Active Ingredient Chemistry and Physiological Action
Planofix operates on plant hormonal balances to regulate natural reproductive retention.
Key biochemical attributes:
- Active ingredient: Alpha Naphthyl Acetic Acid (NAA) formulated at 4.5% SL (soluble liquid) concentration.
- Synthetic auxin analog: Mimics natural indole-3-acetic acid (IAA) hormones in plant tissues.
- Abscission inhibition: Delays the enzymatic breakdown of the abscission zone, preventing premature dropping of flowers, squares, and young fruits.
- Cell elongation: Promotes cell expansion in developing ovaries, contributing to uniform fruit enlargement and shape.
Target Crops and Application Timing
Applying Planofix during critical reproductive transitions redirects plant assimilates into harvestable yield.
Registered crop applications:
- Cotton: Applied during square initiation and peak flowering to prevent square and boll shedding, improving boll retention.
- Chilli and Tomato: Sprayed at the onset of flowering to reduce blossom drop caused by temperature fluctuations or high humidity.
- Mango and Citrus: Applied after fruit set (pea or marble stage) to prevent catastrophic summer fruit drop.
- Grapes and Pineapples: Used to synchronize flowering, prevent berry shatter, and enhance cluster uniformity.
Dosage Precision and Application Rules
Because plant hormones are physiologically active in parts-per-million (PPM) concentrations, exact measurement is critical.
Safe application guidelines:
- Ultra-low dosage: Measure strictly according to package label instructions (typically small milliliter volumes per 10 to 15 liters of water); overdosing can cause leaf curling or chemical fruit thinning.
- Adequate soil moisture: Apply only when fields have sufficient soil moisture; avoid spraying crops under acute drought stress.
- Timing of spray: Spray during cool morning or late afternoon hours to maximize chemical absorption before foliar droplets evaporate.
- Protective equipment: Wear chemical-resistant gloves, safety goggles, and protective clothing during spray tank preparation.
Official source
Check the latest rules, benefits and forms here. KisanPe is an independent platform and is not a government website.
Directorate of Plant Protection, Quarantine & Storage ↗Related on KisanPe
Common questions
What is the active chemical ingredient in Planofix?
Planofix contains Alpha Naphthyl Acetic Acid (NAA) 4.5% SL, a synthetic auxin plant growth regulator.
Is Planofix a chemical fertilizer?
No, Planofix is not a fertilizer; it is a plant growth regulator that prevents flower and fruit drop through hormonal regulation.
What happens if Planofix is overdosed on crops?
Overdosing can reverse its positive effects, causing leaf epinasty (curling), vegetative stunting, or unintended fruit thinning.
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
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