Spinetoram chemistry and neurological mode of action
Spinetoram combines the environmental compatibility of biological fermentation with the speed and residual longevity of modern synthetic chemistry.
- Allosteric activator of nicotinic acetylcholine receptors (nAChR, IRAC Group 5) and GABA receptors.
- Induces rapid neuromuscular tremors, paralysis, and swift mortality in target insect pests.
- Translaminar mobility: Moves into leaf tissue to eradicate thrips and borers feeding on leaf undersides.
- Favourable environmental profile with minimal adverse impact on key predatory beneficial insects.
Target crops and major pest spectrum
Delegate is officially registered for controlling difficult-to-manage pest complexes in high-value commercial crops.
- Chilli: Unmatched control of western flower thrips and yellow/black thrips (Scirtothrips dorsalis) causing leaf curl.
- Cotton: Effective suppression of thrips and early-season bollworms.
- Soybean and Pulses: Control of leaf miners, semiloopers, and pod borers.
- Onion and Vegetables: Control of onion thrips and foliage-feeding lepidopteran caterpillars.
Application timing, spray volume, and pollinator safety
Apply Delegate at the initial threshold appearance of thrips nymphs or young caterpillars using fine hollow cone nozzles for thorough canopy penetration. Because Spinetoram is toxic to foraging bees when wet, avoid spraying during daylight hours when pollinators are active; schedule sprays during the late afternoon or early evening.
Official source
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Central Insecticides Board and Registration Committee ↗Related on KisanPe
Common questions
What is the technical active ingredient in Delegate insecticide?
Delegate contains Spinetoram 11.7% SC, a semi-synthetic spinosyn derivative produced by bacterial fermentation.
Which major pest does Delegate effectively control in chilli crops?
It is widely regarded for controlling severe thrips infestations that cause leaf curl and flower drop in chilli.
When should Delegate be sprayed to safeguard foraging honeybees?
Apply in the late evening after honeybees have ceased foraging to allow spray deposits to dry completely overnight.
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
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