Active Ingredient and Auxin Physiological Action
Planofix contains Alpha Naphthyl Acetic Acid (4.5% SL), a synthetic auxin growth regulator.
It works by maintaining optimal auxin levels across flower and fruit pedicels, inhibiting the formation of the abscission layer.
Preventing premature abscission keeps flowers and young developing fruits firmly attached to the mother plant through final maturation.
- Formulation: 4.5 percent Soluble Liquid (SL)
- Abscission inhibition: Prevents enzymatic dissolution of the pedicel abscission zone
- Fruit enlargement: Stimulates cell elongation and vascular nutrient flow to developing fruits
Target Crops and Critical Application Windows
Planofix is registered across cotton, vegetables, pulses, and commercial fruit orchards.
Sprays must be precisely timed ahead of anticipated physiological flower or fruit drop cycles.
In cotton, it suppresses square and boll drop; in chilies and tomatoes, it maintains continuous fruit set.
- Cotton: Applied during squaring and early boll formation to curtail shedding
- Chilies and tomato: Sprayed at early flowering to stimulate blossom retention and uniform fruit sizing
- Mango and citrus: Applied after fruit set to prevent post-bloom fruitlet drop
Dosage Precision, Dilution Discipline, and Safety
Auxin growth regulators function at extremely minute concentrations; overdosing reverses beneficial effects, causing flower thinning and leaf scorching.
Applicators must follow exact label dilutions printed on the CIBRC product leaflet, typically requiring only a few milliliters per spray tank.
Wear standard personal protective equipment during preparation.
- Micro-dosage precision: Follow label dilution ratios exactly; never overdose growth regulator sprays
- Spray timing: Apply during cool morning or evening hours with fine cone nozzles for uniform foliar misting
- Personal protection: Wear protective rubber gloves, mask, and safety goggles during handling
Official source
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Central Insecticides Board & Registration Committee ↗Related on KisanPe
Common questions
What is the active chemical in Bayer Planofix?
Planofix contains Alpha Naphthyl Acetic Acid (NAA) 4.5% SL, a synthetic plant auxin growth regulator.
How does Planofix prevent flower and fruit drop?
It inhibits the formation of the abscission layer in flower and fruit stems, keeping them securely attached to the plant.
What happens if Planofix is over-dosed in spray water?
Overdosing auxin regulators acts as a chemical thinner, causing severe blossom shedding, leaf curling, and foliar injury.
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
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