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F[_2_] F[_2_] is offline
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Default Phylloxera on concord grape vine...

Thank you for the recommendations!

Jeff



On Nov 9, 6:36 pm, shbailey > wrote:
> There don't seem to be definite recommendations for spraying for
> foliar phylloxera. If you aren't currently following a general spray
> program, maybe it would help control the phylloxera (as well as leaf
> hoppers and berry moth) if you did. General recommendations for
> spraying with fairly benign stuff would involve using carbaryl,
> malathion, or methoxyclor pre-bloom and then a few times post-bloom.
> You can find days to harvest limitations on the labels.
>
> On Nov 8, 8:13 am, F > wrote:
>
> > Hmm... Maybe then this isn't an issue (as far as the grapes are
> > concerned).

>
> > The galls were spiked and green on the underside of the leaves, but
> > the vine itself seemed to be growing very well this year. So, if I
> > *can* spray something, what would that be, and when would I spray? (I
> > assume before the grapes start growing)

>
> > Thanks again for all the input!!!

>
> > Jeff

>
> > On Nov 7, 11:07 pm, shbailey > wrote:

>
> > > There are leaf forms and root forms of phylloxera. The root form is
> > > the one that will kill the vine. Both forms usually don't affect the
> > > same types of grapes, so maybe some foliar spray next spring can take
> > > care of your problem. Phylloxera galls are rough, rounded, and
> > > spiky. There is also a grape tumid gall, which is round, reddish, and
> > > succulent. (Information from The Grape Grower, by Lon Rombough)

>
> > > On Nov 7, 4:57 pm, wrote:

>
> > > > Well, I'm pretty sure they're concord grapes -- because I like
> > > > concord, and that's what they taste like.

>
> > > > As far as whether or not it's phylloxera, I took a leaf that had a
> > > > bunch of galls on it (easy, as most of the leaves had them) to a
> > > > gardening store, and after some discussion and research, we "verified"
> > > > that's what it was. This vine is relatively young (i.e. only a few
> > > > years old, I think). The reason I don't know much about the vine is
> > > > that it was here and growing before I even knew what it was. I knew
> > > > there were vines on the fence (towards the back of my property), but
> > > > this is the first year that it produced *anything*.

>
> > > > I live in Southern Wisconsin.

>
> > > > Thanks for all of your feedback! I really appreciate it.

>
> > > > Jeff

>
> > > > On Nov 7, 12:04 pm, AxisOfBeagles > wrote:

>
> > > > > Agree with the prior poster - are you sure you have phylloxera? First,
> > > > > phylloxera attack the vines, not the grapes. If you have phylloxera,
> > > > > but still have grapes, the grapes should be fine. Your problem would be
> > > > > the mortality of your vines.

>
> > > > > What are the symptoms that cause you to suspect you have phylloxera in
> > > > > your vineyard? What part of the country are you in?

>
> > > > > Second - as the prior poster asked - are you sure you have Concord? As
> > > > > best I know, Concord is of the labrusca species - which is phylloxera
> > > > > resistant (phylloxera may be present, but to the best of my knowledge
> > > > > do not present a mortality threat to your vines).

>
> > > > > On 2007-11-07 08:26:46 -0800, said:

>
> > > > > > Well, it looks like my grapes are infested with grape phylloxera.
> > > > > > Since there's no known "cure" for this problem, I have to ask: are my
> > > > > > grapes even edible? Or does the whole vine have to be cut down and
> > > > > > burned? And if so, how long before I can re-plant (with resistant
> > > > > > rootstock)?

>
> > > > > > Thanks so much for your help.
> > > > > > Jeff