
Katsu Cartap Hydrochloride 4%G
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Katsu Insecticide (Cartap Hydrochloride 4% GR) by IFFCO-MC
The Ultimate "Japanese Technology" Defense Against Stem Borer & Leaf Folder in Paddy
Katsu (Cartap Hydrochloride 4% GR) is a premium systemic insecticide brought to you by the trusted joint venture of IFFCO and Mitsubishi Corporation (Japan). Designed specifically for Indian paddy farmers, Katsu provides robust protection during the critical vegetative stage of the crop.
Unlike standard insecticides, Katsu uses a unique Nereistoxin analogue formula. Once broadcasted, it is rapidly absorbed by the plant's root system, turning the rice plant itself into a fortress against chewing pests like the Yellow Stem Borer and Leaf Folder. It is the ideal, cost-effective choice for breaking pest resistance and ensuring a healthy start for your crop.
Why Choose This Product? Key Benefits
- ⏱️Rapid Cessation of Feeding: Pests stop damaging the crop almost immediately after ingesting the treated plant tissue, preventing "Dead Heart" and "White Ear" symptoms.
- ?️Double Power Action: Works through both Systemic (internal absorption) and Contact action, ensuring hidden larvae inside the stem are eliminated.
- ⏳Resistance Breaker: Highly effective against pests that have developed resistance to common chemicals like Organophosphates and Pyrethroids.
- ?️Easy Application: Granular formulation (GR) designed for easy broadcasting in standing water—no complex spraying equipment required.
- ?Trusted Quality: Leverages Mitsubishi's superior manufacturing standards for high purity and IFFCO’s fair pricing for maximum value.
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 Toxic) |
How It Works: Mode of Action
Katsu works by targeting the nervous system of the insect. It is a Synaptic Blocker that mimics a natural neurotoxin found in marine worms.
- Systemic Uptake: When broadcasted, the granules dissolve in water, enter the soil, and are absorbed by the rice roots. The chemical moves up the plant (acropetal movement).
- Ingestion & Contact: As the Stem Borer or Leaf Folder feeds on the plant stem or leaves, they ingest the toxin.
- Nerve Blockade: The active ingredient blocks the transmission of nerve signals (at the Nicotinic Acetylcholine Receptor), causing paralysis. The insect stops feeding immediately and dies from starvation and respiratory failure.
Note: This unique mechanism allows Katsu to control pests that survive other chemical sprays.
Target Crops & Pests
| Crop | Target Pest(s) |
|---|---|
| Paddy (Rice) | Yellow Stem Borer (Scirpophaga incertulas) |
| Paddy (Rice) | Rice Leaf Folder (Cnaphalocrocis medinalis) |
| Paddy (Rice) | Rice Whorl Maggot |
Dosage & Application Guide
The Golden Rule: Always follow the "Dose per Acre" for accurate results.
Dosage per Acre, Litre, & Pre-Harvest Interval (PHI)
| Crop | Dose (kg / Acre) | Application Method | Dose (kg / Hectare) | PHI (Days) |
|---|---|---|---|---|
| Paddy (Stem Borer) | 7.5 - 10 kg | Broadcast in Water | 18.75 - 25 kg | 20 - 27 |
| Paddy (Leaf Folder) | 7.5 - 10 kg | Broadcast in Water | 18.75 - 25 kg | 20 - 27 |
| Paddy (Whorl Maggot) | 7.5 - 10 kg | Broadcast in Water | 18.75 - 25 kg | 20 - 27 |
*PHI = Pre-Harvest Interval: The minimum number of days to wait between the last spray and harvesting.
How to Apply: Best Practices
[Image of farmer broadcasting fertilizer in paddy field]- Timing: For best results, apply 15-20 days after transplanting (Vegetative Stage) or when the pest crosses the Economic Threshold Level (ETL).
- Mixing: Mix the granules with sand or fertilizer (like Urea) to ensure uniform distribution across the field.
- Coverage: Ensure the field has standing water (2-3 inches deep) at the time of application. Impound (hold) the water for 3 to 4 days to allow the granules to dissolve and be absorbed by the roots. Do not drain immediately.
- Safety: Always wear PPE (gloves, mask, goggles). Wash hands thoroughly after use. Do not use in fields where fish farming is practiced.
Frequently Asked Questions
1. Which company manufactures Katsu?
Katsu is manufactured by IFFCO-MC Crop Science Pvt. Ltd., a joint venture between the Indian Farmers Fertiliser Cooperative (IFFCO) and Mitsubishi Corporation, Japan.
2. Does Katsu control Stem Borer effectively?
Yes, Katsu is highly effective against the Yellow Stem Borer. Its systemic action kills the larvae hiding inside the stem, preventing "Dead Heart" symptoms.
3. Can I use Katsu for vegetables?
No, Katsu 4% GR is specifically labeled for use in Rice (Paddy). For vegetables, other formulations or insecticides should be used to adhere to safety standards.
4. Is Katsu safe for fish in paddy fields?
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 directly into fish ponds.
5. Can Katsu be mixed with Urea?
Yes, farmers commonly mix Katsu granules with Urea or sand to increase the volume, making it easier to broadcast evenly across the field by hand.
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. Antidote Note: The specific antidote for Cartap poisoning is L-Cysteine or BAL, not Atropine. In case of poisoning, seek immediate medical attention.

