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Concord Grape disease?

I seem to have some disease (or lack of nutrients?) on my concord grapes. The fruit, which is not yet ripe, is getting dark spots and areas on it. I had this same problem last year, I thought maybe it was due to the heavy rains we had.

Figuring a picture is worth a thousand words, I took a photo of some of the fruit:

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There doesn't seem to be anything wrong with the leaves or vines.

Maybe someone can identify what the problem is, and what some solutions might be? I was looking forward to making some grape juice this year :-(

Reply to
Chris Smolinski
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Chris,

That looks like Black Rot, and kinda well established on the fruit pictured. Nova or Manzate areprotectant sprays, but it looks like you need an eradicant. Google it up.

Good luck.

Reply to
Mike McGeough

Mike,

Nova is also an eradicant. The best I know of. It's systemic action has "kick back" of about 5 days.

Bob

Reply to
doublesb

Ah... That's good. I knew it was systemic, but I didn't remember that it would halt an outbreak.

Last year I got tired of buying OTC packages of Nova for my small planting (50 vines), and found a source of Myclobutanil at a higher concentration. I calculated out the dose for my tank and made a specific scoop for that purpose. The only drawback was that the package I had to buy, 1 lb, will last me for 100 years. Literally! So I'm glad you think so highly of the stuff.

By "kick back", do you mean that it can halt a 5 day old outbreak, or that it takes 5 days to become effective systemically, or what?

Thanks

Reply to
Mike McGeough

Thanks Mike. Now to see what I can find locally to deal with it.

Reply to
Chris Smolinski

Chris,

If you have a Lesco near you , Myclobutanil is sold under the name of Eagle.

Bob

Reply to
doublesb

Mike,

It means that an infection that started 5 days ago will be eradicated. I'm a big Myclobutanil fan. Never seen anything as good at stopping what it's advertized to stop than Myclobutanil. Awesome stuff. LIke you said, it really is cheap when you look at how long it lasts and the job it does.

Bob

Reply to
doublesb

Mike,

Where did you by your pound of myclobutanil????

TIA,

Bob

Reply to
doublesb

Since it is a systemic, arent you afraid to eat or use any of this years grapes? I have never used a systemic on any of my fruit and vegies for that reason.

Dwayne

Reply to
Dwayne

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