Chemical composition and dual mode of action
- Active ingredients: Chlorpyrifos 50% (organophosphate) + Cypermethrin 5% EC (synthetic pyrethroid).
- Dual action mechanism: Chlorpyrifos inhibits acetylcholinesterase (AChE), while Cypermethrin disrupts sodium channel nerve transmission.
- Knockdown and fumigant effect: Delivers immediate knock-down of active insects with strong vapor and residual activity.
- Resistance management: Dual active chemistry helps overcome single-molecule insecticide resistance in heavy pest infestations.
Target insect pests and approved crop uses
- Cotton: Highly effective against spotted bollworm, American bollworm, pink bollworm, and whitefly infestations.
- Paddy (Rice): Controls stem borer, leaf folder, whorl maggot, and armyworm.
- Vegetables: Controls fruit and shoot borers, cutworms, and caterpillars in brinjal, okra, and tomato.
- Oilseeds: Controls semi-loopers and spodoptera caterpillars in soybean and groundnut.
- Soil insects: Provides incidental control of soil cutworms and subterranean grubs when washed into root zones.
Spraying guidelines and safety precautions
- Application equipment: Apply using high-volume knapsack sprayers fitted with hollow cone nozzles for thorough canopy coverage.
- Timing: Spray at economic threshold levels (ETL) during early morning or evening hours.
- Protective equipment: Operators must wear protective masks, rubber gloves, and eye shields to prevent dermal or respiratory absorption.
- Pre-harvest interval: Strictly adhere to the recommended pre-harvest waiting period before picking fruits or harvesting crops.
Official source
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Central Insecticides Board & Registration Committee (CIBRC) ↗Related on KisanPe
Common questions
What is the technical content of 505 insecticide?
It contains Chlorpyrifos 50% + Cypermethrin 5% EC, combining an organophosphate and a synthetic pyrethroid.
Which insect pests are controlled by 505 insecticide?
It controls bollworms, stem borers, leaf folders, fruit borers, cutworms, and caterpillars across cotton, paddy, and vegetables.
How does 505 insecticide act on insect pests?
It operates through contact, stomach ingestion, and vapor action, paralyzing the insect nervous system rapidly.
Is 505 insecticide safe for beneficial honeybees?
No, it is toxic to honeybees and aquatic organisms; avoid spraying during active foraging hours and near water bodies.
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
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