Chandika Insecticide (Chlorpyrifos 50% + Cypermethrin 5% EC)
The "505" Powerhouse: A Dual-Action Solution for Sucking and Chewing Pests.
Chandika is a broad-spectrum insecticide that combines the power of two active ingredients to clear heavy pest infestations. It serves as a "rescue" solution for farmers, effectively controlling the Bollworm complex in Cotton and Stem Borers in Paddy. Its unique formulation provides both immediate knockdown and long-lasting protection.
Best For: Cotton, Paddy (Rice), Brinjal, Cabbage, and Okra.
Why Choose This Product? Key Benefits
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Instant Knockdown Action: Stops pests from feeding within minutes of contact, preventing further crop damage immediately.
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Dual-Power Protection: Combines Contact and Stomach action to kill pests that touch the spray or eat the leaves.
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Ovicidal (Egg-Killing) Properties: Destroys pest eggs before they hatch, breaking the population cycle effectively.
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Powerful Fumigant Action: Produces vapors that penetrate hidden spots, reaching stem borers inside the plant and pests under leaves.
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Cost-Effective Rescue: An economical "one-shot" solution for mixed infestations of worms and sucking pests.
Technical Specifications
| Parameter | Details |
|---|---|
| Brand Name | Chandika |
| Technical Name | Chlorpyrifos 50% + Cypermethrin 5% EC |
| IRAC MoA Code | 1B (Organophosphate) + 3A (Pyrethroid) |
| Chemical Group | Organophosphate + Synthetic Pyrethroid |
| Formulation | Emulsifiable Concentrate (EC) |
| Toxicity Label | Yellow / Red Label (Highly Toxic) |
How It Works: Mode of Action
Chandika uses "Synergistic Toxicology," where two chemicals attack the insect's nervous system simultaneously for a 1+1 > 2 effect.
- Nerve Paralysis (Cypermethrin): Hits the sodium channels in the nerves, causing immediate shock, spasms, and paralysis (Knockdown effect).
- Enzyme Inhibition (Chlorpyrifos): Blocks the Acetylcholinesterase (AChE) enzyme, preventing the nerves from resting, leading to exhaustion and death.
- Systemic Fumigation: The vapor action penetrates plant tissues to kill hidden pests like borers that surface sprays cannot reach.
This double attack ensures that pests resistant to one type of chemical are still eliminated by the other.
Target Crops & Pests
| Crop | Target Pest(s) |
|---|---|
| Cotton | American Bollworm, Spotted Bollworm, Pink Bollworm, Spodoptera, Aphids, Jassids, Thrips, Whitefly. |
| Paddy (Rice) | Yellow Stem Borer, Rice Leaf Folder. |
| Vegetables (Brinjal, Cabbage, Okra) | Shoot & Fruit Borer, Diamondback Moth (DBM), Fruit Borer. |
Dosage & Application Guide
The Golden Rule: Always follow the "Dose per Acre" for accurate results.
Dosage per Acre, Litre, & Pre-Harvest Interval (PHI)
| Crop | Dose (ml / Acre) | Water (L / Acre) | Dose (ml / Litre) | PHI (Days) |
|---|---|---|---|---|
| Cotton | 500 – 1000 ml | 200 – 400 L | 2.5 ml | 15 |
| Paddy (Rice) | 625 – 750 ml | 200 – 280 L | 2.5 - 3 ml | 15 |
| Vegetables (Brinjal/Cabbage) | 300 – 400 ml | 200 L | 1.5 - 2 ml | 5 - 7 |
*PHI = Pre-Harvest Interval: The minimum number of days to wait between the last spray and harvesting.
How to Apply: Best Practices
- Timing: Apply at the Economic Threshold Level (ETL) when pest population starts rising. Avoid spraying during hot mid-day hours.
- Mixing: Compatible with Hexaconazole or Mancozeb. WARNING: Never mix with Bordeaux mixture or alkaline products (lime/calcium), as this destroys the chemical.
- Coverage: Ensure thorough coverage of the foliage. For sucking pests like Aphids, spray the underside of leaves carefully.
- Safety: Always wear PPE (gloves, mask, goggles). Wash hands thoroughly after use. Highly toxic to fish and bees—do not spray near water bodies or during bee foraging.
Frequently Asked Questions
1. What is Chandika mostly used for?
It is primarily used for controlling complex infestations of Bollworms in Cotton and Stem Borers/Leaf Folders in Paddy.
2. Does it control sucking pests?
Yes, it is effective against Aphids, Jassids, Thrips, and Whiteflies due to its systemic and contact action.
3. Can I use it on vegetables?
Yes, it works well on Brinjal and Cabbage, but you must strictly observe the waiting period (PHI) before harvesting to ensure food safety.
4. Is it safe for fish?
No. Chandika is highly toxic to aquatic life. Do not use it near fish ponds, rivers, or canals.
5. What is the waiting period for Rice/Paddy?
The Pre-Harvest Interval (PHI) for Rice is 15 days. Do not harvest the crop within 15 days of the last spray.
Safety & Disclaimer
Always read and follow the instructions on the official product label. The information provided here is for guidance only. Use personal protective equipment (PPE) during application.
