Information and discussion regarding garden diseases, insects and other unwelcome critters.
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#1 |
Tomatovillian™
Join Date: Apr 2014
Location: SE Georgia
Posts: 1
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My tomatoe vines are turning brown/black while the plants are still green and some have fruit. Can someone identify what this is and if it's treatable or are the plants doomed? I've attached photos of the problem. Any advice or help ia greatly appreciated.
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#2 |
Tomatovillian™
Join Date: Jul 2015
Location: Southeastern Pennsylvania
Posts: 1,069
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Oy. The photo is a bit blurred, but that looks like it might be gray mold. I hope I'm wrong.
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#3 |
Tomatovillian™
Join Date: Oct 2012
Location: Vancouver Island
Posts: 5,929
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Timber rot or southern stem blight possibly.will await the opinions of the more southern experts.
KarenO |
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#4 |
Tomatovillian™
Join Date: Feb 2013
Location: Southeast Kansas
Posts: 878
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Alternaria stem canker is what I think it is because of the concentric rings.
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#5 |
Tomatovillian™
Join Date: Oct 2012
Location: Vancouver Island
Posts: 5,929
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I would say you nailed it PATIHUM
KarenO |
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#6 |
Tomatovillian™
Join Date: Feb 2012
Location: Newfoundland, Canada
Posts: 6,794
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Ditto, nailed it Patihum!
![]() We get grey mold (Botrytis) here and some Alternaria (early blight) - and on the stems, grey mold is worse in my experience. the Alternaria stem lesions, with the concentric rings, tend to be shallower and the plants can survive for quite some time - even months if not badly affected. The grey mold on stems will usually eat through and kill the stem within a week. That is in a greenhouse environment where the plants are protected from rain but get high humidity. |
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#7 |
BANNED FOR LIFE
Join Date: May 2014
Posts: 13,333
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I didn't know what that was. I looked up a site http://tomatodiseasehelp.com/alternaria-cankers
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#8 |
Tomatovillian™
Join Date: Feb 2012
Location: Newfoundland, Canada
Posts: 6,794
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Here's a picture on the stem:
http://aggie-horticulture.tamu.edu/v...rnaria-canker/ They say it will kill the plant when it girdles the stem. ![]() Some varieties are resistant, maybe that's why they didn't kill the ones I saw it on. ![]() |
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