[Growwine] Help to determine cause of Cab-Sev symptoms

[R Mtz]

Leaf nutrient deficiency:
 
Google has a great image and info at: http://en.wikipedia.org/wiki/Potassium_deficiency_(plants)
 
The image does not show as much chlorosis as your image but it is one of the mobile nutrients showing up on new growth instead of the older parts.
Web article includes some remedial alternatives.
 
Looking forward to hearing the resolution.  Will low pH restrict availability of K?  Don't know what else will tie it up.
 
 Ron Martinez 



From: canadavintage at hotmail.comTo: growwine at littlefatwino.comDate: Thu, 17 Jul 2008 15:44:53 -0400Subject: Re: [Growwine] Help to determine cause of Cab-Sev symptoms


James, et all.Thanks for the input, I think we are getting to the bottomof this problem. I do have a question: How does one go about liming soil?  I have 5 hectares, not exactly something I can do with a shovel and wheelbarrow. Anthony Carone (Zone 4b-5a)Canada Vintage - Carone Vineyards, a division of Carone Enterprises~~~~~~~~~~~~~~~~~~~~~~www.CanadaVintage.com~~~~~~~~~~~~~~~~~~~~~~



From: longdogwines at kos.netDate: Thu, 17 Jul 2008 14:53:35 -0400To: growwine at littlefatwino.comSubject: Re: [Growwine] Help to determine cause of Cab-Sev symptoms
ANTHONY
sure looks like potassium deficiency to me. i have had the same problem with my pinot noir. 
whack it with a foliar spray of 1-2 litres of k-fight 0-0-25 and throw in a bag of epsom salts ( 20 kg)
do it now and then 1 week from now - don't spray until it drops below 20c or you'll burn your leaves.
all the above is based on a spray volume of 1000 litres. YOUR ALSO GOING TO HAVE TO LIME THAT
SOIL SOON OR YOUR VINES WON'T FIND ANY MACRO OR MICRO NUTRIENTS.
ciao,

james lahti
LONG DOG WINERY



On 17-Jul-08, at 11:41 AM, Canada Vintage wrote:
Hello All,I need help in indentifying a problem I have with a section of my Cab-sev vineyard. The leaves are demonstrating a bizarre yellowing and redenning. The vines are eight years old, and have produced normally for the last five. However, now these vines have very small fruit clusters, the vines are not vigorous at all and the leaves start to change color mid season. We have run several soil samples and did come up with an unsually low pH of between 4.5 to 5.0. All other nutrient levels seem to be within normal parameters. I can send those along if required. I have attached a few images at
 
http://www.sasabee.ca/grapes/CS0708.htmAny help would be greatly appreciated.Anthony Carone (Zone 4b-5a)Canada Vintage - Carone Vineyards, a division of Carone Enterprises~~~~~~~~~~~~~~~~~~~~~~www.CanadaVintage.com~~~~~~~~~~~~~~~~~~~~~~

From: canadavintage at hotmail.comTo: growwine at littlefatwino.comDate: Wed, 16 Jul 2008 15:40:57 -0400Subject: Re: [Growwine] copper and sulphur supplier in QuebecAgro100 in St. Thomas, near us.CAll Jean Prince at 450-759-8887or450 758-7762 for his cell.Anthony Carone (Zone 4b-5a)Canada Vintage - Carone Vineyards, a division of Carone Enterprises~~~~~~~~~~~~~~~~~~~~~~www.CanadaVintage.com~~~~~~~~~~~~~~~~~~~~~~

From: laura-sabourin at sympatico.caTo: growwine at littlefatwino.comDate: Mon, 14 Jul 2008 22:56:26 -0400Subject: [Growwine] copper and sulphur supplier in Quebec
Mike of Vignoble Les Pervenches in the eastern townships is looking for a good supplier. Any advice ? 
 
Laura 
 




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