Lambda Cyhalothrin 5% EC Insecticide Uses

Lambda Cyhalothrin 5% EC is a synthetic pyrethroid insecticide (IRAC Group 3A), registered for use in India under the Insecticides Act, 1968, formulated as an emulsifiable concentrate (EC). It is used as a foliar spray against a broad range of chewing and sucking insect pests across field crops (cotton, paddy, pulses, sugarcane) and vegetable crops (brinjal, okra, chilli, tomato, cabbage), and is also registered for thrips and leafhopper control in groundnut and onion. This page lists its mode of action, key benefits and the crop-wise recommended dosage as documented on manufacturer labels and cross-checked against independent retailer listings.

Which Problem Is This For? (Symptom Guide)

Not sure whether what you're seeing in the field matches this insecticide's use case? This guide helps match pest damage symptoms to insecticides sold under brand names including Karate (Syngenta).

Mode of Action

Lambda-cyhalothrin belongs to the pyrethroid class of insecticides (IRAC Group 3A, sodium channel modulators). It acts on the insect's nervous system by keeping voltage-gated sodium channels in nerve cell membranes open for longer than normal, causing repeated, uncontrolled nerve firing. This leads to rapid knockdown, paralysis and death of the target insect. It acts through both contact action (absorbed through the insect's cuticle on direct spray contact) and stomach action (ingested when the insect feeds on treated leaf, stem or fruit surface), giving activity against both chewing pests (bollworm, stem borer, fruit borer larvae) and sucking pests (jassids, thrips). It has no systemic movement within the plant, so thorough spray coverage of the crop canopy, including the underside of leaves where sucking pests such as jassids and thrips typically shelter, is essential for good control.

Features & Benefits

• Broad-spectrum contact and stomach-poison activity against both chewing pests (bollworm, stem borer, fruit borer) and sucking pests (jassids, thrips) in the same spray.
• Fast knockdown action on target insects due to its effect on the nerve sodium channel, giving visible pest reduction soon after spraying.
• Effective at a very low use rate (around 0.4–1 ml per litre of water) typical of modern synthetic pyrethroid chemistry, keeping spray-tank quantities small.
• Wide crop label covering field crops, pulses and several vegetable crops, useful for farms growing a mixed cropping pattern.

Recommended Usage of Lambda Cyhalothrin 5% EC Insecticide

The table below gives the recommended dose and water volume per acre for each crop and target pest, based on the manufacturer's product label as reproduced by major agri-input retailers, cross-checked against an independent retailer listing for the same formulation. Always spray in the recommended water volume for uniform coverage, and confirm against the current product label before use.

Doses above are the manufacturer-listed label rates reproduced by a major agri-input retailer, converted where necessary using 1 ha ≈ 2.47 acres. These crop/pest combinations and per-acre dose ranges are broadly corroborated by an independent retailer listing for the same 5% EC formulation, though exact figures for individual crops varied slightly between sources (for example, cotton and paddy doses on one independent listing were closer to a flat 200 ml/acre) — treat the ranges above as indicative and always confirm the exact rate on your current product label. A general pre-harvest interval (PHI) of around 15 days for field crops and 5 days for vegetables is commonly cited by retailers for this formulation, but this was not confirmed on an official label source, so it is marked (unverified - single source) and should be checked against your product label before harvest.

How to Use

1. Identify your crop and target pest from the table above, and confirm the correct dose per acre and water volume.
2. Measure the required quantity of Lambda Cyhalothrin 5% EC and mix it thoroughly into the spray tank water, agitating well before and during spraying so the emulsion stays evenly mixed.
3. Apply as a fine, uniform spray covering the entire crop canopy, including the undersides of leaves where sucking pests such as jassids and thrips typically shelter.
4. Spray during the early morning or late evening when pest activity is highest and pollinator activity is lowest, and avoid spraying in hot, windy conditions or ahead of expected rain.
5. Repeat only if pest pressure resumes, allowing at least 10–14 days between sprays, and avoid exceeding 2–3 applications per season on the same crop to help manage resistance development.
6. Do not tank-mix with strongly alkaline materials unless specifically recommended on the label, and always do a small jar-compatibility test before mixing with an unfamiliar product.

Precautions & Safety

• Wear appropriate PPE — mask/respirator, gloves, goggles and full-sleeved clothing — while mixing and spraying.
• Lambda-cyhalothrin is highly toxic to bees, fish and other aquatic life; do not spray during crop flowering when bees are foraging, and avoid any drift or runoff into ponds, canals or water bodies.
• Store in the original, tightly closed container in a cool, dry place away from direct sunlight, food and feed, and out of reach of children and livestock.
• Do not exceed the recommended dose or spray frequency; repeated, back-to-back use of the same insecticide class can lead to resistance development in target pest populations, so rotate with insecticides from a different mode-of-action (IRAC) group where possible.
• Respect the pre-harvest waiting period before harvesting the treated crop, and confirm the exact figure on your current product label since sources vary.
• Wash hands, face and any exposed skin thoroughly with soap and water after handling or spraying, and change out of contaminated clothing before eating, drinking or smoking.

Brand names mentioned on this page are registered trademarks of their respective owners and are referenced here for identification purposes only; FarmMate is not affiliated with or endorsed by these brands. This page is for general information only — always consult your local agricultural extension office and confirm the current product label before use.