Active constituents and neurotoxic mode of action
Natural pyrethrum extract consists of six related monoterpene and cyclopentenolone esters (Pyrethrins I and II, Cinerins I and II, and Jasmolins I and II). These compounds keep voltage-gated sodium channels open in insect nerve membranes, causing repetitive nerve firings, rapid knockdown paralysis, and death.
- Active ingredients: Natural Pyrethrins (derived from chrysanthemum blooms)
- Chemical family: Botanical neurotoxin (IRAC Group 3A natural precursor)
- Rapid knockdown: Paralyzes flying insects within minutes of contact
Applications in agriculture and organic farming
- Organic horticulture: Controlling aphids, thrips, leafhoppers, and whiteflies in certified organic vegetable and fruit crops.
- Post-harvest storage: Protecting stored grain seeds from beetles, weevils, and moths.
- Livestock sheds: Repelling and knocking down flies, mosquitoes, and biting midges in dairy barns and poultry houses.
Environmental breakdown and spraying rules
Natural pyrethrins degrade rapidly when exposed to sunlight and UV radiation, leaving zero harmful chemical residues on harvested food. Spray in early mornings or evenings to maximize active exposure on nocturnal pests, and wear protective masks during application.
Official source
Check the latest rules, benefits and forms here. KisanPe is an independent platform and is not a government website.
Directorate of Plant Protection, Quarantine & Storage ↗Related on KisanPe
Common questions
Where is natural pyrethrum extracted from?
It is extracted from the dried flower heads of Chrysanthemum cinerariifolium plants.
Is pyrethrum approved for certified organic farming?
Yes, natural pyrethrum without prohibited synthetic synergists is approved for organic pest management under national organic standards.
Why does pyrethrum degrade so quickly in sunlight?
Natural pyrethrins are photolabile and break down rapidly into harmless organic compounds upon exposure to UV rays.
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
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