IIL Lethal Super 550 Chlorpyriphos 50% EC Insecticide - Broad Spectrum Pest Control

IIL Lethal Super 550 is a powerful, broad-spectrum insecticide from Insecticides India Limited (IIL), formulated with Chlorpyriphos 50% EC (Emulsifiable Concentrate). This liquid insecticide is designed to effectively control a wide range of chewing and sucking pests that damage crops and reduce yields. It works through contact, stomach, and fumigant action, providing comprehensive pest management across multiple crops including paddy, cotton, sugarcane, groundnut, vegetables, pulses, and fruits.

Chlorpyriphos is an organophosphorus compound that disrupts the nervous system of insects, leading to quick paralysis and death. The EC formulation ensures easy mixing with water and uniform spray coverage on plant surfaces. IIL Lethal Super 550 is valued by farmers for its quick knockdown effect, long-lasting residual protection, and versatility in application methods such as foliar spray, soil drench, and seedling dip. It is non-phytotoxic when used at recommended doses and persists in soil for 2-4 months, making it effective against soil-borne pests like termites as well.

Packaged in a durable 1-litre HDPE bottle, this insecticide is easy to handle, store, and apply. Whether you are dealing with sucking pests like aphids, jassids, and whiteflies, or chewing pests like caterpillars, stem borers, and leaf folders, IIL Lethal Super 550 offers reliable, field-proven control that helps protect your crop investment and improve productivity.

Key Benefits

• Broad-spectrum control: Effectively manages both sucking pests (aphids, jassids, whiteflies, thrips) and chewing pests (caterpillars, stem borers, leaf folders, bollworms) in one product.
• Quick knockdown action: Rapidly eliminates pests upon contact and through ingestion, minimizing crop damage during active infestations.
• Long-lasting residual protection: Provides extended pest control, reducing the need for frequent reapplication and saving time and labour.
• Multiple application methods: Can be used as foliar spray, soil drench, or seedling dip, giving farmers flexibility based on pest type and crop stage.
• Soil persistence for termite control: Remains active in soil for 2-4 months, effectively managing termites and other soil-borne pests.
• Non-phytotoxic at recommended doses: Safe on crops when used as per dosage instructions, without causing damage to plant tissues.
• Good compatibility: Easily mixes with most commonly used insecticides and fungicides, allowing flexible tank-mix options.

How It Works

IIL Lethal Super 550 contains Chlorpyriphos 50% EC, an organophosphorus insecticide that works by disrupting the normal functioning of the insect's nervous system. Chlorpyriphos inhibits the activity of an enzyme called acetylcholinesterase, which is essential for transmitting nerve signals. When this enzyme is blocked, the nerve signals keep firing continuously, causing the insect to become hyperactive, then paralysed, and eventually die.

The product has three modes of entry into the pest's body. First, through contact action — when the spray droplets directly hit the insect, the chemical is absorbed through its outer body covering. Second, through stomach action — when pests feed on treated plant surfaces, they ingest the chemical along with the plant material. Third, through fumigant action — the chemical releases vapours that can reach pests hiding in cracks, leaf curls, or soil crevices. This triple mode of action ensures thorough control even in difficult-to-reach areas.

Once inside the pest, the effects are rapid. Sucking pests like aphids and jassids stop feeding soon after exposure, while chewing pests like caterpillars and borers become paralysed and die within hours. The EC formulation creates a stable emulsion in water that spreads evenly on leaves and stems, forming a protective residue that continues to kill pests for days after application.

Technical Specifications

Parameter	Details
Brand	Insecticides India Limited (IIL)
Product Name	Lethal Super 550
Active Ingredient	Chlorpyriphos 50% EC
Formulation Type	Emulsifiable Concentrate (EC)
Chemical Group	Organophosphorus
Mode of Entry	Contact, Stomach, Fumigant
Packaging Size	1 Litre (HDPE Bottle)
Physical Form	Liquid
Toxicity Classification	Yellow Triangle (Moderately Toxic)
Country of Origin	India

Recommended Dosage & Application

Application Method	Dosage per Acre	Dilution
Foliar Spray	300–400 ml per acre	Mix in 200–300 litres of water
Knapsack Sprayer (15L pump)	35–40 ml per 15-litre pump	Fill pump with water after mixing
Per Litre of Water	2.5–3 ml per litre	Mix thoroughly before spraying

Application Methods:

• Foliar Spray: Mix the recommended quantity in water and spray evenly on crop foliage. Best done in morning or evening when temperatures are lower.
• Soil Drench: Apply around the base of plants to control soil-borne pests and termites.
• Seedling Dip: Dip seedling roots in a diluted solution before transplanting to protect young plants from early pest attack.

When to Use

Apply IIL Lethal Super 550 at the first signs of pest infestation for best results. Early intervention prevents pest populations from building up and causing significant crop damage. For sucking pests like aphids, jassids, and whiteflies, spray when you first notice these insects on the underside of leaves or when leaves start curling. For chewing pests like caterpillars, stem borers, and leaf folders, apply as soon as feeding damage (holes in leaves, bored stems) is observed.

For paddy crops, apply during the tillering to panicle stage when stem borers and leaf folders are active. For cotton, spray during the vegetative and flowering stages when bollworms, jassids, and whiteflies are common. For vegetables, apply from the 3-4 leaf stage onward when thrips, caterpillars, and aphids appear. For pulses, use during the vegetative to flowering stage to control pod borers and sucking pests. For fruits, apply at the pre-flowering stage to manage red slug and leaf beetles.

Spray in the early morning or late evening when beneficial insects like bees are less active and the spray droplets dry slowly for better absorption. Avoid spraying during heavy rain or strong winds to prevent runoff and drift.

Step by Step Usage Instructions

1. Wear protective gear: Put on gloves, a mask, and protective clothing before handling the product.
2. Measure the dosage: For a 15-litre knapsack sprayer, measure 35–40 ml of IIL Lethal Super 550. For per-litre mixing, use 2.5–3 ml.
3. Prepare the solution: Fill the spray tank with half the required water. Add the measured insecticide and stir well. Then add the remaining water and mix thoroughly until a uniform milky emulsion forms.
4. Check the sprayer: Ensure the sprayer nozzle is clean and adjusted for fine droplet spray for even coverage.
5. Apply evenly: Spray the solution uniformly on all plant parts, especially the underside of leaves where sucking pests hide. Ensure complete coverage.
6. Clean equipment: After spraying, rinse the sprayer thoroughly with clean water. Do not dispose of rinse water in water bodies.
7. Post-application care: Wash hands and face with soap and water after handling. Store remaining product in a cool, dry place away from food and children.

Compatibility

IIL Lethal Super 550 is compatible with most commonly used insecticides and fungicides. However, it should not be mixed with highly alkaline substances as this can reduce its effectiveness. When mixing with other products, always add the insecticide first to the water, stir well, and then add the second product. It is advisable to conduct a small jar test before large-scale tank mixing to check for any physical incompatibility such as precipitation, gel formation, or separation.

Precautions & Safety

• Personal protection: Always wear gloves, a face mask, goggles, and protective clothing while handling and spraying the insecticide.
• Avoid inhalation and contact: Do not breathe in the spray mist. Avoid contact with skin, eyes, and clothing. If contact occurs, wash immediately with plenty of soap and water.
• Storage: Store in a cool, dry place away from direct sunlight. Keep the container tightly closed. Store away from food, feed, and drinking water.
• Keep away from children and animals: Store in a locked place out of reach of children, pets, and livestock.
• Environmental safety: Do not contaminate ponds, rivers, or other water bodies with the product or its rinse water. Avoid spray drift to neighbouring crops and water sources.
• During application: Do not eat, drink, or smoke while handling the product. Wash thoroughly after spraying.
• First aid: In case of accidental poisoning, induce vomiting only if the person is conscious. Administer atropine as an antidote under medical supervision. Seek immediate medical attention.

Side Effects & Phytotoxicity

IIL Lethal Super 550 is non-phytotoxic to crops when applied at the recommended dosage. However, excessive application or use under extreme weather conditions (very high temperature, drought stress) may cause temporary leaf discolouration or stress in sensitive crops. Always follow the recommended dosage and do not exceed the prescribed concentration. The product is toxic to aquatic organisms and honeybees, so avoid spraying near water bodies and during flowering when bees are actively foraging.

PHI / REI & Storage

• Pre-Harvest Interval (PHI): 15–20 days (allow this gap between last spray and harvest)
• Shelf Life: 2 years from the date of manufacture when stored properly
• Storage Conditions: Store in a cool, dry place away from direct sunlight and moisture. Keep the container tightly sealed. Temperature range: 5°C to 35°C
• Container: Store in original HDPE bottle. Do not transfer to food or beverage containers.