Proposed Ban on Carbosulfan Insecticide
Science and Technology · Wednesday, 26 August 2026
The Agriculture Ministry has proposed a complete ban on Carbosulfan, a broad-spectrum carbamate insecticide, citing severe risks to human health, wildlife, and aquatic ecosystems. The chemical rapidly metabolises into carbofuran—an acutely hazardous substance already banned in many countries—based on expert recommendations under the Insecticides Act, 1968.
Quick highlights
- Carbosulfan is a broad-spectrum, systemic carbamate insecticide, acaricide, and nematicide that inhibits acetylcholinesterase (AChE).
- It is a pro-pesticide derivative of carbofuran, rapidly hydrolysing into the already-banned carbofuran upon application.
- Extensively used in paddy, cotton, horticultural, and cash crops for controlling stem borers, aphids, jassids, and whiteflies.
- Poses acute and chronic neurotoxic hazards to farmers and consumers through inhalation, dermal exposure, and dietary residues.
- Extremely toxic to birds, honeybees, soil micro-organisms, fish, and aquatic invertebrates.
- The proposed ban is based on expert recommendations under the Insecticides Act, 1968.
Context
The Agriculture Ministry has proposed a complete ban on Carbosulfan, a widely used carbamate-group insecticide in Indian agriculture. The decision follows expert recommendations under the Insecticides Act, 1968, citing the chemical's severe risks to human health, non-target wildlife, and aquatic ecosystems, particularly its rapid metabolic conversion into the highly toxic carbofuran.
Key Facts
Carbosulfan is a systemic and contact carbamate insecticide that inhibits acetylcholinesterase (AChE), causing acetylcholine accumulation and nervous system disruption in pests. It is a pro-pesticide derivative of carbofuran—once applied, it rapidly hydrolyses into carbofuran, an acutely hazardous substance already banned or restricted globally. Formulated as Emulsifiable Concentrates (EC) and Granules (G). Used in paddy (stem borers, gall midges), cotton (aphids, jassids, whiteflies), and horticultural/cash crops (sugarcane, groundnuts).
Significance
The proposed ban addresses a critical gap in India's pesticide regulatory framework where a pro-pesticide (Carbosulfan) remains legal even though its active metabolite (carbofuran) is already banned. Agricultural runoff from paddy fields contaminates surface water bodies and leaches into groundwater aquifers. Secondary poisoning causes rapid mortality in birds, honeybees, and beneficial soil micro-organisms, undermining ecological balance and pollination services.
Challenges / Way Forward
Challenges: farmer dependence on cheap, broad-spectrum insecticides; lack of affordable alternatives for smallholders; enforcement gaps in pesticide residue monitoring. Way forward: accelerate registration of bio-pesticides and neem-based alternatives; strengthen Integrated Pest Management (IPM) extension services; enforce Maximum Residue Limits (MRLs) under FSSAI; and align India's pesticide regulations with the Rotterdam Convention's prior informed consent procedures.
Exam Angle
GS Paper III (Agriculture/S&T): pesticide regulation, Insecticides Act 1968, carbamate group, IPM. GS Paper III (Environment): pesticide pollution, aquatic ecosystem contamination, bioaccumulation. Prelims: Carbosulfan, carbofuran, AChE inhibition, Insecticides Act 1968, Rotterdam Convention. Mains: evaluate the need for phasing out hazardous pesticides in Indian agriculture.
Remember this
- Carbosulfan belongs to the carbamate group of insecticides.
- It inhibits acetylcholinesterase (AChE), causing neurotoxicity.
- Carbosulfan is a pro-pesticide that metabolises into carbofuran.
- Carbofuran is already banned or restricted in many countries worldwide.
- The proposed ban is under the Insecticides Act, 1968.
- Carbosulfan is used in paddy, cotton, sugarcane, and groundnut crops.
- It is extremely toxic to birds, honeybees, fish, and aquatic invertebrates.
- Formulated as Emulsifiable Concentrates (EC) and Granules (G).
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