Dual Chemical Chemistry and Synergistic Action
Polytrin C combines Profenofos 40% (an organophosphate) and Cypermethrin 4% (a high-potency synthetic pyrethroid) in an emulsifiable concentrate formulation. This dual-action synergy combines two distinct neurotoxic pathways.
Profenofos inhibits the acetylcholinesterase (AChE) enzyme, while Cypermethrin keeps voltage-gated sodium channels open. Together, they overwhelm the insect nervous system, delivering rapid knockdown alongside extended residual suppression.
- Active composition: Profenofos 40 percent + Cypermethrin 4 percent w/w EC
- Insecticide groups: IRAC Group 1B (Organophosphates) + IRAC Group 3A (Pyrethroids)
- Mode of action: Contact, stomach poison, translaminar movement, and proven ovicidal activity
- Synergy advantage: Controls pest populations displaying tolerance to single chemical classes
CIBRC Approved Target Crops and Pests
Polytrin C 44 EC is registered by CIBRC primarily for cotton crops where complex chewing and sucking insect complexes attack concurrently.
Its unique ovicidal properties destroy insect eggs upon contact or as developing embryos attempt to hatch, preventing caterpillar emergence and reducing crop damage.
- Cotton: American bollworm (*Helicoverpa armigera*), spotted bollworm, and pink bollworm
- Sucking pests: Cotton aphids, jassids, and suppression of whiteflies
- Ovicidal action: Penetrates chorion of insect egg masses, preventing hatching
- Translaminar action: Penetrates upper leaf cuticles to control under-leaf caterpillars and thrips
Application Precautions and Safe Spraying Practices
Polytrin C contains an organophosphate active component with a strong odor, necessitating careful handling and personal protective equipment (PPE) during preparation and application.
Spray during early morning or late afternoon to prevent thermal evaporation and protect honeybees. Maintain untreated safety zones around water bodies to protect non-target aquatic organisms.
- Protective equipment: Wear chemical-resistant gloves, apron, protective boots, and face mask
- Pollinator safety: Avoid application during peak bee flight and crop flowering periods
- Aquatic caution: Highly toxic to aquatic ecosystems; do not spray near open water channels
- Waiting period: Strictly adhere to CIBRC crop pre-harvest intervals (PHI)
Official source
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Central Insecticides Board and Registration Committee (CIBRC) ↗Related on KisanPe
Common questions
What is the key benefit of combining Profenofos and Cypermethrin in Polytrin C?
The combination provides multi-mode neurotoxic action that overcomes single-class resistance, delivers rapid knockdown, penetrates leaf undersides, and destroys insect eggs.
Does Polytrin C kill insect eggs (ovicidal activity)?
Yes, Profenofos penetrates egg shells (chorion), neutralizing unhatched larvae inside eggs and reducing the incoming pest population.
Can Polytrin C be used during heavy rainfall?
Allow 2 to 3 hours of rain-free weather following application for the chemical to penetrate leaf tissues and provide rainfast protection.
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
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