Active chemical composition and dual neurotoxic action
Lesenta pairs a phenylpyrazole with a neonicotinoid in a concentrated 80% water-dispersible granule formulation.
Fipronil blocks GABA-gated chloride channels in the insect nervous system, while Imidacloprid acts as an agonist on nicotinic acetylcholine receptors. This dual-pathway disruption causes severe neurotoxic overstimulation, twitching, paralysis, and pest death.
- Fipronil (40% WG): Phenylpyrazole providing contact, ingestion, and soil residual action with root-growth stimulation.
- Imidacloprid (40% WG): Systemic neonicotinoid rapidly absorbed by roots and translocated acropetally through plant xylem.
- Water-dispersible granules: High-concentration WG dissolves instantly in water without dusting or tank clogging.
Target crops and approved pest spectrum
Bayer Lesenta is registered in India for managing devastating soil-dwelling root grubs and early-season insect pests.
It is a benchmark commercial solution for white grub management in sugarcane fields and groundnut cultivation.
- Sugarcane: White grubs (Holotrichia species) and termites attacking sett buds and root systems.
- Groundnut: White grubs destroying developing underground peg attachments and taproots.
- Early shoot protection: Translocating Imidacloprid protects emerging sugarcane shoots and groundnut leaves from sucking aphids and jassids.
Application methodology, soil drenching, and safety
For white grub control, apply Lesenta as a targeted soil drench along the plant root zone or furrow before beetles begin heavy egg-laying.
Adequate soil moisture is critical; apply onto moist soil or follow immediately with a light irrigation to move active ingredients into the root zone.
- Soil drenching in sugarcane: Drench along the cane sett furrow or along ratoon rows using a knapsack sprayer with nozzle cap removed.
- Timing for white grubs: Apply during early monsoon rains when young first-instar grubs begin feeding near topsoil roots.
- Protective measures: Wear protective overalls, rubber gloves, and face shield during preparation and application; respect pre-harvest intervals.
Official source
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Central Insecticides Board & Registration Committee ↗Related on KisanPe
Common questions
What active ingredients are present in Bayer Lesenta?
Lesenta contains Fipronil 40% and Imidacloprid 40% in a water-dispersible granule (WG) formulation.
How is Lesenta applied for white grub control in sugarcane?
It is applied as a directed soil drench along the crop root furrow under moist soil conditions, followed by light irrigation.
Does Lesenta protect against sucking pests as well?
Yes, the systemic Imidacloprid component moves upward into foliage, protecting emerging shoots from aphids, jassids, and thrips.
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
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