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Productive Management of Yellow Sigatoka disease in Banana

Posted by Dr. Asha K M on

Productive Management of Yellow Sigatoka disease in Banana 

Banana is one of the most important fruit crops of India which is rich source of vitamins, minerals and fibre. It is one of the energy providing fruits which is consumed in daily diet of Indian people. But in India Sigatoka leaf spot disease also known as yellow sigatoka is one of the serious fungal disease of Banana and has become a threat to banana growers in the country particularly in Karnataka, AP, TN, Assam, etc.

 

Pathogen: Yellow sigatoka disease is caused by Pseudocercospora musicola  

 

Causes of the disease

  • High humidity, heavy dew and rainy weather with temperature above 21 ° C
  • Leaf wetness for prolonged time
  • Cooler temperatures
  • Poor drainage and low soil fertility particularly of potassium are more prone to sigatoka disease
  • Closer planting
  • Retaining many numbers of suckers without removing
  • The disease is more severe in moist conditions as surface moisture is required for spreading of disease

 

Disease Symptoms

Initial symptoms appear on the lower leaves with small reddish-brown specks develop near the tip or margin of lamina and also on the midrib of leaves. Later the specks increase in size & turn to spindle shape spots with reddish brown margin and grey center, surrounded by yellow hallow.

 

  

The spots coalesce and the leaves starts to dry. Gradually the infection spreads to the upper leaves.

 

 

 Under favourable conditions the disease spreads to entire foliage and become severe after the emergence of fruit bunch. The fruit bunches of infected plants will fail to develop normally and may also ripen prematurely. This will ultimately reduce the yield.   

    

  

 

Preventive measures:

  • Planting should be taken up in well drained soils and maintain proper drainage thereafter
  • Grow resistant varieties
  • Planting at recommended spacing
  • Remove suckers periodically to avoid overcrowding and maintain only one or two healthy suckers
  • Periodically remove and burn affected leaves to avoid further spreading
  • Provide adequate potassium fertilizers
  • Keep the fields free from weeds

 

Management: The following fungicides spray will help in managing with Banana sigatoka disease

SI. No.

Chemical Name

Trade Name

Sticking and Spreading agents (Gum)

1

Chlorothalonil

Kavach @ 1.5 to 2gm/Lit or Splash @ 1.5 to 2gm/Lit or Ishaan @ 1.5 to 2gm/Lit or Jatayu @ 1.5 to 2gm/Lit or Sarthak @ 1.5 to 2gm/Lit or Foliogold @ 1.5 to 2gm/Lit  

 

 

 

 

 

Super shot or Raccolo spraywell or sluuurp or Chipku or Sure shot or  Filwet or Unispread or Ecospread  

2

Propiconazole

Tilt @ 0.5ml/Lit or Vespa @ 0.5ml/Lit or Taspa @ 0.5ml/Lit or Dhanuka zerox @ 2 ml/Lit

3

Thiophenate methyle

Roko @ 2-2.5 gm/Lit

4

Carbendazim

Bavistin @ 2.5-3 gm/Lit or Bengard @ 2-2.5 gm/Lit or Benfil @ 2-2.5 gm/Lit

5

Carbendazim + Mancozeb

Indofil Sprint @ 1gm/Lit or Indofil Companion @ 1.5-2 gm/Lit or Saaf @ 1.5-2 gm/Lit   

6

Mancozeb

3 Star 45 @ 1.5-2 gm/Lit or Satsuma @ 1.5-2 gm/Lit or Dithane M-45 @ 1.5-2 gm/Lit

7

Copper hydroxide

Kocide @ 2-2.5 gm/Lit

8

Copper Oxychloride

Blue copper @ 2-2.5 gm/Lit or Blitox @ 2-2.5 gm/Lit or Value Gold @ 2-2.5 gm/Lit

 

  • Depending on the disease severity repeat the spray @ 15-20 days intervals with different fungicides having different chemical composition.

 Chlorothalonil containing fungicides

 

Propiconazole containing fungicides                        Thiophanate methyle

                          

 

Carbendazim containing fungicides                      Carbendazim + Mancozeb

         

             Mancozeb containing fungicides   
   
   
   Copper Hydroxide                                Copper Oxychloride
                   
 
 

Note:

  • During pre-monsoon you can go for spray with mancozeb or chlorothalonil or Carbendazim containing fungicides and during rainy days spray with Propiconazole fungicides.
  • While spraying any fungicides on Banana foliage mix it with sticking, dispersing and spreading agents (gums) for effective use efficiency and better management
  • You can also go for application of chemical fungicides and biological agents alternatively @ 15 days interval to manage with Sigatoka disease   

Organic cultivation of Banana: In case of organically grown banana plantations you can go for application of only Biological agents such as Trichoderma viride or Pseudomonas or Bacillus sps along with Neem oil (Azadirachtin) which may help in preventing and managing with Sigatoka disease in Banana.

Note: The above mentioned bioagents can be applied even as prophylactic measure in case of organic cultivation of banana. They can be either applied to soil through drenching or foliar spray can be done. Bioagents needs to be sprayed regularly at 15-20 days interval to prevent the incidence of this disease.   

 

 

Technical Name

Trade Name

1

Trichoderma

(Ecoderma @ 20g/lit or Sanjeevni @ 20g/lit or Multiplex Nisarga @ 1mL/lit or Treat Bio-Fungicide @ 20g/lit or Alderm @ 2-3mL/lit )

2

Pseudomonas

 (Bactvipe @ 1ml/Lit or Ecomonas 20g/Lit or Spot @ 1ml/Lit or Almonas @ 2-3 mL/Lit or Bio-jodi @ 20g/Lit)

3

Bacillus sps

(Mildown @ 1ml/Lit or Delfin @ 20g/Lit or Abacil @ 2-3 mL/Lit or Bio-jodi @ 20g/Lit or Milastin K @ 2mL/Lit or Aphos @ 2-3 mL/Lit or TB-2 Fertidose @ 2ml/Lit or TB-3 Fertidose @ 2ml/Lit)    

4

Neem oil (Azadirachtin)

(Econeem plus @ 1.5-2 mL/Lit or Econeem @ 1.5-2 mL/Lit or @ Ecotin @ 0.5 mL/Lit Wektocon @ 1-2 mL/Lit or Alnym liquid @ 2mL/Lit or  Neemark @ 1.5- 2mL/Lit or Nimbecidine 2mL/Lit or Altacide @ 2mL/Lit or Alcare @ 2-3 mL/Lit or 

      
 
For more information on products to manage with yellow sigatoka disease in Banana click the link below 

 

**********

Dr. Asha K M

BigHaat

For more information kindly call on 8050797979 or give missed call on 180030002434 during office hours 10 AM to 5 PM  

 _______________________________________________________________________

Disclaimer: The performance of the product (s) is subject to usage as per manufacturer guidelines. Read enclosed leaflet of the product(s) carefully before use. The use of this product(s)/ information is at the discretion of user. 


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