Black Rot Treatment for Grape Vines

osiris1975(5b)July 17, 2009

Hello,

I have 2 newly planted niagara grape vines that appear to have contracted black rot, one more than the other. I have read that fungicides are effective against this disease, but that you have to use them within 21 days of initial infection, and I think we may be passed that. I'm wondering what advice people can give for the elimination of this problem.

Thanks in advance!

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nandina(8b)

A search on the subject will give you the information needed. However, also include the following in your search...grape black rot disease + cornmeal. There are reports that cornmeal spread on the ground around grapes every two weeks does control the situation. Although I have run numerous cornmeal/fungus experiments I have not tested it on grapes and can only suggest you read the experiences of others.

    Bookmark   July 22, 2009 at 8:09AM
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osiris1975(5b)

Thanks, I had done a search, everything I found was preventative. Was hoping to find a way to eliminate an infection once it has started. So far neem oil seems to be doing a decent job of controlling the spread. I will definitely look into the cornmeal angle.

    Bookmark   July 22, 2009 at 9:03AM
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