Koranda 505 Insecticide (Rallis India) | Chlorpyrifos 50% + Cypermethrin 5% EC
The trusted "505" heavy-hitter for Cotton and Paddy pest management.
Koranda 505 is a market-leading broad-spectrum insecticide manufactured by Rallis India Limited (A Tata Enterprise). It is a powerful "combo-chemistry" designed to tackle tough pest complexes that single molecules cannot handle. By combining two active ingredients, it provides a dual-force attack on chewing and sucking pests.
Best for: Farmers seeking an affordable, high-impact solution for Bollworms, Stem Borers, and Leaf Folders.
Why Choose This Product? Key Benefits
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Instant Knockdown Power: The Cypermethrin component acts as a shock agent, paralyzing insects within minutes of contact.
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Long-Lasting Protection: Provides residual control on the leaf surface for 10 to 14 days, protecting crops from re-infestation.
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Dual Action Synergism: The "1+1=3" effect: Chlorpyrifos prevents the insect from detoxifying Cypermethrin, making the mix far more lethal than individual sprays.
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Vapor & Fumigant Action: Chlorpyrifos creates heavy fumes that penetrate hidden areas, killing pests inside bolls, leaf folds, and soil crevices.
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Cost-Effective Solution: At approximately ₹260 - ₹310 per acre, it costs roughly 25-30% of modern patent chemistries like Coragen.
Technical Specifications
| Parameter | Details |
|---|---|
| Brand Name | Koranda 505 |
| Technical Name | Chlorpyrifos 50% + Cypermethrin 5% EC |
| IRAC MoA Code | Group 1B (Organophosphate) + Group 3A (Pyrethroid) |
| Chemical Group | Organophosphates + Synthetic Pyrethroids |
| Formulation | EC (Emulsifiable Concentrate) |
| Toxicity Label | Yellow (Highly Toxic) or Blue (Moderately Toxic) depending on pack size |
How It Works: Mode of Action
Koranda attacks the insect nervous system from two different angles, ensuring the pest cannot develop resistance easily.
- Nerve Excitation (Cypermethrin): It targets sodium channels, causing the nerve cells to fire continuously. This leads to immediate spasms and "knockdown" (the insect falls off the plant).
- Enzyme Inhibition (Chlorpyrifos): It inhibits the Acetylcholinesterase (AChE) enzyme. This prevents the nerves from relaxing, leading to paralysis and metabolic exhaustion.
- Synergistic Barrier: Chlorpyrifos also disables the enzymes that the insect would naturally use to detoxify pyrethroids, making the Cypermethrin component significantly more potent.
Result: Comprehensive control of pests through contact, stomach, and vapor action.
Target Crops & Pests
| Crop | Target Pest(s) |
|---|---|
| Cotton | Bollworm Complex (Pink, Spotted, American), Aphids, Jassids, Whitefly |
| Paddy (Rice) | Yellow Stem Borer, Leaf Folder, Hispa |
| Vegetables (Brinjal, Cabbage) | Shoot & Fruit Borer, Diamondback Moth (DBM) |
Dosage & Application Guide
The Golden Rule: Always follow the "Dose per Acre" for accurate results. Over-dosing can cause leaf burn; under-dosing leads to resistance.
Dosage per Acre, Litre, & Pre-Harvest Interval (PHI)
| Crop | Dose (ml / Acre) | Water (L / Acre) | Dose (ml / Litre) | PHI (Days) |
|---|---|---|---|---|
| Cotton | 400 - 500 ml | 200 L | 2.0 - 2.5 ml | 15 |
| Paddy | 350 - 400 ml | 200 L | 2.0 ml | 15 - 30 |
| Vegetables (Brinjal) | 200 - 300 ml | 150 L | 1.5 - 2.0 ml | 7 |
*PHI = Pre-Harvest Interval: The minimum number of days to wait between the last spray and harvesting. Essential for export compliance (MRLs).
How to Apply: Best Practices
- Timing: Use as a mid-season spray. For Paddy Stem Borer, ensure 2-3 inches of standing water to trap the vapors. For Cotton, use when Pink Bollworm crosses ETL.
- Mixing: As an EC formulation, it forms a white emulsion. Add the required quantity to a bucket of water, stir well, and then add to the spray tank.
- Coverage: The vapor action helps reach curled leaves, but ensure uniform coverage using a hollow cone nozzle.
- Safety: Always wear PPE (gloves, mask, goggles). This product is highly toxic. Wash hands thoroughly with soap after use.
Frequently Asked Questions
1. What is the price of Koranda 505 (1 Litre)?
The market price typically ranges between ₹650 and ₹780 per Litre depending on the state and dealer.
2. Can I use Koranda for all vegetables?
Use with caution. While effective on Brinjal and Okra, do not use on leafy greens or crops near harvest due to residue risks. Always check the PHI (7+ days).
3. Does Koranda kill Pink Bollworm?
Yes. It is widely used as a "rescue spray" for Pink Bollworm in Bt Cotton because the Chlorpyrifos vapor penetrates the bolls better than pyrethroids alone.
4. Is Koranda safe for honey bees?
No. Both active ingredients are highly toxic to bees. Do not spray during the active flowering stage (full bloom) or during the day when bees are foraging.
5. What is the antidote for accidental poisoning?
In case of ingestion or severe exposure, the specific antidote is Atropine Sulfate (administered by a doctor) to manage the cholinergic crisis. Immediate medical attention is required.
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. This product is toxic to fish and aquatic organisms; do not use near water bodies.
