North American Fruit Explorers mailing list at ibiblio

["Lon J. Rombough" <lonrom@hevanet.com>]

Title: Re: [NAFEX] Grape Leaf

Looks like normal end-of-season senesence to me.  If the nights are cool, that can start the process even without frost.  Eona has a riparia parent that is at least partly tuned to day length to make it go dormant, so that could be contributing, too.
-Lon Rombough
> From: Thomas Olenio <tolenio@sentex.net>
> Reply-To: nafex@lists.ibiblio.org
> Date: Tue, 24 Sep 2002 12:29:09 -0400 (EDT)
> To: "'nafex@lists.ibiblio.org'" <nafex@lists.ibiblio.org>
> Subject: RE: [NAFEX] Grape Leaf

> Hi,
>
> We are in southwest Ontario, near Kitchener, or about 1.5 hour drive north
> of lake Erie.  If we are getting air pollution it is drifting in from
> Illinois at least 2-3 hours drive to the southwest.  We are in an
> agricultural area, and very rural, about the same as zone 5 in the U.S..
>
> We are having cool nights, but no frost yet.  We are getting lots of rain
> after a long summer drought, and I am begining to see powdery mildew on
> all the grapes.  I did not have to spray all summer, as pests never showed
> up (except grape beetle in the spring).
>
> But I do not know what this yellowing is.  Just hoping it is tied to the
> end of the season.
>
> Later,
> Tom
>
>
>  --
> Southwest Ontario
> Canada Hardiness Zone 6a
> (similar to US zone 5)
>
> On Tue, 24 Sep 2002, Raby, Brian {D204~Indianapolis} wrote:
>
> > Tom,
> >
> > Give us your location (again).  The first thing that I thought of was air
> > pollution.  Are you downwind from industrial factories?
> >
> > Brian
> > Sheridan, IN
> >
> > -----Original Message-----
> > From: Thomas Olenio [mailto:tolenio@sentex.net]
> > Sent: Tuesday, September 24, 2002 10:34 AM
> > To: nafex@lists.ibiblio.org
> > Subject: [NAFEX] Grape Leaf
> >
> >
> > Hello,
> >
> > Can anyone tell me what is going on with this grape leaf;
> >
> > Image:
> > http://www.ibiblio.org/ecolandtech/pcwiki/pcwikiufu/Eona1.jpg
> >
> > There are three varieties and primarily the Eona is displaying this.
> >
> > Is it just the end of the season, and too be expected?
> >
> > It was fine all summer.  Both vanessa and st. croix are either not
> > affected or very, very little effected.
> >
> > Thanks,
> > Tom
> >
> >
> >
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