North American Fruit Explorers mailing list at ibiblio

["Richard O'Barr" <aatopgunaa@mindspring.com>]

It would seem to me to be a transfer of nutrients to the cluster rather than
tyhe need for sunlight on the fruit.
                                                                    Topgun
                                                                    Zone 7
----- Original Message ----- 
From: "Tom Olenio" <tolenio@sentex.net>
To: <growwine@kawartha.com>; <nafex@lists.ibiblio.org>
Sent: Tuesday, August 05, 2003 9:12 AM
Subject: [NAFEX] arbor grapes


> Hello All,
>
> I would like to know if anyone who grows grapes on arbors has similar
> experience to this;
>
> I was under my arbor, pulling down yellowing leaves from the underside of
the
> arbor canopy, that I assumed had died due to lack of sunlight.  Then I
noticed
> that many of the yellow leaves were near clusters of grapes.
>
> This got me wondering if the bunch of grapes released a
hormone/gas/chemical
> that influenced the cessation of nearby leaves.  Not a strong reaction,
but one
> significant enough to affect leaves receiving little sunlight.
>
> This would make sense from a plant/hormonal standpoint.  A plant wanting
it's
> seeds to reach maturity wanting more sunlight on the fruit, and
discouraging
> leaves nearby.  Just a wild stab of an idea on my part.
>
> I do not think you would find this on a trellis system, as arbors have
much
> more dense, stationary foliage.
>
> Your observations?
>
> Later,
> Tom
>
>
>
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