Chemical properties and neurotoxic mode of action
Lambda-cyhalothrin is a modern Type II synthetic pyrethroid containing an alpha-cyano group that delivers high insecticidal potency at low active ingredient rates.
It works by keeping voltage-gated sodium channels open in insect nerve membranes. This causes prolonged depolarization, repetitive nerve firing, loss of motor control, and rapid death by paralysis.
- Active chemical: Lambda-cyhalothrin (formulated as 5% EC and 4.9% CS).
- Chemical classification: Synthetic pyrethroid (Sodium channel modulator).
- Advanced CS technology: Capsule suspension micro-encapsulation provides extended residual efficacy and reduced operator skin irritation.
Target crops and approved pest spectrum
Lambda-cyhalothrin is registered across major field crops, commercial fiber crops, oilseeds, and vegetables in India.
It provides reliable control of both chewing caterpillars and challenging sucking pests, delivering immediate cessation of insect feeding.
- Cotton: Bollworms (Helicoverpa armigera, spotted bollworm), jassids, and thrips.
- Paddy (Rice): Stem borer, leaf folder, and green leafhopper.
- Chilli and Tomato: Fruit borer and thrips.
- Pigeon Pea: Pod borer and pod fly.
- Mango: Mango hoppers infesting flower panicles.
Application guidelines, dilution, and environmental precautions
Foliar application should be timed when insect pests first cross economic threshold levels to prevent irreversible crop damage.
Thorough canopy coverage using hollow cone nozzles ensures maximum deposition on both upper and lower leaf surfaces.
- Dosage compliance: Mix at recommended container label dilution rates in clean water per hectare.
- Protective measures: Wear protective clothing, face shield, and chemical-resistant gloves to prevent dermal tingling.
- Pollinator caution: Toxic to honeybees and aquatic fauna; avoid spraying during active foraging hours and near ponds or streams.
Official source
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Central Insecticides Board & Registration Committee ↗Related on KisanPe
Common questions
What type of insecticide is Lambda-cyhalothrin?
It is a broad-spectrum Type II synthetic pyrethroid that acts as a sodium channel modulator in insect nerves.
What are the advantages of capsule suspension (CS) formulations of Lambda-cyhalothrin?
CS micro-capsules release the active ingredient gradually, offering longer residual protection, improved rainfastness, and reduced skin irritation.
Which crops are approved for Lambda-cyhalothrin spraying?
It is approved for cotton, rice, chilli, tomato, pigeon pea, groundnut, and mango.
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
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