Banana    kerala.INDIA

Please inform me a cure for black sigatoka. I am having persistent problem in my plantation. I have used Psudomonos [organic fungiside] and trichoderma,....not effective.Please help.

Posted by: sethumadhavan (1 point) sethumadhavan
Posted: November 28, 2015

Saptashwa Bhattacharya commented,
As a preventive measure, Alstasan Silvox can be sprayed on the plants/ soil just before harvest. Even the anti-fungal properties of Silver Hydrogen Peroxide can help you with the disease control.

Moreover , the fungal spores are spread rapidly in moisture laden winds, it is advisable to have your cultivation in a more protected area.

To know more, visit us at

almost 5 years ago.


How bad is the problem? Have a look at the image. What stage are you at?

Most bananas are susceptible to BSD (Black Sigatoka Disease). It is extremely difficult to control. In large commercial plantations. But the costs associated with this control can be 15-20% of the final cost. Are you in a position to but chemicals? Do you want to use chemicals?

An important factor limiting disease severity is maintaining balanced nutrients. "A balanced nutrition results in high rates of leaf emergence, leading to better tolerance and possible escape from the effects of Mycosphaerella leaf spots. Banana plants are more prone to higher attack of BS in soils deficient in potassium or with unbalanced N/K relationship ." http://www.fao.org/3/a-as177e.pdf

The same article discusses nitrogen, calcium and potassium. Have you been adding fertilizer? Can you? How quickly are new leaves appearing.

Irrigation is also important. Please describe this for your fields.

Sanitation is also important. What are you doing with the infected leaves? How big is the plantation and are their nearby plantations of bananas.

Please provide answers to these questions and we will try and help. Also, please provide images.

Posted by: David Hughes (55 points) David Hughes
Posted: November 29, 2015

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