Dual Chemical Chemistry and Mode of Action
Decide pairs etoxazole (a diphenyloxazoline chitin biosynthesis inhibitor) with diafenthiuron (a thiourea oxidative phosphorylation disruptor).
Etoxazole prevents mite eggs from hatching and disrupts moulting in nymphs, while diafenthiuron paralyzes respiration in adult sucking insects.
- Etoxazole Mode of Action: Inhibits chitin synthesis (IRAC Group 10B), breaking the reproductive cycle
- Diafenthiuron Mode of Action: Inhibits mitochondrial ATP synthase (IRAC Group 12A) upon photo-conversion
- Ovicidal and Adulticidal: Controls all life stages including eggs, nymphs, and adult pests
Target Pests and Crop Indications
Decide is recognized for controlling complex pest infestations where sucking insects and mites attack crops simultaneously.
It is widely sprayed in chilli to resolve 'murda' syndrome (leaf curl) caused by yellow mites and thrips.
- Chilli: Yellow mites (Polyphagotarsonemus latus) and chilli thrips (Scirtothrips dorsalis)
- Cotton: Whiteflies, jassids, and two-spotted spider mites
- Brinjal and Vegetables: Red spider mites and whitefly nymph complexes
Application Guidelines and Best Results
Apply Decide during sunny days because diafenthiuron undergoes rapid photochemical conversion on leaves to its active carbodiimide derivative.
Ensure high spray volume with hollow cone nozzles to drench the undersides of leaves where mites congregate.
- Water Volume: Use at least 200 liters of water per acre for thorough vegetative coverage
- Weather Condition: Sunny mornings optimize photo-activation of the active ingredients
- Tank Mixing: Compatible with most neutral agrochemicals; avoid highly alkaline spray solutions
Official source
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Central Insecticides Board & Registration Committee ↗Related on KisanPe
Common questions
What is the technical composition of Decide Dhanuka?
Decide combines etoxazole and diafenthiuron in a water-dispersible granule (WG) formulation.
Does Decide control mite eggs?
Yes, the etoxazole component possesses powerful ovicidal activity that stops mite eggs from hatching.
Why is sunny weather recommended for applying diafenthiuron-based sprays?
Sunlight facilitates the photo-conversion of diafenthiuron into its active insecticidal and miticidal form on plant leaves.
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
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