Lethal GR Insecticide (Chlorpyrifos 10% Granules)
The Ultimate Soil Guardian: Specialized Protection Against Termites, Borers, and Root Grubs.
Lethal GR (Lethal 10G) by Insecticides (India) Ltd (IIL) is a powerful granular insecticide designed to protect your crops from the ground up. Unlike sprays that wash away, these granules settle in the soil to form a tough chemical barrier against hidden enemies like termites and stem borers.
Best For: Farmers seeking cost-effective, long-lasting root protection in Paddy (Rice), Sugarcane, and Vegetable crops.
Why Choose This Product? Key Benefits
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Double Action Power: Kills pests through contact (touch) and stomach action (eating), ensuring no pest survives.
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Long-Lasting Residual Control: Provides extended protection for 2 to 4 months, keeping roots safe throughout the critical growth stages.
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Slow-Release Technology: The granules slowly release the active ingredient, providing a "fumigant effect" that reaches pests hidden deep in soil pores or plant stems.
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Weather Resistant: Highly lipophilic (oil-loving), meaning it binds tightly to soil and does not easily wash away with rain or irrigation.
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Cost-Effective: An affordable solution specifically engineered for Indian farming conditions and small landholdings.
Technical Specifications
| Parameter | Details |
|---|---|
| Brand Name | Lethal GR (Also known as Lethal 10G) |
| Technical Name | Chlorpyrifos 10% GR |
| IRAC MoA Code | Group 1B (Organophosphate) |
| Chemical Group | Organophosphates |
| Formulation | Granules (GR) |
| Toxicity Label | Yellow Triangle (Highly Toxic) ☠️ |
How It Works: Mode of Action
Lethal GR attacks the nervous system of the insect. It inhibits a vital enzyme called Acetylcholinesterase (AChE), causing continuous nerve firing, paralysis, and elimination of the pest.
- Contact Action: The moment a termite or larva touches the granule or treated soil, the chemical penetrates their outer shell.
- Stomach Action: Soil pests that eat plant roots or swallow soil particles ingest the poison, which becomes lethal inside their gut.
- Fumigant Action: In warm, humid fields (like Paddy), the granules release vapors that penetrate plant stems to kill hidden borers.
[Image of Acetylcholinesterase inhibition mechanism]
Target Crops & Pests
| Crop | Target Pest(s) |
|---|---|
| Paddy (Rice) | Yellow Stem Borer, Leaf Folder, Gall Midge |
| Sugarcane | Termites, Early Shoot Borer, Root Borer |
| Vegetables & Plantations | White Grubs, Cutworms, Termites (Groundnut, Maize, etc.) |
Dosage & Application Guide
The Golden Rule: Always follow the "Dose per Acre" for accurate results. Since this is a granular product, it is broadcasted directly and not mixed with water.
Dosage per Acre & Pre-Harvest Interval (PHI)
| Crop | Dose (kg / Acre) | Water (L / Acre) | Method | PHI (Days) |
|---|---|---|---|---|
| Paddy (Rice) | 4 kg (approx. 10 kg/ha) | N/A (Granule) | Broadcast in standing water | 30 Days |
| Sugarcane | 10 - 15 kg | N/A (Granule) | Soil Application in Furrows | Harvest Safe |
| Vegetables/Onion | 4 kg | N/A (Granule) | Soil Incorporation | Check Label |
*PHI = Pre-Harvest Interval: The minimum number of days to wait between the last spray and harvesting.
How to Apply: Best Practices
- Timing (Paddy): Apply 15-30 days after transplanting or when "Dead Heart" symptoms appear.
- Mixing: No water needed. Broadcast granules directly by hand (wearing gloves) or using a mechanical spreader.
- Coverage (Important): For paddy, maintain 2-3 inches of standing water for 3-5 days after application to allow the chemical to dissolve and spread. Do not drain the field immediately.
- Safety: Always wear PPE (gloves, mask, goggles). Wash hands thoroughly after use. Toxic to fish—do not use near ponds.
Frequently Asked Questions
1. Is Lethal GR effective for termites in building foundations?
Yes. While primarily agricultural, it is also effective for Pre-Construction Anti-Termite Treatment under floors (Plinth) and in foundation trenches to create a chemical barrier.
2. Can I use this for home garden pots?
Yes, but in very small quantities (grams) mixed with soil. It is excellent for protecting roots of rose, hibiscus, and vegetable plants from white grubs. Keep away from pets and children.
3. What is the shelf life of Lethal GR?
When stored in a cool, dry place in its original packaging, Lethal GR has a shelf life of 12 to 24 months.
4. Is it safe for fish?
No. Chlorpyrifos is highly toxic to aquatic life. Do not apply in paddy fields that are connected to fish ponds or aquaculture systems.
5. How is this better than liquid sprays?
Granules provide longer residual control (months vs. days) and are safer to handle as there is no risk of inhaling fine spray mist. They are specifically designed for soil pests that sprays cannot reach.
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 a "Yellow Triangle" pesticide; handle with extreme care.
