Major insecticide classes and mode of action
- Diamides (e.g. Chlorantraniliprole): Target insect ryanodine receptors, causing rapid muscle paralysis; highly effective against caterpillars and stem borers with safety for beneficial insects.
- Neonicotinoids (e.g. Imidacloprid, Thiamethoxam, Dinotefuran): Systemic neurotoxins that bind to nicotinic acetylcholine receptors, controlling sap-sucking pests like aphids, jassids, and plant hoppers.
- Synthetic pyrethroids: Fast knockdown nerve agents that disrupt sodium channels, used for bollworms and foliar chewing pests.
- Bio-insecticides: Microbial agents such as Bacillus thuringiensis (Bt) and botanical extracts like neem-based azadirachtin.
Safe handling and CIBRC label compliance
All agricultural insecticides in India are regulated under the Insecticides Act, 1968, by the Central Insecticide Board and Registration Committee (CIBRC). Farmers must strictly adhere to the approved label for specific crops, target pests, dilution rates, and mandatory Pre-Harvest Intervals (PHI).
Resistance management and pollinator protection
- Rotate insecticide groups with differing IRAC modes of action across crop generations to prevent insect resistance.
- Never spray flowering crops during peak daytime hours when bees and beneficial pollinators are actively foraging.
- Always wear protective clothing, masks, and eye goggles, and avoid spraying against wind direction.
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 (CIBRC) ↗Related on KisanPe
Common questions
What is the difference between contact and systemic insecticides?
Contact insecticides kill pests when directly sprayed on them or when pests walk on treated surfaces, whereas systemic insecticides are absorbed into plant sap and kill pests when they feed.
What does Pre-Harvest Interval (PHI) mean on an insecticide bottle?
PHI is the minimum required waiting time in days between the last chemical spray and harvest to ensure chemical residues break down below safe legal limits.
Where can farmers verify approved insecticides for their crop?
On the official portal of the Directorate of Plant Protection, Quarantine & Storage (ppqs.gov.in).
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
More Crop Protection & Pesticides guides
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