Nurelle D 505 Insecticide
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Nurelle D 505 Insecticide (Chlorpyrifos 50% + Cypermethrin 5% EC)
The Ultimate "Rescue Chemistry" for Complex Pest Infestations in Cotton and Paddy.
Nurelle D 505 by Crystal Crop Protection is a heavy-duty, broad-spectrum insecticide designed for farmers facing tough, mixed pest attacks. By combining two powerful active ingredients—Chlorpyrifos (50%) and Cypermethrin (5%)—it delivers a "one-two punch" that eliminates chewing caterpillars and sucking pests simultaneously.
Best For: Controlling American Bollworm, Pink Bollworm, Spodoptera, and sucking pests like Aphids and Whiteflies in a single spray.
Why Choose This Product? Key Benefits
- ⏱️Instant Knockdown Power: The Cypermethrin component acts immediately, stopping pests from feeding within minutes of contact to prevent further crop damage.
- ?️Triple Action Attack: Works through Contact (touch), Stomach (ingestion), and Vapor (gas) action to kill pests hiding in crevices or on the underside of leaves.
- ⏳Long-Lasting Residual Control: The high load of Chlorpyrifos ensures the chemical stays active on the plant surface, protecting your crop for 10 to 14 days after spraying.
- ?️Excellent Rainfastness: The lipophilic (oil-loving) EC formulation sticks well to plant surfaces, resisting wash-off from light rains once dried.
- ?Cost-Effective Synergy: Controls both bollworms and sucking pests in one go, saving you the cost and labor of mixing two different insecticides.
Technical Specifications
| Parameter | Details |
|---|---|
| Brand Name | Nurelle D 505 (Crystal Crop Protection) |
| Technical Name | Chlorpyrifos 50% + Cypermethrin 5% EC |
| IRAC MoA Code | Group 1B (Organophosphate) + Group 3A (Pyrethroid) |
| Chemical Group | Organophosphorus + Synthetic Pyrethroid |
| Formulation | EC (Emulsifiable Concentrate) |
| Toxicity Label | Yellow Triangle (Highly Toxic / Class II) |
How It Works: Mode of Action
Nurelle D 505 uses a synergistic approach to attack the insect nervous system from two different angles, making it highly effective even against resistant pests.
- Synaptic Disruption (Chlorpyrifos): It inhibits the enzyme Acetylcholinesterase (AChE). This causes nerve signals to fire uncontrollably, leading to paralysis and death.
- Nerve Shock (Cypermethrin): It targets the Sodium Channels in the nerve axons, keeping them open. This causes immediate hyperexcitation, tremors, and rapid "knockdown."
- Fumigant Reach: The vapor action of Chlorpyrifos penetrates dense crop canopies, killing pests hiding on the underside of leaves or inside leaf folds.
This dual mechanism ensures that if a pest survives the initial shock, the metabolic poison ensures mortality shortly after.
Target Crops & Pests
| Crop | Target Pest(s) |
|---|---|
| Cotton | American Bollworm, Spotted Bollworm, Pink Bollworm, Spodoptera (Tobacco Caterpillar), Aphids, Jassids, Whitefly. |
| Paddy (Rice) | Yellow Stem Borer, Leaf Folder, Hispa. |
| Vegetables (Brinjal/Okra) | Shoot Borer, Fruit Borer, Epilachna Beetle. |
Dosage & Application Guide
The Golden Rule: Always follow the "Dose per Acre" for accurate results. Do not rely solely on "ml per tank" as tank sizes vary.
Dosage per Acre, Litre, & Pre-Harvest Interval (PHI)
| Crop | Dose (ml / Acre) | Water (L / Acre) | Dose (ml / Litre) | PHI (Days) |
|---|---|---|---|---|
| Cotton | 400 ml | 200 L | 2 ml | 15 Days |
| Paddy (Rice) | 350 - 400 ml | 200 L | 1.7 - 2 ml | 15 Days |
| Vegetables | 400 ml | 200 L | 2 ml | 7 - 14 Days |
*PHI = Pre-Harvest Interval: The minimum number of days to wait between the last spray and harvesting to ensure residues are safe.
How to Apply: Best Practices
- Timing: Apply at the Economic Threshold Level (ETL)—for example, when you see 5% damaged bolls or 1-2 larvae per plant. Avoid spraying during peak flowering to protect bees.
- Mixing: Fill the spray tank half with water, add the required dose of Nurelle D 505, and stir well before adding the rest of the water. Do not mix with highly alkaline products like Bordeaux mixture.
- Coverage: Use a knapsack or power sprayer with a fine nozzle. Ensure thorough coverage of the foliage, as the contact action requires the chemical to touch the pest.
- Safety: This is a Class II toxic product. Always wear full PPE (gloves, mask, goggles, boots). Do not inhale the spray mist. Wash hands and face thoroughly with soap after use.
Frequently Asked Questions
1. Does Nurelle D 505 kill pest eggs (Ovicidal action)?
Yes, it has moderate ovicidal properties, meaning it can destroy the eggs of certain pests like bollworms, preventing the next generation from hatching.
2. Can I use this product on home gardens?
No. Due to its high toxicity and strong odor, it is not recommended for home gardens or indoor use. It is strictly for agricultural field use.
3. Is it safe for honeybees?
No, Chlorpyrifos and Cypermethrin are highly toxic to bees. Do not spray during active foraging hours or when the crop is in full bloom.
4. What is the antidote in case of accidental poisoning?
The specific antidote is Atropine Sulphate (administered by a medical professional) and 2-PAM. Immediate medical attention is required if ingested or inhaled.
5. Can I mix Nurelle D 505 with fungicides?
Yes, it is generally compatible with most common non-alkaline fungicides and liquid fertilizers. However, always perform a small jar test before mixing a full tank.
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 aquatic life; do not use near fish ponds or water bodies.