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:
http://www.blackcatsystems.com/concordgrapes.jpg
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 :-(
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Chris Smolinski
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Try posting on rec.crafts.winemaking . Lots of experienced grape growers there. Steve

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Did you spray them with a fungacide? I used to live in Arkansas and had to spray them with Captain (pronounced Cap-tane) every spring. That is about the only problem we ever had with grapes. No bug problem.
Dwayne

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No, I didn't. Perhaps I will have to consider it for next year, I suspect it is too late this season.

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Chris Smolinski
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You might try it if you have any left. Check out dthe information sheet abougt how long before harvest you should stop using the product. I always did it early enough to not have to worry about it.
Dwayne

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I have a Niagra grape vine in my yard. This year, the leaves seem to be in the state of suspended animation - no growth. The grapes are developing, but there has been little leaf growth and no new vine growth. Maybe it's just an off year for grapes.

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On Sun, 17 Jul 2005 15:45:03 -0400, Peggy O'Grady wrote:

My concord grape vines have the same disease. I have a lot of stunted discolored berries. I tried fungicide last year, didn't help but I only sprayed once at the beginning of the season. Frankly it seems like a lose-lose proposition. I suppose that it might be possible to get grapes if I were to spray them repeatedly but I even if that worked who wants to eat fungicide covered grapes.
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The fungicide spraying takes place before the grapes come on, so you don't have to worry about it if done right. Grapes require 3 inches of water per week while fruiting. Are yours getting that much? I went to my extension office and gathered all the information I could. If you cant find anything at yours, get on the internet and type in "growing grapes". Check out the items that come up that are from your local colleges. That should put you on the right track.
Dwayne

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On Mon, 18 Jul 2005 07:40:30 -0500, Dwayne wrote:

It's been a very wet year so I assume that they are getting enough water.
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