Insecticide QUINALPHOS 235G/L + LAMBDA - CYHALOTHRIN 15G/L - REPDOR 250EC

Insecticide QUINALPHOS 235G/L + LAMBDA - CYHALOTHRIN 15G/L - REPDOR 250EC

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Insecticide QUINALPHOS 235G/L + LAMBDA-CYHALOTHRIN 15G/L

Ingredients: QUINALPHOS 235G/L + LAMBDA-CYHALOTHRIN 15G/L

Formulation: EC (Emulsifiable Concentrate) – Concentrated emulsifiable form

Uses: Specially effective against caterpillars, leaf rollers, diamondback moths, brown planthoppers, leaf miners, stem borers, red mites, stink bugs, thrips, mealybugs, rice caseworms, and more.

Applicable crops: Rice, orange, tangerine, pomelo, vegetables, industrial crops, etc.

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1. How to Use the Insecticide

Dosage

  • 300 – 500 ml/ha

  • Or 10 – 20 ml per 16–25 L sprayer (depending on the commercial product).

Spraying timing

  • When early instar larvae (1st–2nd instar) first appear.

  • Spray early when detecting larvae moving, feeding, leaf-rolling, or sucking.

Spraying technique

  • Spray thoroughly to wet both sides of the leaves, stems, and leaf sheaths.

  • Avoid spraying during strong sunlight or strong wind.

  • Water volume: 400 – 600 L/ha.

Safety – Pre-harvest interval

  • Wear full protective equipment.

  • Do not allow the pesticide to contaminate water sources.

  • Pre-harvest interval: 7 – 10 days (depending on product label).

2. Detailed Information About the Insecticide Quinalphos + Lambda-cyhalothrin

Active ingredients

  • Quinalphos: 235 g/L

  • Lambda-cyhalothrin: 15 g/L

Chemical groups

  • Quinalphos: Organophosphate group

  • Lambda-cyhalothrin: Synthetic pyrethroid group

Formulation

  • EC (Emulsifiable Concentrate): deep penetration – good adhesion – fast action.

Spectrum of control

Effectively controls many insect pests such as:

  • Leaf rollers

  • Stem borers

  • Thrips, brown planthoppers

  • Green caterpillars, loopers, armyworms

  • Stink bugs, aphids

  • Leaf-feeding pests on vegetables, industrial crops, fruit trees

Advantages of the combination

  • Quinalphos: strong contact and stomach poison activity.

  • Lambda-cyhalothrin: rapid knockdown, strong repellence, good rainfastness.

    → The combination provides fast – strong – broad – long-lasting pest control.

3. Uses of the Insecticide Quinalphos + Lambda-cyhalothrin

Rapid knockdown after spraying

  • Lambda-cyhalothrin delivers a quick “knock-down” effect within minutes.

Effective elimination of hidden and resistant larvae

  • Quinalphos penetrates deep into leaf tissues → kills larvae inside leaves, sheaths, and fruits.

Broad-spectrum activity

Effective against:

  • Chewing insects (diamondback moth, stem borers, armyworms…)

  • Sucking insects (brown planthoppers, thrips, aphids, stink bugs)

Long-lasting action (7–10 days)

  • Reduces spray frequency and saves costs.

Good adhesion – rainfast

  • Maintains effectiveness even under light rain after spraying.

4. Mode of Action

Quinalphos – Cholinesterase inhibitor

  • Disrupts nerve signal transmission in insects.

  • Causes paralysis → larvae stop feeding → die quickly.

  • Acts through contact, stomach poison, and systemic penetration.

Lambda-cyhalothrin – Acts on sodium channels

  • Keeps Na⁺ channels open continuously → excessive nerve stimulation.

  • Causes convulsions – paralysis – rapid death.

  • Strong repellent effect, forcing insects off the leaves.

Combined power

  • Quinalphos: kills hidden larvae + provides long residual control.

  • Lambda-cyhalothrin: rapid knockdown of active larvae.

    → Delivers superior performance compared to using each ingredient alone.

5. Product Images

Notes When Using Abamectin 3.6EC

Alpha Agrochem provides several recommendations when using Glufosinate 150 g/L:

  • Mix the product with clean water.

  • Do not spray on flooded or overly dry soil.

  • Do not spray onto the green tissues of crops.

  • Spray when weeds are mature, flowering, or taller than 30 cm.

  • Wet weeds thoroughly from base to tip.

  • When weeds are flowering or taller than 30 cm, use 800–1000 L/ha of spray solution.

  • Best applied during the active growth stage of weeds.

  • Pre-harvest interval: not specified.

THUAN THANH PHAT INVESTMENT AND TECHNOLOGY JSC

 

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