Active Chemistry and Target Pests
Regent contains Fipronil (available in 5% SC for foliar or soil application and 0.3% GR for soil broadcast). It acts as an antagonist on insect gamma-aminobutyric acid (GABA)-gated chloride channels, disrupting normal neural transmission.
Its unique mode of action makes it effective against insect biotypes that show tolerance to older organophosphate or synthetic pyrethroid chemistries.
- Target pests in paddy: Yellow stem borer (Scirpophaga incertulas), leaf folder (Cnaphalocrocis medinalis), and gall midge.
- Target pests in sugarcane: Early shoot borer (Chilo infuscatellus) and root grubs.
- Mode of action: Contact and systemic uptake through plant roots and foliage with long-lasting residual control.
Recommended Application and Safety Norms
Application timing must align with pest economic threshold levels (ETL). Soil granules require adequate moisture in the root zone during broadcast, whereas foliar spray should be conducted during morning or late afternoon hours.
Operators must follow approved pesticide stewardship guidelines to avoid drift and safeguard local biodiversity.
- Use appropriate personal protective equipment (PPE) including gloves, mask, and apron while measuring and dispensing.
- Strictly respect label dilution rates and manufacturer withholding periods before crop harvest.
- Avoid spraying near open water channels, ponds, or beehives to protect non-target organisms.
Official source
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Central Insecticides Board & Registration Committee ↗Related on KisanPe
Common questions
What is the active ingredient in Regent insecticide?
Regent contains Fipronil, a phenylpyrazole group compound available commercially as 5% SC (suspension concentrate) or 0.3% GR (granules).
Which crops are labeled for Regent application?
In India, it is labeled primarily for rice (paddy) against stem borer and leaf folder, and for sugarcane against shoot borer and soil pests.
Can Regent granules be mixed with standard chemical fertilizers?
Growers frequently mix Regent 0.3% GR with dry urea or basal fertilizer for uniform field broadcast, but the mix should be applied immediately without prolonged storage.
What precautions should be taken regarding honeybees?
Fipronil is highly toxic to pollinators; avoid foliar application during active flowering periods when honeybees are foraging in the field.
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
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