0
points
Tomato plants are dying

Tomato    None Given

The plants are just dying, Some have produced fruits (tomatoes ) but they don't develop and they just die.


Posted by: mbonea (1 point) mbonea
Posted: June 9, 2016


Dr. Ravishankar Narayana commented,
Please upload some images.
over 3 years ago.



Answers

1
point
White mold by sclerotinia sclerotiorum can give white cottony growth. Open the stem and look for hard black structures (sclerotia)

Is the black substance growing on the tutors? and maybe infecting tomato plants? or vice versa? please provide more picture with detailed symptoms and some indications on the spread of the observed anomalies


Posted by: Adil Essarioui (4 points) Adil Essarioui
Posted: June 11, 2016




0
points
It looks like wilt disease. The wilting of tomato may occur due to following pathogens
1. Bacterial wilt caused by Ralstonia solanacearum
2. Fusarium wilt caused by Fusarium oxysporum
3. Verticillium wilt caused by Verticillium albo-atrum.

To know the exact causal organism please provide the following information:
a. Is wilting one sided?
b. Is there any discoloration of vascular tissue? (Cut the infected stem near base longitudinally to see brown vascular discoloration)
c. Percent of field infected?
d. Recent agronomic practice carried.
e. Weather conditions etc.

Also you can do ooze test by cross cutting infected stem and dip in a glass of water. If it is bacterial wilt a white, slimy substance will ooze into the water within few minutes.


Posted by: Dr. Ravishankar Narayana (8 points) Dr. Ravishankar Narayana
Posted: June 10, 2016




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