012

Anton, it's very common for grape vines to bleed after pruning, particularly if the pruning's done later in the winter.  In thhis case, the Swenson Red may be nearer to breaking bud than your other cultivars.  The bleeding is normal and will not hurt the vines. -- Sam Brungardt, St. Paul, Minn.

-----Original Message-----
From: nafex-bounces at lists.ibiblio.org [mailto:nafex-bounces at lists.ibiblio.org] On Behalf Of anton ptak
Sent: Tuesday, March 27, 2012 11:47 AM
To: nafex at lists.ibiblio.org
Subject: [nafex] grape problem

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.

Anton Ptak
zone 4a W. Wisc

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