Chemical profile and neurotoxic mode of action
- Active ingredient: Deltamethrin 2.8% EC (Type II synthetic pyrethroid, IRAC Group 3A).
- Mode of action: Modulates voltage-gated sodium channels in insect nerve cell membranes, causing continuous nerve firings, paralysis, and death.
- Knockdown speed: Provides rapid knockdown within minutes of insect contact or ingestion.
- Repellent effect: Exhibits strong repellent and anti-oviposition properties that discourage adult moths from laying eggs on foliage.
Target insect pests and registered crop portfolio
- Cotton: Controls spotted bollworm, spiny bollworm, American bollworm, and pink bollworm.
- Paddy (Rice): Controls leaf folder, whorl maggot, and stem borer larvae.
- Pulses (Chickpea, Pigeon pea): Manages pod borers (Helicoverpa armigera) and leaf-feeding caterpillars.
- Vegetables: Controls diamondback moth (DBM), fruit and shoot borer in tomato and brinjal.
- Tea: Highly effective against tea mosquito bug, looper caterpillars, and flush worms.
Spraying method, equipment, and environmental precautions
- Application technique: Apply using 150 to 200 litres of water per acre with a knapsack or tractor-mounted sprayer fitted with hollow cone nozzles.
- Spray timing: Spray at the early economic threshold level when caterpillars are small and actively feeding.
- Pollinator and aquatic toxicity: Highly toxic to fish and honeybees; avoid spraying near aquaculture ponds or blooming orchards.
- Personal protection: Wear gloves, protective clothing, and a respirator during preparation to prevent cutaneous irritation.
Official source
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Central Insecticides Board & Registration Committee (CIBRC) ↗Related on KisanPe
Common questions
What is the technical ingredient in Bayer Decis?
Decis contains Deltamethrin 2.8% EC, a Type II synthetic pyrethroid insecticide.
Which insect pests are controlled by Decis?
It controls bollworms, stem borers, leaf folders, pod borers, loopers, and caterpillars across cotton, pulses, and vegetables.
How does Deltamethrin kill insect pests?
It disrupts sodium channels in insect nerves, resulting in rapid paralysis and death.
Can Decis be sprayed near fish ponds?
No, Deltamethrin is toxic to fish and aquatic life; strictly avoid drift into water bodies.
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
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