Katsu Insecticide (Cartap Hydrochloride 4% GR) by IFFCO-MC
The Ultimate Granular Solution for Stem Borer and Leaf Folder in Paddy.
Katsu (Cartap Hydrochloride 4% GR) is a high-performance granular insecticide brought to you by the trusted joint venture of IFFCO and Mitsubishi Corporation. Designed specifically for the Indian rice farmer, Katsu provides robust systemic protection against the most stubborn chewing pests. It works by blocking the pest's nervous system, causing them to stop feeding instantly, ensuring your crop stays green and healthy during the critical vegetative stage.
Why Choose This Product? Key Benefits
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Double Action Power: Acts through both contact and stomach action, stopping pests from feeding immediately upon ingestion.
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Resistance Breaker: Highly effective against pests that have developed resistance to common Organophosphates and Pyrethroids.
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Systemic Protection: Absorbed by the roots and spreads throughout the plant, killing hidden stem borers from the inside out.
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Easy Application: Granular formulation allows for easy broadcasting in standing water—no complex spraying equipment needed.
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Cost-Effective: Offers superior pest control at a budget-friendly price point compared to newer diamide chemistries.
Technical Specifications
| Parameter | Details |
|---|---|
| Brand Name | Katsu |
| Technical Name | Cartap Hydrochloride 4% GR |
| IRAC MoA Code | Group 14 (Nereistoxin Analogue) |
| Chemical Group | Nereistoxin Analogue |
| Formulation | Granules (GR) |
| Toxicity Label | Blue Triangle (Moderately Hazardous) |
How It Works: Mode of Action
Katsu mimics a natural toxin found in marine worms. It targets the insect's central nervous system with a unique mechanism:
- Absorption: The granules dissolve in water, and the active ingredient is absorbed by plant roots and transported to the stem and leaves.
- Synaptic Blockade: When the pest eats the treated plant, the chemical blocks the Nicotinic Acetylcholine Receptor (nAChR) in their nerves.
- Paralysis & Death: This blockage cuts off nerve signals. The insect becomes paralyzed, stops feeding instantly, and dies from starvation.
Target Crops & Pests
| Crop | Target Pest(s) |
|---|---|
| Paddy (Rice) | Yellow Stem Borer (Scirpophaga incertulas) |
| Paddy (Rice) | Rice Leaf Folder (Cnaphalocrocis medinalis) |
| Paddy (Rice) | Whorl Maggot (Hydrellia philippina) |
Dosage & Application Guide
The Golden Rule: Always follow the "Dose per Acre" for accurate results. Ensure standing water is present.
Dosage per Acre, Litre, & Pre-Harvest Interval (PHI)
| Crop | Dose (per Acre) | Water (L / Acre) | Dose (ml / Litre) | PHI (Days) |
|---|---|---|---|---|
| Paddy (Stem Borer) | 7.5 - 10 kg | Broadcast in water | N/A (Granules) | 20-27 Days |
| Paddy (Leaf Folder) | 7.5 - 10 kg | Broadcast in water | N/A (Granules) | 20-27 Days |
| Paddy (Whorl Maggot) | 7.5 - 10 kg | Broadcast in water | N/A (Granules) | 20-27 Days |
*PHI = Pre-Harvest Interval: The minimum number of days to wait between the last spray and harvesting.
How to Apply: Best Practices
- Timing: Apply during the early vegetative stage (15-20 days after transplanting) or when "Dead Heart" symptoms first appear.
- Mixing: Mix the required quantity of Katsu granules with sand or fertilizer (like Urea) to ensure uniform distribution across the field.
- Coverage: Maintain standing water of 2-3 inches (5-7 cm) in the field. Do not drain the water for 3 to 4 days after application to allow the granules to dissolve and act.
- Safety: Always wear PPE (gloves, mask, goggles). Wash hands thoroughly after use. Do not apply in fields used for fish farming.
Frequently Asked Questions
1. Can I use Katsu for vegetables like Brinjal or Cabbage?
No. Katsu (4% GR) is a granular formulation specifically registered for Rice. Using granules on vegetables may result in high chemical residues.
2. Is Katsu safe for fish in my paddy field?
No. Cartap Hydrochloride is toxic to aquatic life. Do not use Katsu if you are practicing rice-fish culture or if the field water drains into fish ponds.
3. How does Katsu compare to Coragen (Chlorantraniliprole)?
Katsu is a cost-effective solution for early-stage pests. Coragen is more potent but significantly more expensive. Many farmers use Katsu early (vegetative stage) and save Coragen for severe late-stage infestations.
4. What is the antidote for accidental Katsu poisoning?
Unlike other pesticides, Atropine is NOT the primary antidote. Medical professionals recommend L-Cysteine or BAL (British Anti-Lewisite) for Cartap poisoning.
5. Why is Katsu better than Fipronil granules?
While both are effective, Katsu is often more affordable per acre. It also has a unique mode of action (Group 14) that works well against pests that may have developed resistance to Fipronil.
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.
