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KATYAYANI ETHER 39 (Ethephon 39% SL)


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It is a versatile plant growth regulator which improves coloration and accelerates uniform ripening of fruits like pineapple, mango, tomato, etc. It can be deployed in specific uses like defoliation in pomegranate and breaking alternate bearing in mango.


  • Benefits: Improve coloration and accelerate uniform ripening of fruits like pineapple, mango tomato. Helps in breaking alternate bearing of mango and induces profuse flowering.
  • Major Crops: Mango, Pineapple, Coffee, Tomato, Rubber, Pomegranate


Chemical Group –  Plant Growth Regulator


Mode of Action –  Ether 39 is plant growth regulator with systemic properties. It penetrates into the plant tissues, and is translocated and progressively decomposed to ethylene, which positively affects the growth process.


Advantages –                                                                                                         

  • Improve coloration and accelerates uniform ripening of fruits like pineapple, mango tomato.
  • Helps in breaking alternate bearing of mango and induces profuse flowering.


Crop Purpose
Mango For flower induction in juvenile mango
Mango Post-harvest treatment
Pineapple For flower induction
Coffee(Arabica) Uniform ripening of berries
Coffee(Robusta) Uniform ripening of berries
Tomato Post-harvest treatment
Rubber Yielding rubber latex
Pome-granate Defoliation for better flowering & fruit yield


Dose –  1.0 – 1.50 Ml / Liter of water


Chemical Composition: Giberellic Acid 0.001% L. Dosage: 25-30 ml/Pump(15lit) or 250 ml/Acre. Method of Application: Spray. Spectrum: Can be used for crop and fruit growth after flowering.


  • Mango (for breaking alternate bearing tendencies): First spray in mid-October or early November total 5 spray at fortnightly interval
  • Mango (for flower induction): Commencing from early November total 5 sprays at weekly interval
  • Mango (post-harvest treatment): Dip mature fruits in the solution for uniform ripening. One treatment is required
  • Pineapple (for flower induction): 30-37 leaf stage or 10-12 months. One spray is required
  • Coffee (Arabica& Robusta): For uniform ripening of berries, one spray at fly picking stage when 10-15% of berries have ripened
  • Tomato (post-harvest treatment): Post-harvest treatment can be done bydipping once
  • Rubber: March, August, September, November (four applications) brushing once in two months on the tapping cut of the bark

Composition / Information on Ingredients 

Composition                         Content % 

Ethephon                                39% 

Inert ingredients                    61%

Additional information


250ml ( 250ml x 1), 750ml ( 250ml x 3), 1Litre ( 1L x 1), 3Litre ( 1L x 3 ), 5Litre (1L x 5), 10Litre ( 1L x 10)


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