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Septoria on tomato leaves

Tomato    None Given

We have high incidence of septoria on tomato crop this year. It is not helping us even after spraying fungicide. Please provide more information on the disease and its control measures.


Posted by: mer sanjay (1 point) mer sanjay
Posted: August 6, 2016


Adil Essarioui commented,
What kind of fungicides are You using? If You have always used the same product or products from the same family you may be selecting for résistant pathogen population. Make sure to alternate fungicides with different modes of action. Also spray when there is no wind or high température to ensure better effectiveness
over 3 years ago.



Answers

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Mer,
if your fungicides do not work, try to use combination of new fungicides with copper ( Bordeaux Mixture, Kocide, Tenn-Cop,Liqui-cop, Basicop):
azoxystrobin ( Quadris, Amistar); chlorothalonil ( Daconil, Bravo, Echo, Fungonil), mancozeb and maneb (Dithane, Penncozeb, Manex, Mancozeb, Maneb); potassium bicarbonate ( Armicarb 100);
Ziram
Source: https://extension.umaine.edu/ipm/ipdd...


Posted by: alex ignatov (33 points) alex ignatov
Posted: August 7, 2016


mer sanjay commented,
Dear alex In my country ziram, armicard 100 are not available. So please tell me which are the other combination I can go for. If not let me know the possible active ingredient of the products. Thanks
over 3 years ago.



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Dear alex
In my country ziram.armicard 100 not available.so please tell me combination about this.I will try.either possible tell me technical content this product I will use.


Posted by: mer sanjay (1 point) mer sanjay
Posted: August 8, 2016




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What kind of fungicides are You using? If You have always used the same product or products from the same family you may be selecting for résistant pathogen population. Make sure to alternate fungicides with different modes of action. Also spray when there is no wind or high température to ensure better effectiveness


Posted by: Adil Essarioui (4 points) Adil Essarioui
Posted: August 8, 2016




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The photo does not express its Septoria leaf spot. Only one branch of plant will never show fungal disease. Can you put more photos with some closeups.
Moreover, other part of the plant seem to be healthy, yellowing may be due to mechanical damage to branch.


Posted by: Pankaj Paratey (1 point) Pankaj Paratey
Posted: August 13, 2016


Charlie B. commented,
I agree. The photo is definitely not Septoria leaf spot. There are no leaf spots - no necrosis, no dead and dying leaves hanging on the plant. Nutrient deficiency maybe??
over 3 years ago.



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