7 months ago

Disease in tomatoes from India

I am from india andhrapradesh. In my area lot of farmers farming tomato field,but there are lot of diseases..,please tell whats the proublem,and how can its control....?

india
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3 answers

Dr. Raffaele Giurato 7 months ago


Necrosis are most likely suffering from a fungus. I think it could be Alternaria solani.
Purple leaves affect other problem.
Best regards,
RG

emmanuel Luseno 7 months ago

The disease seems to be early blight caused by Alternaria solani which can be prevented at transplanting or controlled by use of copper based fungicides. Try a simple Bordeaux mixture i.e a combination of CuSO4, slaked lime Ca(OH)2 and water in a ratio of 1:1:1.

alex ignatov 7 months ago

I support Raffaele - it can be Alternaria sp., and purple color can be caused by phosphorus deficiency.

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