Crown gall?

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mgmarty

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I really am interested in the soil drench method, and soaking the vines in Actinovate. I will do this when I plant my new vines this spring.
One thing I noticed is that the gall started with one vine and seemed to spread to the vines next to it. I Have never had a spray program of any sort, as I have never had a mildew problem. I wonder now if spraying for mildew would help.
 

VinesnBines

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Crown gall can spread but it is also in the soil - everywhere. Spray won't help. Clean practices and protecting vines from damage (cold, animals, weed eaters) are the best preventive measures.
 

Dennis Griffith

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I guess the idea is that the Actinovate bacteria colonies in the soil will out compete the gall bacteria, at least that's what I read. And proper hygiene is a must as well. Once upon a time, I would use my dirty hands (after pulling weeds) to rub off sprouts. It dawned on me that I was carries contagion from the soil directly to the wound I was making. Not smart on my part, but wisdom doesn't come from a book, but from a strong desire to not repeat stupid things one has done.
 

Dennis Griffith

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I just had an revelation. While out cleaning around vines this morning, I noticed small snails around the base of several vines. So I wondered if there was a connection between them and crown gall. Some investigation shows that there may be. It seems to be a concern for blueberry growers so why not grape vines. I guess since they live in the soil, they could be carriers of the Agrobacterium that causes galling. Any knowledge to share or ideas on this?
 

mgmarty

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Well I know I don’t have any snails in the vineyard. I have tons in my flower beds.
I have torn out all my Baco vines. I feel they were prone to frost damage, thus the gall damage.
 

Dennis Griffith

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I'm having trouble keeping my Cab Franc vines alive as well. As for the snails, I noticed 2 or 3 on the base of several vines this morning. I think they are working on the bark, which may be allowing the gall bacteria in. Of course the few I found today will no longer bother me, there are probably bunches more I don't see. I'm going to get some cheap beer and set some 'snail traps' out to see what I catch. I'm just not sure about using some of the snail baits on the market, unless someone here has tried it before.
 

mgmarty

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So whatever this is, it crumbles. It’s attached to the outside of the trunk at every nodule.
 

Dennis Griffith

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I struggle with same issues. I wish I could get Gallex in this state. Currently it's unavailable in this state. It's a 'paint-on' anti-bacterial treatment designed for this issue.
 

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