Subject: GS 03: Environment
Context: Recently, the Agriculture Ministry has proposed a complete ban on Carbosulfan, a widely used pesticide, citing concerns over its toxicity to humans, non-target organisms and the environment.
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About Carbosulfan
- Carbosulfan is a broad-spectrum carbamate pesticide with insecticidal, acaricidal and nematicidal properties.
- Major Uses: It is used for pest control in paddy, cotton and horticultural crops.
Mode of Action: It inhibits acetylcholinesterase (AChE), causing acetylcholine accumulation and disrupting normal nerve functioning.
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- AChE is an enzyme that breaks down acetylcholine, thereby terminating nerve signals and ensuring normal nerve and muscle function.
- Systemic & Contact Action: It has both systemic and contact activity, allowing it to act against different types of crop pests.
- Transformation Product: Carbosulfan can break down into carbofuran, a highly toxic compound and a major concern associated with its use.
Why is Carbosulfan Proposed to be Banned?
- Human Health: Potential neurotoxic effects, especially for pesticide handlers.
- Toxic Metabolite: Breaks down into carbofuran, a highly toxic compound.
- Non-target Species: Risks to birds, pollinators and beneficial organisms.
- Aquatic Risks: Toxic to fish and aquatic organisms through runoff.
- Environmental Impact: Potential soil and water contamination.
Regulatory Background
- Legal Framework: The Insecticides Act, 1968 provides the principal framework for the registration and regulation of insecticides in India.
- Expert Review: Expert committee constituted in January 2026 to assess its continued use.
- Committee Report: Report submitted in June 2026.
- Registration Committee: Under Section 5 of the Insecticides Act, it recommended a ban.
- Proposed Ban: Covers import, manufacture, sale, transport, distribution and use.
- Status: Draft proposal; ban will apply after the final order is notified.
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