Chemical Class and Synaptic Neuro-Transmission Blockade
Padan features the active ingredient Cartap Hydrochloride 50% SP, a synthetic derivative of the natural marine worm toxin nereistoxin. It acts as a blocker of nicotinic acetylcholine receptors (nAChR) in insect central nervous systems.
Unlike organophosphates that cause convulsions, Cartap halts neurotransmission across cholinergic synapses, resulting in flaccid neuromuscular paralysis, rapid cessation of feeding, and death without insect agitation.
- Active ingredient: Cartap Hydrochloride 50 percent w/w SP (Soluble Powder)
- Insecticide group: IRAC Group 14 (Nicotinic acetylcholine receptor channel blockers)
- Action mode: Systemic xylem uptake, contact toxicity, and stomach action
- Selectivity: High safety margins for beneficial predatory spiders and aquatic fauna
CIBRC Approved Target Crops and Pests
The Central Insecticides Board and Registration Committee (CIBRC) registers Padan 50% SP for destructive lepidopteran boring and folding pests in cereal and plantation crops.
When sprayed on foliage, the molecule penetrates leaf tissues and moves systemically throughout vascular channels, controlling stem-boring caterpillars feeding inside tillers.
- Paddy (Rice): Yellow stem borer (*Scirpophaga incertulas*), leaf folder (*Cnaphalocrocis medinalis*), and whorl maggot
- Sugarcane: Early shoot borer (*Chilo infuscatellus*) and internode borer
- Vegetables (Select registrations): Diamondback moth larvae and leaf miners
- Systemic mobility: Upward xylem translocation protecting expanding vegetative leaves
Application Guidelines, Timing, and Safe Handling
Dissolve Padan 50 SP in clean water according to label recommendations. Apply at the economic injury threshold when stem borer egg masses appear or when leaf fold damage exceeds 10 percent.
Maintain calibrated sprayer pressure with hollow-cone nozzles for complete canopy coverage. Applicators must wear personal protective gear and avoid breathing chemical dust during tank pre-mixing.
- Application timing: At early egg hatching or initial vegetative dead-heart symptom onset
- Water volume: 500 liters per hectare for knapsack manual spray equipment
- Pre-Harvest Interval (PHI): Comply with statutory waiting periods prior to harvest
- Protective gear: Wear rubber gloves, eye goggles, and protective nose mask
Official source
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Central Insecticides Board and Registration Committee (CIBRC) ↗Related on KisanPe
Common questions
How does Padan differ from organophosphate insecticides?
Padan is a nereistoxin analogue (IRAC Group 14) that blocks acetylcholine receptor channels, causing flaccid paralysis and immediate feeding cessation rather than violent convulsions.
Is Padan 50 SP safe for natural enemies in paddy fields?
Padan exhibits favorable selectivity towards non-target predatory spiders like *Lycosa pseudoannulata* compared to broad-spectrum synthetic pyrethroids.
Can Padan 50 SP be used as a seed treatment or seedling dip?
Padan is primarily formulated and registered for foliar spraying; always verify official container labels for approved application techniques.
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
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