Active chemical class and lipid biosynthesis inhibition
Oberon contains Spiromesifen 22.9% SC (suspension concentrate), a modern compound belonging to the tetronic acid / keto-enol chemical group.
It functions by inhibiting lipid biosynthesis (LBI) in target pests, preventing them from synthesizing essential lipids and fatty acids. This disrupts nymphal development, prevents juvenile moulting, and severely reduces adult female egg fecundity.
- Active chemical: Spiromesifen 22.9% SC.
- IRAC classification: Group 23 (Inhibitor of acetyl-CoA carboxylase).
- Juvenile potency: Highly toxic to juvenile nymphal stages and mite eggs, breaking the reproductive lifecycle of persistent infestations.
Target crops and approved pest spectrum
Bayer Oberon is registered across cotton, chilli, brinjal, tomato, and tea crops in India.
It delivers outstanding efficacy against damaging mite species that cause severe leaf curling, stunting, and downward cupping.
- Chilli: Yellow mite (Polyphagotarsonemus latus) causing downward leaf curling and inverted boat symptoms.
- Cotton: Whiteflies (Bemisia tabaci) and red spider mites (Tetranychus species).
- Brinjal & Tomato: Red spider mites and whitefly nymphal stages.
- Tea: Red spider mite management in plucking fields.
Application timing, foliar coverage, and safety
Apply Oberon upon observing early nymphal mite activity or whitefly nymphs on the undersides of leaves.
Because mites inhabit lower leaf surfaces, complete coverage using fine hollow cone nozzles operated at label-prescribed dilutions is essential.
- Foliar wetting: Direct spray thoroughly at the undersides of leaves where mites and whitefly nymphs shelter.
- Translaminar penetration: Penetrates foliar tissues to reach pests sheltered on opposite leaf surfaces.
- Protective measures: Wear protective gloves, eye goggles, and face shield; respect prescribed pre-harvest intervals.
Official source
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Central Insecticides Board & Registration Committee ↗Related on KisanPe
Common questions
What is the active ingredient in Bayer Oberon?
Bayer Oberon contains Spiromesifen 22.9% SC, a specialized acaricide and insecticide.
Which pests does Oberon control most effectively?
It specifically controls red spider mites, yellow mites, and nymphal stages of whiteflies.
How does Oberon control mites on crops?
It inhibits lipid biosynthesis, preventing nymphal development and halting female egg production.
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
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