
Metacil Lambdacyhalothrin 4.9% Cs
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Metacil Insecticide (Lambda-cyhalothrin 4.9% CS) by Insecticides (India) Ltd
Advanced "Tractor Brand" Protection Against Bollworms, Stem Borers, and Leaf Folders.
Metacil is a flagship product from Insecticides (India) Limited (IIL). Unlike older liquid poisons, Metacil uses modern Capsule Suspension (CS) technology. This means the active ingredient is wrapped in microscopic shells that release slowly, providing longer-lasting protection and higher safety for the farmer. It is highly effective against chewing pests in Cotton, Rice, and Vegetables.
Best For: Farmers looking for a cost-effective (₹200-240/acre for cotton) yet powerful solution for resilient pests.
Why Choose This Product? Key Benefits
- ⏱️Long-Lasting Residual Action: The CS formulation releases the chemical slowly, keeping crops protected for longer than standard EC sprays.
- ?️High User Safety: Encapsulation prevents direct skin contact with the chemical during mixing, reducing itching and irritation common with pyrethroids.
- ⏳Double-Action Power: Works as both a contact poison (kills on touch) and a stomach poison (kills when eaten), ensuring total pest control.
- ?️Rainfastness: The micro-capsules stick firmly to leaves and do not wash off easily during light rains, unlike older liquid formulations.
- ?Crop Safe (No Burn): Water-based formula prevents "scorching" or burning of sensitive leaves, flowers, and young shoots.
Technical Specifications
| Parameter | Details |
|---|---|
| Brand Name | Metacil |
| Technical Name | Lambda-cyhalothrin 4.9% CS |
| IRAC MoA Code | Group 3A (Sodium Channel Modulator) |
| Chemical Group | Synthetic Pyrethroid (Type II) |
| Formulation | Capsule Suspension (Micro-encapsulated) |
| Toxicity Label | Blue Triangle (Moderately Toxic) |
How It Works: Mode of Action
Metacil works on the insect's nervous system. It is a non-systemic insecticide with strong contact and stomach action.
- Nervous System Attack: It binds to the sodium channels in the insect's nerve cells, keeping them open. This causes uncontrollable tremors and paralysis.
- Smart Release (Rupture): The micro-capsules act like "booby traps." When a pest (like a bollworm) walks over a treated leaf, the pressure breaks the capsule, releasing a fresh, lethal dose directly onto the insect.
- Repellent Effect: It also acts as an anti-feedant. Moths dislike the smell/taste and avoid laying eggs on treated plants.
Result: Quick knockdown followed by death of the pest.
Target Crops & Pests
| Crop | Target Pest(s) |
|---|---|
| Cotton | Bollworm Complex (American, Spotted, Pink Bollworm), Jassids, Thrips |
| Rice (Paddy) | Stem Borer, Leaf Folder |
| Vegetables (Brinjal, Tomato, Chilli) | Shoot & Fruit Borer, Thrips, Beetles |
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 ml | 200 L | 2.5 ml | 21 Days |
| Rice (Paddy) | 250 - 300 ml | 150 - 200 L | 1.5 - 2 ml | 15 Days |
| Vegetables (Brinjal/Tomato) | 300 ml | 150 L | 2 ml | 5 Days |
*PHI = Pre-Harvest Interval: The minimum number of days to wait between the last spray and harvesting. Note that vegetables have a short PHI (5 days).
How to Apply: Best Practices
- Timing: Apply when pest population reaches the Economic Threshold Level (e.g., 5% damaged bolls in cotton).
- Mixing: Do NOT mix with alkaline fungicides like Bordeaux mixture or Lime Sulphur, as this destroys the chemical effectiveness.
- Coverage: Use a high volume of water with a hollow cone nozzle to ensure the spray reaches the undersides of leaves where pests hide.
- Safety: Always wear PPE (gloves, mask, goggles). Wash hands thoroughly after use.
Frequently Asked Questions
1. Is Metacil harmful to honeybees?
Yes, it is toxic to bees. Avoid spraying during peak flowering times or spray only in the late evening when bee activity is low.
2. Can I use Metacil for soil application?
No, Metacil 4.9% CS is designed only for foliar (leaf) spray. It binds tightly to soil and will not move to the roots effectively.
3. What is the difference between CS and EC formulations?
CS (Capsule Suspension) is water-based, safer for the skin, and lasts longer. EC (Emulsifiable Concentrate) contains solvents that can irritate skin and evaporates faster.
4. What is the price of Metacil per acre?
It is an economical product. For cotton (500ml dose), the cost is approximately ₹200 - ₹240 per acre, making it highly affordable.
5. Does it control pest eggs?
While primarily a larvicide (kills larvae), it acts as an oviposition deterrent, meaning moths avoid laying eggs on crops sprayed with Metacil.
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. Warning: Highly toxic to fish and aquatic life. Do not use near ponds or water bodies.

