VASCM: Cluster Thinning

[Prudy Foxx]

Thanks for the great article TG.  It really illustrates the many perspectives on this topic.

In my experience, fruit thinning is incredibly site specific and depends on numerous factors including age of the vine, clone, variety, soil and climate conditions of year and site…… on and on.  Often young vines in their newly formed exuberance  tend to set way more fruit than they can adequately ripen.  In a good year the grower will ripen that fruit but at the expense of root growth.  This may compromise future yields for years to come.

Like so many aspects of viticulture there is no one formula to fit all situations.  Older vines tend to be more stable.  
On Jun 11, 2013, at 8:04 PM, TG at ChateauHetsakais <till.guldimann at chateauhetsakais.com> wrote:

> Jim
> Interesting article my friend david Fenyvesi found on this subject
> 
> http://www.enologyinternational.com/yield/yieldvsq3.html
> 
> Bat
> Till
> 
> 
> Till Guldimann - 21891 Via Regina, Saratoga, CA 95070 - Tel +1 (408) 741 1270 - Mob +1 (408) 666 3541- www.chateauhetsakais.com
> 
> 
> On Jun 11, 2013, at 7:24 PM, Jim Varano <snipewarrior at comcast.net> wrote:
> 
> Dear Members:
> 
> Acouple of quick questions......
> 
> When should you thin the grape clusters?
> How many clusters per shoot ( 2  I believe) ?
> How many leaves per cluster to support ripening? ( 10 per cluster )?
> What if I have shoots that don't have that many leaves now, do I remove cluster or let leaves grow ? (example: small shoot with cluster and only 5 leaves )
> How long should I let the shoot grow( 4-6 ft ,6-8 ft, etc.)
> 
> Thanks Guys
> Jimmi V. 
> 
> Sent from my iPad
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