Active ingredient chemistry and photochemical activation
- Active ingredient: Diafenthiuron 50% WP (wettable powder) belonging to the thiourea class (IRAC Group 12A).
- Photochemical conversion: In the presence of sunlight on the leaf surface, Diafenthiuron converts into its carbodiimide derivative, a potent inhibitor of mitochondrial ATP synthase.
- Triple-action effect: Operates via contact, ingestion, and translaminar vapour action, reaching pests concealed on the undersides of dense foliage.
- Immediate feeding cessation: Pests stop feeding within hours of application, preventing virus transmission and crop damage.
Target pests and registered crop spectrum
- Cotton: Whiteflies (Bemisia tabaci), aphids, and jassids.
- Chilli: Yellow mites (Polyphagotarsonemus latus) and thrips causing upward and downward leaf curling.
- Cabbage and cauliflower: Diamondback moth (Plutella xylostella) larvae resistant to standard pyrethroids.
- Brinjal and tomato: Whiteflies, red spider mites, and jassids.
Spray timing, water volume and pollinator precautions
Apply at early pest buildup using adequate water volume to ensure uniform foliar misting. Sunlight is required for photochemical activation of the compound on the foliage. Adhere strictly to the pre-harvest interval (PHI) on the product container, avoid spraying during peak honeybee foraging hours, and wear protective masks and gloves during preparation and application.
Official source
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Central Insecticides Board & Registration Committee (CIB&RC) ↗Related on KisanPe
Common questions
What is the active ingredient in Pegasus insecticide?
Pegasus contains Diafenthiuron at 50% WP (wettable powder).
How does Diafenthiuron work against sucking pests and mites?
In sunlight, Diafenthiuron converts into an active compound that inhibits mitochondrial ATP synthase, depriving pests of cellular energy and causing rapid paralysis.
Which major pests are controlled by Pegasus in chilli and cotton?
It effectively controls yellow mites, thrips, and whiteflies in chilli and cotton, including populations resistant to conventional insecticides.
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
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