Grape Growing Diseases

Can anyone tell me what to ask for a harmony Grapevine?
I have a Concord grape that seems to be some kind of disease causes rot or dried fruit before they are fully ripe or mature. I also notice that some of the leaves yellow on the edges and possibly befor the fall of the cold season set at a chemical I can not ask now. I said it is difficult to grow and prosper what kind of grapes in eastern North Carolina. Any advice is appreciated response Eddie.
The level of humidity. You grape leaf mold. It is a type of fungus that likes wet and wet climate. Grapes prefer semi-arid climates, where the leaves remain a hot and dry, as in the Sonoma Valley in California, or 4 5 / SAT Oregon and southern Idaho. You must spray their vines with a fungicide. Security beneath the spray leaves too, or mold grows on the side of the leaf is not treated. Spray again when Berry began to mature. Mold likes the grape sugar.
How To Grow Grapes