Active chemical class and mitochondrial uncoupling action
Intrepid contains Chlorfenapyr 10% SC (suspension concentrate), an active compound belonging to the pyrrole chemical group (IRAC Group 13).
Chlorfenapyr operates as an uncoupler of oxidative phosphorylation in insect mitochondria. It uncouples the proton gradient across mitochondrial membranes, preventing ATP synthesis. Deprived of cellular energy, the insect ceases feeding within hours and dies from systemic energy depletion.
- Active chemical: Chlorfenapyr 10% SC.
- IRAC classification: Group 13 (Uncoupler of oxidative phosphorylation via proton gradient disruption).
- Pro-insecticide activation: Metabolized inside the insect by mixed-function oxidases into its active toxic form, overcoming traditional target-site resistance.
Target crops and approved pest spectrum
Intrepid is registered in India across commercial vegetables, field crops, and plantation agriculture.
It is celebrated for providing control over multi-resistant diamondback moth (DBM) in cabbage and severe mite infestations in chillies.
- Cabbage & Cauliflower: Diamondback moth (Plutella xylostella) and cabbage loopers.
- Chilli: Yellow mites (Polyphagotarsonemus latus), thrips, and fruit borer.
- Tomato: Fruit borer (Helicoverpa armigera) and pinworm.
- Translaminar penetration: Penetrates foliar tissues rapidly, controlling larvae and mites feeding on lower leaf surfaces.
Application timing, dilution, and safety directions
Apply Intrepid upon observing early larval instars or initial mite colonies on crop foliage before severe skeletonization occurs.
Ensure thorough and uniform foliar coverage using calibrated knapsack sprayers operated at container label recommended dilution rates.
- Spraying technique: Direct spray to cover both upper and lower leaf surfaces where larvae and mites shelter.
- Resistance management: Limit consecutive applications, rotating with insecticides belonging to different IRAC groups.
- Protective measures: Wear protective overalls, chemical-resistant gloves, and face shield; respect statutory pre-harvest intervals.
Official source
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Central Insecticides Board & Registration Committee ↗Related on KisanPe
Common questions
What is the active ingredient in BASF Intrepid insecticide?
Intrepid contains Chlorfenapyr 10% SC, a specialized pyrrole insecticide and acaricide.
How does Chlorfenapyr kill resistant caterpillars and mites?
It uncouples oxidative phosphorylation in mitochondria, shutting down ATP cellular energy production and causing rapid mortality.
Which crops and pests are officially approved for Intrepid spraying?
It is approved for cabbage, cauliflower, chilli, and tomato to control diamondback moths, fruit borers, and mites.
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
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