Nurelle D 505 (Chlorpyrifos 50% + Cypermethrin 5% EC)
The "One-Two Punch" Insecticide for Hard-to-Kill Complex Pests
Nurelle D 505 is a powerful broad-spectrum insecticide designed for farmers facing heavy pest infestations. By combining the immediate "knockdown" power of Cypermethrin with the long-lasting "vapor action" of Chlorpyrifos, it effectively controls both chewing bollworms and hidden sucking pests in a single spray.
Best For: Cotton, Paddy (Rice), and Vegetable crops facing multiple pest attacks simultaneously.
Why Choose This Product? Key Benefits
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Instant Knockdown: Contains Cypermethrin which paralyzes insects within minutes of contact, stopping crop damage immediately.
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Double Action Power: Attacks pests in two ways (Contact & Stomach), making it effective even against pests resistant to other chemicals.
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Long-Lasting Protection: Remains active on the leaf surface for 10–14 days, reducing the need for frequent re-spraying.
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Vapor Action for Hidden Pests: Releases a gas vapor that penetrates dense leaves to kill pests hiding underneath or inside leaf folds.
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Excellent Penetration: The EC formulation helps the chemical pass through the insect's hard shell and the plant's waxy surface.
Technical Specifications
| Parameter | Details |
|---|---|
| Brand Name | Nurelle D 505 |
| 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 Triangle (Highly Toxic) |
How It Works: Mode of Action
Nurelle D 505 attacks the insect nervous system from two different angles to ensure total control:
- Systemic & Vapor Action (Chlorpyrifos): It enters the insect body through breathing (fumigant action) and feeding (stomach action). It inhibits the enzyme Acetylcholinesterase, causing nerve failure.
- Contact Action (Cypermethrin): As soon as the insect touches the sprayed surface, this component disrupts the sodium channels in the nerves, leading to instant paralysis and knockdown.
- Synergy: The combination prevents pests from recovering. Even if an insect is resistant to one chemical, the other ensures it is eliminated.
This dual attack makes it highly effective against pests that have developed resistance to ordinary sprays.
Target Crops & Pests
| Crop | Target Pest(s) |
|---|---|
| Cotton | Bollworm Complex (American, Spotted, Pink), Aphids, Jassids, Whitefly, Thrips |
| Paddy (Rice) | Yellow Stem Borer, Leaf Folder |
| Vegetables (Brinjal/Okra) | Shoot & Fruit Borer, Aphids, Jassids |
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 | 400 ml | 200 - 400 L | 2 ml | 15 |
| Paddy (Rice) | 250 - 300 ml | 200 - 300 L | 1.5 ml | 15 |
| Vegetables | 350 - 400 ml | 200 L | 2 ml | 15 |
*PHI = Pre-Harvest Interval: The minimum number of days to wait between the last spray and harvesting to ensure food safety.
How to Apply: Best Practices
- Timing: Apply during early morning or late evening to minimize evaporation and avoid harming friendly pollinators like bees.
- Mixing: Add the required quantity of Nurelle D to a small amount of water, mix well, and then add to the main tank. It is compatible with most fungicides but do not mix with alkaline products like Bordeaux mixture.
- Coverage: Ensure full coverage of the plant foliage. For sucking pests, try to target the undersides of leaves where they hide.
- Safety: Always wear PPE (gloves, mask, goggles). Wash hands thoroughly after use. Do not spray near fish ponds or water bodies as it is toxic to aquatic life.
Frequently Asked Questions
1. How quickly does Nurelle D work?
It starts working immediately upon contact. You will see visible results (knockdown of pests) within minutes to a few hours after spraying.
2. Can I use this for sucking pests?
Yes, absolutely. The vapor action of Chlorpyrifos makes it excellent for controlling Aphids, Jassids, and Whiteflies that hide under leaves.
3. Is it rainfast?
Yes, due to its oil-based (EC) formulation, it penetrates the leaf surface quickly. It generally becomes rainfast within 2-3 hours after application.
4. Can I mix it with fertilizers?
It is generally compatible with common soluble fertilizers, but always perform a small jar test first. Avoid mixing with strong alkaline substances (like lime or sulfur).
5. What is the antidote in case of accidental poisoning?
The primary antidote is Atropine Sulphate. In case of ingestion or severe exposure, seek immediate medical attention and show the bottle/label to the doctor.
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 honeybees; avoid use near water bodies and during active flowering.
