Dual Active Chemistry and Complementary Mode of Action
Plethora insecticide combines two distinct modes of action to overcome difficult caterpillar infestations.
Key biochemical attributes:
- Novaluron (5.25%): An insect growth regulator (IGR) of the benzoylurea class that halts chitin synthesis, preventing caterpillar larvae from molting successfully.
- Indoxacarb (4.5%): An oxadiazine neurotoxic compound that blocks voltage-gated sodium channels in nerve cells, causing rapid feeding cessation, paralysis, and mortality.
- Broad life-cycle coverage: Delivers ovicidal activity against fresh egg masses, larvicidal mortality on newly hatched instars, and rapid suppression of older feeding caterpillars.
- Advanced SC formulation: Formulated as a suspension concentrate with rainfast wetting properties that adhere securely to crop foliage.
Target Caterpillar Pests and Crop Spectrum
Engineered for high efficacy, Plethora protects vegetative and reproductive structures across major commercial crops.
Primary target pests controlled:
- Spodoptera complex: Highly effective against Spodoptera litura (tobacco caterpillar) and Fall Armyworm (Spodoptera frugiperda) in maize, soybean, and vegetables.
- Helicoverpa armigera: Controls American bollworm and gram pod borer in cotton, pigeon pea, chickpea, and tomato, preventing fruit boring and square shedding.
- Diamondback Moth (DBM): Controls Plutella xylostella in cabbage and cauliflower fields where synthetic pyrethroid resistance exists.
- Chilli fruit borers: Protects green and ripening chilli pods from caterpillar boreholes and secondary fungal rot infections.
Application Best Practices and Resistance Management
Proper application timing and resistance stewardship preserve product efficacy across successive seasons.
Practical application recommendations:
- Early intervention: Spray when caterpillars are in early instars (first or second stage) or upon observing economic threshold egg-laying in the field.
- Canopy spray coverage: Use hollow cone nozzles to achieve complete coverage of inner and lower leaves where larvae shelter and feed.
- Chemical rotation: Rotate sprays with alternative insecticide modes of action (such as diamides or spinosyns) to prevent resistance development.
- Safe handling: Use standard personal protective equipment including gloves and face masks, observing registered pre-harvest intervals before picking.
Official source
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Directorate of Plant Protection, Quarantine & Storage ↗Related on KisanPe
Common questions
What are the active ingredients in Plethora insecticide by Adama?
Plethora contains Novaluron 5.25% (a chitin synthesis inhibitor) and Indoxacarb 4.5% (a nerve sodium channel blocker) formulated as an SC.
How quickly does Plethora stop caterpillar feeding damage?
Because Indoxacarb blocks nerve impulse transmission, caterpillar feeding halts within a few hours of ingestion, preventing further crop defoliation.
Which major pests are controlled by Plethora?
It controls Spodoptera litura, Fall Armyworm, Helicoverpa armigera, Diamondback Moth (DBM), and fruit borers across cotton, chilli, soybean, and vegetable crops.
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
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