0
points
Root rot?

Tomato    Alabama

Just need help figuring out what happened to my tomato plant. I live in lower Alabama and am inclined to blame this on heavy, daily rain. Any insight and/or advice for the future would be greatly appreciated!


Posted by: Kelsey King (1 point) Kelsey King
Posted: August 21, 2016




Answers
1
point
Kelsey,
It looks very similar to bacterial stem rot caused by Pectobacterium, Dickeya, or Pseudomonas species. If you could cut the diseased stem through and make picture, the diagnosis could be more exact.
The threat of this disease can be reduced by early treatment of plants with copper-based fungicides, and antibiotics streptomycin or kasumin, available in the States. Some biological pesticides might be useful too, but, I have no experience with any one of registered in USA.


Posted by: alex ignatov (1 point) alex ignatov
Posted: August 21, 2016


Kelsey King commented,
So that growth is on the main stem of the plant. If there is a small tomato growing off of that, will it inevitably die ? Or can I salvage with abx? You mentioned early treatment, but unfortunately this has been going on for weeks. Thanks so much for your help!
over 7 years ago.



1
point
I agree, Alex. I find it, usually, in hydroponic crops: exceed water irrigation is one of the many causes for this diseas. Pathogen fungi and/or Bacteria are opportunist diseas causes. Fusarium oxysoporum can infect plant in this case. I recommend to optimize the irrigation and, possibly, you use hydrogen peroxide for preventive irrigation in healthy plants.

PS: excuse for my bad english! :)


Posted by: FRANCESCO MAUGERI (2 points) FRANCESCO MAUGERI
Posted: August 22, 2016


Kelsey King commented,
Just pour the h2o2 into the soil? And your English certainly not bad!
over 7 years ago.

FRANCESCO MAUGERI commented,
I use H2O2 20% concentration, called Oxyclean (produced by Biolchim) for agricultural use. I use it for 2lt/1000 mq (in irrigation) or ml 500/100 lt (5ml/lt) for foliar treatments. For small crops (as yours plants) you use foliar treatment dose (you can add 25% plus at 5ml/lt). Search for others commercial products (i don't know if Biolchim works in your country).
over 7 years ago.



0
points
The white growths are just roots and not an indication that anything is wrong with the plant. They are called aerial or adventitious roots and would turn into regular roots if they were in the soil. They grow from the bumps on the stem, usually developing where there is excess moisture.


Posted by: Charlie B. (5 points) Charlie B.
Posted: August 23, 2016




0
points
Hello Kelsey, if I were you I will pull this plant out and put it in a trash bag and put it in the dumpster. This is a symptom of a bacterial disease named Pseudomonas corrugata, BUT!!! if there are no other symptoms (chlorotic lealets, brown to blackish stem lesions), it is probably physiological.


Posted by: Ricardo Prieto (2 points) Ricardo Prieto
Posted: September 2, 2016




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