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Crop Protection & Pesticides

Fipronil 40% + Imidacloprid 40% WG Insecticide Guide

Fipronil 40 percent plus Imidacloprid 40 percent WG is a high-potency dual-action systemic insecticide used to control subterranean termites, white grubs, and foliar sucking pests. It delivers comprehensive protection in sugarcane, groundnut, and field crops through synergistic neurotoxic modes of action.

Last reviewed: 11 November 2026

Key facts

From KisanPe's verified data. Confirm prices and doses with the seller, label or official source before acting.

Category
Insecticide
Mode of action
Systemic
Target crops
Cotton, Paddy, Chilly, Sugarcane
Target pests
Aphids, Jassids, Whitefly, Thrips

Dual Chemical Chemistry and Synergistic Nerve Action

This combination blends Fipronil (40%) and Imidacloprid (40%) formulated as water-dispersible granules.

Fipronil acts as a GABA-gated chloride channel antagonist, while Imidacloprid acts as an agonist at nicotinic acetylcholine receptors.

By targeting two distinct receptors in the insect nervous system, it produces irreversible excitation, feeding disruption, and fast mortality even against tolerant pest strains.

  • Fipronil (40% WG): Phenylpyrazole providing contact, ingestion, and soil residual activity
  • Imidacloprid (40% WG): Neonicotinoid providing rapid upward systemic xylem translocation
  • Granular WG formulation: Easily disperses in water for drenching, spraying, or furrow application

Target Pests and Approved Crop Applications

The formulation is approved for controlling damaging subterranean soil pests as well as above-ground foliage-feeding insects.

It is especially valued in sugarcane and groundnut for controlling white grubs and termites that attack roots and sets.

  • Sugarcane: Controls subterranean termites, early shoot borer, and white grubs during planting
  • Groundnut: Prevents devastating white grub (Holotrichia consanguinea) root damage
  • Cotton and vegetables: Suppresses sucking pest complexes including aphids, jassids, and whiteflies

Application Methods: Furrow Drenching and Foliar Spray

For soil pests like white grubs and termites, apply as a targeted furrow drench over planted cane sets or seed furrows before covering with soil.

Ensure adequate soil moisture at the time of application to facilitate root absorption and soil zone distribution.

Always wear chemical-resistant personal protective gear during handling.

  • Furrow drenching: Direct coarse spray or drench directly along the open planting furrow
  • Soil moisture: Apply when soil contains sufficient moisture or irrigate immediately post-application
  • Operator protection: Wear chemical-resistant gloves, respirator mask, and protective goggles

Official source

Check the latest rules, benefits and forms here. KisanPe is an independent platform and is not a government website.

Central Insecticides Board & Registration Committee ↗

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Common questions

What pests are controlled by Fipronil 40% + Imidacloprid 40% WG?

It controls subterranean termites, root-feeding white grubs, and foliar sucking pests like aphids, jassids, and thrips.

How is this combination applied in sugarcane against termites?

It is applied as a furrow drench over cane setts in the open furrow prior to covering with soil.

Does the mixture have both systemic and contact action?

Yes, Imidacloprid provides systemic root and foliar absorption, while Fipronil provides strong contact and soil-residual pest knockdown.

General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.

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