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Crop Protection & Pesticides

Action 505 Insecticide: Chlorpyrifos and Cypermethrin Guide

Action 505 is a combination insecticide containing chlorpyrifos 50% and cypermethrin 5% EC. Engineered for rapid knockdown and residual control, it combines organophosphate and synthetic pyrethroid modes of action to manage complex caterpillar, borer, and sucking pest attacks.

Last reviewed: 11 November 2026

Chemical Composition and Dual Action

Action 505 combines chlorpyrifos (an acetylcholinesterase inhibitor) with cypermethrin (a nerve axon sodium channel modulator).

This synergy delivers strong contact, stomach, and localized vapor action, eliminating pests hidden within rolled leaves or dense foliage.

  • Chlorpyrifos 50%: Organophosphate delivering deep vapor action and lingering contact protection
  • Cypermethrin 5%: Pyrethroid providing instantaneous knockdown upon insect contact
  • Broad Spectrum: Controls both chewing caterpillars and foliar sucking insect pests

Target Crops and Insect Pests

Action 505 is widely sprayed in cotton, rice, pulses, and vegetables facing heavy mixed pest infestations.

In cotton, it suppresses the bollworm complex while controlling foliar aphids and jassids.

  • Cotton: Spotted bollworm, American bollworm, pink bollworm, and whiteflies
  • Paddy: Yellow stem borer, leaf folder, and gall midge larvae
  • Brinjal and Tomato: Fruit and shoot borer (Leucinodes orbonalis) and leaf eating caterpillars
  • Sugarcane: Early shoot borer and top shoot borer infestations

Application Guidelines and Safety Measures

Apply Action 505 at the economic threshold level using properly calibrated sprayers with hollow cone nozzles.

Because of its toxicity to honeybees and fish, avoid spraying during full bloom and prevent chemical drift into open waterways.

  • Spray Volume: Apply with 150 to 200 liters of water per acre for thorough canopy penetration
  • Protective Equipment: Operators must wear chemical-resistant gloves, goggles, and respiratory masks
  • Withholding Period: Respect labeled pre-harvest intervals to ensure harvested produce meets safety standards

Official source

Check the latest rules, benefits and forms here. KisanPe is an independent platform and is not a government website.

Central Insecticides Board & Registration Committee ↗

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Common questions

What active ingredients are in Action 505 insecticide?

Action 505 contains chlorpyrifos 50% plus cypermethrin 5% EC in an emulsifiable concentrate formulation.

How does Action 505 penetrate dense foliage?

The chlorpyrifos component creates a mild localized vapor action that reaches caterpillars and pests sheltered within curled leaves.

Is Action 505 safe for beneficial insects like bees?

No, both active ingredients are toxic to pollinators; avoid spraying during active daytime honeybee foraging.

General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.

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