Nurocombi (Chlorpyrifos 50% + Cypermethrin 5% EC) | Powerful "505" Insecticide by FMC
The Ultimate Dual-Action Protection for Cotton, Rice, and Vegetable Crops.
Nurocombi is a premium, broad-spectrum insecticide from FMC India that combines the power of two chemistries. Known popularly as the "505" formulation, it delivers a knockout punch to stubborn pests like Bollworms and Stem Borers. By mixing Chlorpyrifos (for depth and vapor action) with Cypermethrin (for instant contact kill), Nurocombi ensures your crops stay healthy and pest-free.
Best Used For: Controlling mixed infestations of sucking pests and chewing caterpillars simultaneously.
[Image of healthy cotton crop field]Why Choose This Product? Key Benefits
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Instant Knockdown Power: The Cypermethrin component acts immediately upon contact, stopping pests from feeding and damaging the crop instantly.
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Dual-Mode Protection: It works in two ways—Systemic/Vapor action to reach hidden pests, and Contact action to kill pests on the surface.
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Long-Lasting Residual Effect: Nurocombi remains active on the leaf surface, providing prolonged protection against re-infestation for several weeks.
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Vapor Penetration: The strong vapor action penetrates dense crop canopies, reaching pests hiding under leaves or inside crevices.
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Broad Spectrum Control: A single solution that effectively handles both sucking pests (Aphids, Jassids) and chewing larvae (Bollworms, Borers).
Technical Specifications
| Parameter | Details |
|---|---|
| Brand Name | Nurocombi® |
| Technical Name | Chlorpyrifos 50% + Cypermethrin 5% EC |
| IRAC MoA Code | Group 1B (Organophosphate) + Group 3A (Pyrethroid) |
| Chemical Group | Organophosphate + Synthetic Pyrethroid |
| Formulation | Emulsifiable Concentrate (EC) |
| Toxicity Label | Category 3 (Toxic) / Yellow Triangle |
How It Works: Mode of Action
Nurocombi uses a "Double Attack" strategy on the insect's nervous system, ensuring high efficacy.
[Image of synapse acetylcholine inhibition mechanism]- Nervous System Failure (Chlorpyrifos): It inhibits the Acetylcholinesterase (AChE) enzyme. This causes a build-up of neurotransmitters, leading to continuous nerve firing and eventual paralysis of the pest.
- Sodium Channel Block (Cypermethrin): It attacks the sodium channels in the nerve axons, keeping them open. This causes repetitive nerve discharges, leading to hyperexcitability and instant "knockdown."
- Synergistic Effect: The combination ensures that pests resistant to one type of chemical are still eliminated by the other, preventing resistance buildup.
Result: Complete control of the pest population within hours of application.
Target Crops & Pests
| Crop | Target Pest(s) |
|---|---|
| Cotton | American Bollworm, Pink Bollworm, Spotted Bollworm, Aphids, Jassids, Thrips, Whitefly |
| Rice (Paddy) | Stem Borer, Leaf Folder |
| Vegetables (Brinjal, Cabbage) | Shoot & Fruit Borer, Diamondback Moth (DBM) |
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 | 600 ml | 200 - 300 L | 2 - 3 ml | 15 Days |
| Rice (Paddy) | 250 - 300 ml | 200 L | 1.5 ml | 15 Days |
| Brinjal / Cabbage | 300 - 600 ml | 200 L | 1.5 - 3 ml | 14 - 21 Days |
*PHI = Pre-Harvest Interval: The minimum number of days to wait between the last spray and harvesting.
How to Apply: Best Practices
- Timing: Spray at the first sign of pest incidence. For borers, early application prevents larvae from entering the stem or fruit.
- Mixing: Add the required quantity of Nurocombi to a small amount of water, mix well to form a white emulsion, and then add the remaining water.
- Coverage: Use a knapsack or power sprayer to ensure thorough coverage of both the upper and lower surfaces of leaves.
- Safety: Always wear PPE (gloves, mask, goggles). Wash hands thoroughly after use. Avoid spraying near fish ponds or water bodies.
Frequently Asked Questions
1. What pests does Nurocombi control best?
It is excellent for the "Bollworm complex" in cotton and Stem Borers in rice, as well as sucking pests like aphids.
2. Is Nurocombi (Insecticide) related to "Nurokind" medicine?
No! This is a dangerous confusion. Nurocombi is a toxic agricultural pesticide. Nurokind is a Vitamin B12 medicine. Keep them stored separately and far away from each other.
3. What is the dose for a 15-liter pump?
For cotton (high dose), use approximately 40-50 ml per 15-liter tank. For rice (low dose), use approximately 30 ml per tank.
4. Can I mix Nurocombi with fungicides?
Yes, it is generally compatible with most common fungicides. However, always perform a small "jar test" before mixing in the main tank.
5. Is it safe for fish?
No. Nurocombi is highly toxic to fish and crabs. Do not clean sprayers in ponds or let runoff enter aquaculture areas.
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. Do not induce vomiting if swallowed; seek immediate medical help.
