Can anyone help me with my Grapes

[ginbart]

I have grapes that are getting rotten before they are getting fully grown.

Should I take off some of the vines that have no grapes on them.

Thanks for your help.

 

[Ridgerunner]

Do you have leaves with brown spots too. Maybe it is this?

Grape Black Rot
http://ohioline.osu.edu/hyg-fact/3000/pdf/HYG_3004_08.pdf

 

[Rhodie Ranch]

Not enough air circulation. Remove a lot of leaves, especially below the plant (if trellised or supported), so that the clusters can get some air.

 

[Mattemma]

I have noticed this too with mine.Will get to work on trimming and spacing.

 

[ducks4you]

I'm so sorry!
Do you prune your vines? I overpruned last year, taking away the canes that grew in 2008 (you know, the ones that were supposed to bear fruit in 2009?) <--This was ME, last year!!!!!
This year my vines are positively loaded. I bought the house with the vines there. A previous owner had put them in a sunny spot with good drainage and I keep the grass beneath them neatly clipped. Though your problem is probably fungal, you can have a bad crop if your vines are NEVER pruned. Several sources suggest pruning in late winter/early spring, But I've heard of folks who do it in the late fall, too successfully.
BTW, I would either throw the mummies in the garbage that goes out ever week--bagged in plastic OR burn them on your burn pile (if you have one.)

 

[Rhodie Ranch]

We grow table grapes for our eating, and an acre of wine grapes. We don't prune until almost the end of May, as our last frost date is about the end of May. Zone 7 at 2100 ft. Frost gets the shoots that pop up, after trimming, and subsequently will reduce the crop by a large margin.

 

[ducks4you]

Bad post, murphysranch--you are NOW my new "grapes" BFF!!!!
Let's talk about the wine-making....

 

[Grow 4 Food]

So if I prune them back now is that a problem? My last frost date was about 6 weeks ago. I am having the same sort of problem with the rot but I know mine arent getting enough air. Do I need to wait or do I need to work them over? Will it save the ones that arent rotting?