IIL Lethal Gold Insecticide - Bifenthrin 3% + Chlorpyriphos 30% EC for Termites, Borers & Sucking Pests

IIL Lethal Gold is a dual-action, broad-spectrum insecticide from Insecticides India Limited (IIL), the trusted Tractor Brand. It combines two powerful active ingredients — Bifenthrin 3% and Chlorpyriphos 30% — in an Emulsifiable Concentrate (EC) formulation. This combination belongs to two different chemical groups: Pyrethroid (Bifenthrin) and Organophosphate (Chlorpyriphos), making it highly effective against a wide range of chewing and sucking pests, including termites, borers, aphids, bollworms, leaf folders, and whiteflies.

Lethal Gold works through contact, residual, and fumigant action, providing fast knockdown of pests and extended protection in the field. It is suitable for use on major crops such as cotton, rice (paddy), wheat, sugarcane, groundnut, and vegetables. Farmers value it for its quick visible results, long-lasting residual control, and versatility across different pest situations. The product is classified under Toxicity Class Yellow (moderately toxic) and should be handled with appropriate safety measures.

Key Benefits

• Dual-action pest control: Combines contact and residual activity to stop both sucking and chewing pests effectively.
• Fast knockdown effect: Pests stop feeding and become paralyzed within minutes of spray, reducing crop damage quickly.
• Long-lasting residual protection: Remains active on plant surfaces for 7–10 days, reducing the need for frequent re-spraying.
• Fumigant action for hidden pests: Vapors from Chlorpyriphos penetrate plant stems and leaf folds to kill larvae like stem borers that regular sprays cannot reach.
• Effective against resistant pests: Two different modes of action (sodium channel disruption + AChE inhibition) help manage pest resistance.
• Good rainfastness: Oil-based EC formulation becomes rain-resistant within approximately 2 hours of application.
• Multi-crop versatility: Approved for use on cotton, rice, wheat, sugarcane, groundnut, and vegetables.

How It Works

IIL Lethal Gold uses a dual-mode strategy to attack the insect's nervous system at two different points, making it very difficult for pests to survive or develop resistance.

Bifenthrin (Pyrethroid group): It acts as a nerve poison by keeping the sodium channels in the insect's nerve cells open. This causes continuous nerve firing, leading to uncontrolled shaking, loss of coordination, and immediate paralysis. Pests stop feeding within minutes of contact.

Chlorpyriphos (Organophosphate group): It blocks a vital enzyme called acetylcholinesterase (AChE). This enzyme is needed to stop nerve signals after they are sent. When AChE is blocked, nerve signals keep firing without control, causing a "signal jam" in the insect's brain and nervous system, leading to total system failure and death.

Fumigant effect: In addition to contact and residual action, Chlorpyriphos releases vapors that can enter tiny openings in plant stems and leaf sheaths. This allows the product to reach and kill hidden larvae (such as stem borers) that are protected inside the plant and cannot be reached by surface sprays alone.

Together, these three actions — contact knockdown, residual protection, and fumigant penetration — provide comprehensive pest control that works even under challenging field conditions.

Technical Specifications

Parameter	Details
Brand	IIL (Insecticides India Limited) - Tractor Brand
Product Name	Lethal Gold Insecticide
Active Ingredients	Bifenthrin 3% + Chlorpyriphos 30% EC
Formulation	Emulsifiable Concentrate (EC) - Liquid
Chemical Group	Pyrethroid (Group 3A) + Organophosphate (Group 1B)
IRAC MoA Code	Group 1B + Group 3A
Mode of Action	Contact, residual & fumigant action
Toxicity Class	Yellow (Moderately Toxic)
Target Spectrum	Sucking pests, chewing insects, termites, borers, caterpillars
Rainfastness	Approximately 2 hours
HSN Code	380891
GST Slab	18%

Recommended Dosage & Application

Crop	Target Pests	Dosage (ml/acre)	Water (L/acre)	Dosage (ml/L water)	PHI (Days)
Rice (Paddy)	Yellow Stem Borer, Leaf Folder, Green Leaf Hopper	400 ml	150–200 L	2.0–2.5 ml	15 days
Cotton	Bollworm complex, Whitefly, Thrips	400–500 ml	150–200 L	2.5 ml	15 days
Sugarcane	Termites, Early Shoot Borer	500 ml (drench)	300–400 L	1.5–2.0 ml	30 days
Wheat	Aphids, Armyworm	400 ml	150–200 L	2.6 ml	Refer to label
Groundnut	Leaf miner, Aphids	400 ml	150–200 L	2.6 ml	Refer to label
Vegetables	Caterpillars, Aphids	400 ml	150–200 L	2.6 ml	Refer to label

Note: General dosage: 2.6 ml per litre of water (approximately 40 ml per 15-litre knapsack sprayer). For soil application: 3 litres per acre. For seed treatment: 2–3 ml per kg of seed. Always follow the approved label for crop-specific recommendations in your state.

When to Use

Apply IIL Lethal Gold at the early stages of pest infestation for best results. For rice, spray during the tillering to booting stage when stem borers and leaf folders are first observed. For cotton, apply during the vegetative to flowering stage to manage bollworms and sucking pests. For sugarcane, use during the early vegetative stage to control shoot borer and termites. For all crops, spray in the early morning or late evening when temperatures are lower and beneficial insects like bees are less active. Avoid spraying during peak sunlight hours or when rain is expected within 2 hours of application. Monitor fields regularly and apply when pest pressure reaches the economic threshold level as per local recommendations.

Step by Step Usage Instructions

1. Prepare: Wear full personal protective equipment (PPE) — gloves, mask, goggles, and long-sleeved clothing before handling the product.
2. Fill tank: Fill the spray tank halfway with clean water.
3. Mix: Measure the required dose (e.g., 40 ml for a 15-litre knapsack sprayer or 400 ml per acre). Add the measured quantity to the tank and stir thoroughly.
4. Top up: Fill the remaining tank with water and mix again to ensure uniform dilution.
5. Spray: Use a flat-fan or hollow-cone nozzle for even coverage. Ensure thorough coverage of the foliage, including the underside of leaves where many pests hide. For stem borers, direct the spray toward the base of the plant.
6. Timing: Spray during early morning or late evening for best results and to minimize impact on bees.
7. Post-spray: Wash the spray equipment thoroughly after use. Do not empty or rinse near water bodies.

Compatibility

Lethal Gold is compatible with most commonly used fungicides like Hexaconazole. However, do not mix with alkaline chemicals such as Bordeaux mixture or lime sulfur, as they can reduce the efficacy of the product. Always conduct a jar test before mixing with any new product. If mixing, follow the correct order: fill tank with water, add wettable powders first, then suspension concentrates, and finally EC formulations like Lethal Gold.

Precautions & Safety

• PPE: Always wear gloves, mask, goggles, and full protective clothing while handling and spraying.
• Handling: Avoid inhalation of spray mist and contact with skin or eyes. Wash hands and exposed skin thoroughly with soap and water after use.
• Storage: Store in a cool, dry, shaded place away from food, feed, and drinking water. Keep out of reach of children and animals.
• Environmental safety: This product is highly toxic to fish and aquatic organisms. Do not apply or dispose of near ponds, rivers, or water bodies. Avoid spray drift to non-target areas.
• Empty containers: Do not reuse empty containers for any purpose. Dispose of them safely as per local regulations.
• First aid: In case of accidental poisoning, administer atropine (under medical supervision) and seek immediate medical attention. Show the product label to the doctor.

Side Effects & Phytotoxicity

• This product is toxic to bees. Avoid spraying during flowering periods or when bees are actively foraging.
• Highly toxic to fish and aquatic invertebrates. Maintain a safe distance from water bodies during application.
• For vegetable crops, use only during the early vegetative stage and avoid application near harvest time to ensure food safety.
• Follow the recommended dosage; over-application may cause crop stress in sensitive varieties.

PHI / REI & Storage

• Pre-Harvest Interval (PHI): Minimum 10–15 days for most crops (Rice & Cotton: 15 days, Sugarcane: 30 days). Refer to the product label for crop-specific PHI.
• Shelf life: 2 years from the date of manufacture when stored under proper conditions.
• Storage conditions: Store in a cool, dry place away from direct sunlight and moisture. Keep the container tightly closed when not in use.