Metolcarb 25% WP – Fast-Acting Carbamate Insecticide for Rice & Vegetable Pests

Metolcarb 25% WP is a carbamate-class insecticide formulated as a wettable powder, designed for rapid knockdown of sucking and chewing pests in rice, vegetables, and other crops. With 25% active ingredient (AI) concentration, it provides contact and stomach action, making it effective against leafhoppers, planthoppers, and aphids 

Key Features & Benefits

✅ Fast-acting formula – Visible pest paralysis within 30–60 minutes
✅ Broad-spectrum control – Targets hemipteran pests (e.g., rice planthoppers, leafhoppers)
✅ Low phytotoxicity risk – Safe for crops when used as directed
✅ Cost-effective – Reduces pest resistance pressure when rotated with other MoA classes
✅ Flexible application – Suitable for foliar spray and seed treatment


Technical Specifications

Parameter Details
Active Ingredient Metolcarb 25%
Chemical Class Carbamate (IRAC Group 1A)
Formulation Type Wettable Powder (WP)
Mode of Action Acetylcholinesterase inhibitor
Target Pests Rice planthoppers, leafhoppers, aphids, thrips
Recommended Crops Rice, vegetables, tea, cotton
Dosage 500–750 g/ha (varies by pest & crop)
PHI (Pre-Harvest Interval) 7–14 days
Shelf Life 2 years (store in cool, dry place)

Target Pests & Application Rates

Crop Pest Dosage (g/ha) Application Method
Rice Brown planthopper 600–750 Foliar spray
Rice Green leafhopper 500–600 Foliar spray
Vegetables Aphids, thrips 400–500 Foliar spray
Tea Tea green leafhopper 600–800 Foliar spray

Best Practices:

  • Apply at early infestation stages for maximum efficacy.

  • Use high-volume sprayers for thorough coverage.

  • Avoid application during peak sunlight or rain (optimal: early morning/late evening).

  • Rotate with neonicotinoids (Group 4A) or diamides (Group 28) to delay resistance

Safety & Environmental Considerations

Toxicity Profile

  • WHO Classification: Moderately hazardous (Class II)

  • Acute Oral LD50 (rat): 250–500 mg/kg

  • Dermal LD50 (rabbit): >2000 mg/kg

  • Aquatic Toxicity: Highly toxic to fish & aquatic invertebrates

Protective Measures

⚠ Mandatory PPE: Gloves, goggles, respirator, long-sleeved clothing.
⚠ Re-entry Interval (REI): 24 hours after application.
⚠ Buffer Zones: Maintain 50m from water bodies to protect aquatic life.

Resistance Management

To prevent pest resistance:

  • Rotate with non-carbamate insecticides (e.g., pyrethroids, neonicotinoids).

  • Limit applications to 2–3 per season.

  • Combine with IPM strategies (e.g., biological controls, pheromone traps)

Packaging & Storage

  • Available sizes: 100g, 250g, 500g, 1kg bags.

  • Storage: Keep in cool, dry conditions (10–30°C), away from food/feed.

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