Benzer Insecticide by Coromandel (Emamectin Benzoate 5% SG)
The Ultimate Solution for Bollworms and Fruit Borers
Benzer is a high-performance insecticide from Coromandel International (the makers of Gromor). It features Emamectin Benzoate 5% SG, a powerful molecule designed to stop caterpillars and borers in their tracks.
What is the "A121" Code? You may see "Benzer 5 SG + A121" in price lists. Don't worry—this is simply Coromandel’s internal logistics code for the 250g Pack Size. The product inside is the standard, high-quality Benzer you trust.
Why Choose This Product? Key Benefits
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Stops Feeding Instantly: Larvae become paralyzed and stop damaging your crop within hours of ingestion, even if they die 2-4 days later.
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Hidden Pest Control (Translaminar): The medicine penetrates the leaf tissues to kill pests hiding underneath or inside the leaves (like miners).
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Short Waiting Period (PHI): Safe to use on vegetables close to harvest. Residues drop to safe levels quickly (typically 3-7 days).
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Rainfast in 2 Hours: Rapid absorption means rain won't wash it away once it has dried, making it perfect for the monsoon season.
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Safe for Beneficials: While tough on pests, it is safer for beneficial insects and humans (Green Chemistry) compared to older chemicals.
Technical Specifications
| Parameter | Details |
|---|---|
| Brand Name | Benzer |
| Technical Name | Emamectin Benzoate 5% SG |
| IRAC MoA Code | Group 6 (Chloride Channel Activator) |
| Chemical Group | Avermectin (Macrocyclic Lactone) |
| Formulation | Soluble Granules (SG) - Dust Free |
| Toxicity Label | Blue/Yellow (Moderately Hazardous) |
How It Works: Mode of Action
Benzer targets the nervous system of insects specifically. It is highly selective for caterpillars (Lepidoptera).
- Ingestion: The pest eats a treated leaf or comes in contact with the spray.
- Paralysis: The chemical locks the nerve channels open (chloride ion influx), causing instant muscle paralysis.
- Starvation: The paralyzed larvae stop feeding immediately and die within 2 to 4 days.
Note: Because it goes inside the leaf (Translaminar), it keeps working for days after spraying.
Target Crops & Pests
| Crop | Target Pest(s) |
|---|---|
| Cotton | Bollworm Complex (American, Spotted, Pink) |
| Vegetables (Brinjal, Okra) | Fruit & Shoot Borer (Leucinodes), Jassids |
| Cabbage & Cauliflower | Diamondback Moth (DBM) |
| Chilli | Fruit Borers, Thrips & Mites (Suppression) |
Dosage & Application Guide
The Golden Rule: Always follow the "Dose per Acre" for accurate results. Benzer is a granular product, so dosage is measured in Grams (g).
Dosage per Acre, Litre, & Pre-Harvest Interval (PHI)
| Crop | Dose (g / Acre) | Water (L / Acre) | Dose (g / Litre) | PHI (Days) |
|---|---|---|---|---|
| Cotton | 76g - 88g | 200 L | 0.44g | 10-14 |
| Brinjal / Okra | 68g - 80g | 200 L | 0.40g | 3-5 |
| Chilli | 80g | 150 - 200 L | 0.40g - 0.50g | 3-5 |
| Red Gram | 88g | 200 L | 0.44g | 14 |
*PHI = Pre-Harvest Interval: The minimum number of days to wait between the last spray and harvesting. *Note: Dose is in Grams (g) because Benzer is a solid granule.
How to Apply: Best Practices
- Timing: Spray in the late afternoon or evening. UV sunlight can degrade the chemical, and pests are most active at night.
- Mixing: Do NOT mix with highly alkaline substances (like Bordeaux mixture or Lime Sulphur) as this will make Benzer ineffective.
- Coverage: Use a sufficient volume of water (200L/acre) to ensure the crop canopy is thoroughly wet.
- Safety: Always wear PPE (gloves, mask, goggles). Wash hands thoroughly after use.
Frequently Asked Questions
1. Does "A121" mean the chemical is different?
No. "A121" is just an inventory code used by Coromandel for the 250g pack size. The chemical inside is 100% Emamectin Benzoate 5% SG.
2. Does Benzer kill pest eggs?
It is primarily a larvicide (kills caterpillars). It is most effective when applied just as eggs are hatching into 1st stage larvae.
3. Is it safe for export crops?
Yes, Benzer is excellent for export-quality vegetables and grapes because it has a low residue profile if the Pre-Harvest Interval (PHI) is followed.
4. What is the cost per acre?
Benzer is very economical. At a dosage of ~80g per acre, the cost is significantly lower than many newer patented chemistries, offering great value for money.
5. Can I use it with a Drone?
Yes! The "SG" (Soluble Granule) formulation dissolves completely without clogging nozzles, making it perfect for drone spraying.
Safety & Disclaimer
Always read and follow the instructions on the official product label. The information provided here is for guidance only. Use personal protective equipment (PPE) during application.
