Simha-Lambdacyhalothrin 5% Ec
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Simha Insecticide (Lambda-cyhalothrin 5% EC) by Nichino
The heavy-duty "Fire-Fighter" for immediate pest control in Cotton, Rice, and Vegetables.
Simha (Lambda-cyhalothrin 5% EC) is a broad-spectrum synthetic pyrethroid insecticide manufactured by Nichino India. It acts as a powerful neurotoxin that stops pests instantly. Whether you are battling Bollworms in cotton or Stem Borers in rice, Simha provides a rapid "knockdown" effect, killing insects within hours of contact.
Best For: Farmers seeking an economical, high-speed solution for mixed pest infestations (both caterpillars and sucking pests) in a single spray.
Why Choose This Product? Key Benefits
- ⏱️Rapid Knockdown Action: Stops insects from feeding immediately upon contact, preventing further crop damage within minutes.
- ?️Dual-Mode Protection: Works as both a Contact Poison (hits the insect skin) and a Stomach Poison (toxic if the leaf is eaten).
- ⏳Long-Lasting Residue: Photostable formula remains active on the leaf surface for days, providing a protective shield against new pests.
- ?️Rainfast Capability: The lipophilic (oil-loving) nature ensures it binds tightly to the leaf wax, resisting wash-off from light rains.
- ?Cost-Effective: Highly economical (approx. ₹120–₹160 per acre), making it ideal for budget-conscious farming.
Technical Specifications
| Parameter | Details |
|---|---|
| Brand Name | Simha |
| Technical Name | Lambda-cyhalothrin 5% EC |
| IRAC MoA Code | Group 3A (Sodium Channel Modulators) |
| Chemical Group | Synthetic Pyrethroid (Type II) |
| Formulation | Emulsifiable Concentrate (Liquid) |
| Toxicity Label | Yellow/Blue Triangle (High to Moderate Toxicity) |
How It Works: Mode of Action
Simha targets the nervous system of the insect. It is a "Sodium Channel Modulator."
- Contact & Entry: The chemical penetrates the waxy cuticle of the insect or is ingested.
- Over-Excitation: It jams the sodium channels in the nerve cells open. This causes the nerves to fire uncontrollably.
- Paralysis & Death: The insect experiences tremors ("jitter effect"), stops feeding, becomes paralyzed, and dies rapidly.
Note: It also has a repellent effect, discouraging new pests from entering the treated area.
Target Crops & Pests
[Image of helicoverpa armigera life cycle stages]| Crop | Target Pest(s) |
|---|---|
| Cotton | Bollworms (American, Spotted, Pink), Jassids, Thrips |
| Rice (Paddy) | Stem Borer, Leaf Folder, Green Leaf Hopper (GLH), Hispa |
| Vegetables (Tomato, Brinjal, Chilli) | Fruit Borers, Shoot Borers, Thrips, Mites (Suppression) |
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 | 200 ml | 200 L | 1.0 ml | 21 Days |
| Rice | 125 ml | 150 - 200 L | 0.6 - 0.8 ml | 15 Days |
| Vegetables (Tomato/Brinjal) | 120 ml | 150 L | 0.8 ml | 5 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 bollworms, target the egg-hatching stage for maximum kill.
- Mixing: Ensure water pH is between 5.5 and 7.0. Do not mix with highly alkaline products like Bordeaux mixture.
- Coverage: Simha is a contact poison; thorough coverage of the plant canopy (including the underside of leaves) is critical.
- Safety: Always wear PPE (gloves, mask, goggles). Wash hands thoroughly after use. Avoid skin contact to prevent burning sensations.
Frequently Asked Questions
1. Is Simha systemic?
No, Simha is non-systemic. It works via contact and stomach action. However, it has translaminar properties (penetrates the leaf to kill pests on the underside).
2. Can I use Simha in paddy fields near fish ponds?
No. Lambda-cyhalothrin is highly toxic to fish and aquatic life. Avoid using it where runoff water can enter fish ponds.
3. Does it kill mites?
Simha suppresses mite populations (like Yellow Mites in chilli) but is primarily an insecticide. For severe mite infestations, use a dedicated acaricide.
4. What if I feel a burning sensation on my face after spraying?
This is a common temporary effect called Paraesthesia. Do not use water (it drives the chemical deeper). Apply Vitamin E oil or vegetable oil to soothe the skin. It usually resolves in 24 hours.
5. How does it help with resistance management?
It is a Group 3A insecticide. To prevent resistance, rotate Simha with other groups (like Organophosphates or Diamides) and do not use it for every single spray.
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.