Chemical Profile and Neurotoxic Mode of Action
Chlorpyriphos combines multiple exposure pathways to eliminate stubborn insect populations.
Key biochemical attributes:
- Active ingredient: Chlorpyriphos formulated as an emulsifiable concentrate at 50% EC concentration.
- Acetylcholinesterase (AChE) inhibitor: Phosphorylates AChE enzymes in nerve synapses, causing acetylcholine buildup, neuromuscular exhaustion, and death.
- Contact and vapor action: Acts through direct body contact, ingestion, and localized vapor fumigation within soil pores.
- Residual soil binding: Binds moderately to soil organic particles, creating a protective barrier against subterranean pest migration.
Registered Agricultural and Pest Management Uses
Chlorpyriphos 50% EC is widely utilized in soil drenching and specialized crop protection schedules.
Primary target pests and crops:
- Subterranean termites: Applied as a soil drench around building foundations, timber structures, and commercial plantation root zones.
- Sugarcane: Applied in furrows over setts at planting time to control termites and early shoot borers.
- Cereals and pulses: Manages soil cutworms, wireworms, and root grubs that sever young seedling taproots.
- Cotton and oilseeds: Registered for controlling foliar chewing caterpillars and bollworms when applied per label.
Safe Handling, Soil Drenching and Precautions
Because organophosphates exhibit high mammalian toxicity, strict safety protocols are essential.
Safety and application rules:
- Strict label dilution: Measure accurately per official package instructions; never exceed recommended concentrations.
- Avoid water contamination: Do not spray near fish ponds, canals, or open wells, as chlorpyriphos is highly toxic to aquatic organisms.
- Personal protective equipment: Wear chemical-resistant rubber boots, nitrile gloves, safety goggles, and a vapor respirator.
- Safe storage: Store in original labeled containers in locked sheds away from food, animal feed, and children.
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 primary agricultural use of Chlorpyriphos 50% EC?
It is widely used for soil treatment and drenching to control subterranean termites, root grubs, and cutworms in sugarcane and plantations.
How does chlorpyriphos eliminate insect pests?
It inhibits the acetylcholinesterase enzyme in insect nerves, disrupting synaptic transmission and causing neuromuscular paralysis.
Why is protective gear essential when applying Chlorpyriphos 50% EC?
Organophosphates can be absorbed through skin and respiratory inhalation; protective gloves, goggles, and respirators prevent toxic exposure.
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
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