|
|
Post by oldmobie on Jun 14, 2015 17:24:42 GMT -5
 I first thought this was too random to put my finger on it, but I see now that it's (at least mostly) where grapes touch. In the picture you can see some of them are dimpled. How bad is this? Should I keep removing the ones that look like that, or are they edible? Will it spread to the normal grapes? Should I thin so that they don't touch? I assume it's related to the moisture and humidity. My vine's only produced once before, last fall. I didn't notice anything like this. For what it's worth, we don't know what type it is. It MAY be concord. It matures a purplish red. |
|
|
|
Post by reed on Jun 15, 2015 4:07:08 GMT -5
Bunch rot, clump cancer, don't know what it is actually called but it is bad news. I rarely get decent grapes because of it. I'm sure there is something you can do with sprays and the like but I don't do any of that. I thinned my older vines to the extreme this spring in hopes of increasing air flow and sun and haven't seen it yet on the Concord. My white ones, I think they are Himrod, are probably 50% ruined already. I don't know that it really helps to remove them and no they are not fit to eat.
I planted 7 or 8 new kinds this spring in hopes of finding some that don't get this so bad, it will be a year or two but if one or more works out I'll report which kind.
|
|
|
|
Post by greenfinger on Jun 15, 2015 13:39:48 GMT -5
www.oardc.ohio-state.edu/fruitpathology/organic/PDF/OSU-Organic-Grape-Diseases.pdf"organic" controls. Apparently large factor is lack of air flow. I have a similar problem. I have yet to prune them, though I have the neighbor's permission. His vines, you know.  I plan to pick up the litter this year, prune to stump with buds, and organic fungicides that year. Hopefully one year will be enough to balance it back to no treatments to manage it. Just keeping good air flow available. Here's to good intentions.
|
|
I plan to pick up the litter this year, prune to stump with buds, and organic fungicides that year. Hopefully one year will be enough to balance it back to no treatments to manage it. Just keeping good air flow available. Here's to good intentions.