Coromandel Josh Insecticide (Cartap Hydrochloride 50% SP)
The "Gromor" Solution for Stem Borer & Leaf Folder Control in Paddy
Coromandel Josh is a powerful, broad-spectrum insecticide designed specifically to protect Rice (Paddy) crops from stubborn chewing pests. Powered by Cartap Hydrochloride 50% SP, it utilizes unique marine-inspired chemistry (Nereistoxin analogue) to break pest resistance where conventional chemicals fail.
Unlike standard surface sprays, Josh works from the inside out. It is a systemic insecticide that absorbs into the plant's vascular system, traveling upwards and downwards to target pests hiding deep inside the stem. Manufactured by Coromandel International, it ensures purity and reliable results for Indian farmers.
Why Choose This Product? Key Benefits
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Rapid "Stop-Feed" Action: Pests stop eating immediately upon contact or ingestion. This prevents crop damage instantly, even before the insect dies.
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Dual-Action Protection: Works as both a systemic agent (internal defense) and a contact poison. It effectively kills hidden pests like Stem Borers inside the plant.
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Resistance Breaker: Effective against pests that have developed immunity to Pyrethroids and Organophosphates. It resets the resistance clock.
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Rainfast Technology: The Soluble Powder (SP) formulation dissolves completely and penetrates leaves quickly, making it resistant to wash-off by rain.
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IPM Compatible: Safe for beneficial insects like spiders and natural enemies, making it an excellent choice for Integrated Pest Management programs.
Technical Specifications
| Parameter | Details |
|---|---|
| Brand Name | Josh (Coromandel International) |
| Technical Name | Cartap Hydrochloride 50% SP |
| IRAC MoA Code | Group 14 (Nereistoxin Analogue) |
| Chemical Group | Thiocarbamate Insecticide |
| Formulation | Soluble Powder (SP) |
| Toxicity Label | Yellow Triangle (Highly Toxic) |
How It Works: Mode of Action
Josh mimics a natural marine toxin (Nereistoxin) to attack the insect's central nervous system. It functions as a Nicotinic Acetylcholine Receptor (nAChR) blocker.
- Systemic Uptake: Upon application, the dissolved powder is absorbed into the plant's vascular system (xylem/phloem), making the entire plant toxic to pests.
- Synaptic Blockade: When the insect feeds, the chemical blocks the nerve receptors, preventing signal transmission.
- Paralysis & Death: The insect suffers immediate paralysis, stops feeding instantly (saving the crop), and dies from starvation.
*This mechanism is unique and effective against pests resistant to other chemical groups.
Target Crops & Pests
| Crop | Target Pest(s) |
|---|---|
| Rice (Paddy) | Yellow Stem Borer (Scirpophaga incertulas) |
| Rice (Paddy) | Leaf Folder (Cnaphalocrocis medinalis) |
| Vegetables (Brinjal/Tomato) | Fruit & Shoot Borer |
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 (g / Acre) | Water (L / Acre) | Dose (g / Litre) | PHI (Days) |
|---|---|---|---|---|
| Rice (Paddy) | 400g - 500g | 200 Litres | 2.0g - 2.5g | 21 - 30 Days |
| Vegetables (Brinjal) | 400g - 500g | 200 Litres | 2.0g - 2.5g | 5 - 7 Days* |
*PHI = Pre-Harvest Interval: The minimum number of days to wait between the last spray and harvesting. *Refer to product label for specific vegetable PHI.
How to Apply: Best Practices
- Timing: Apply at the Economic Threshold Level (ETL)—e.g., when >5% dead hearts are visible or 1 egg mass per m² is found.
- Mixing: Premix the powder in a small quantity of water to create a slurry before adding to the main tank. Do not mix with alkaline products (like Bordeaux mixture).
- Coverage: Use high water volume (200L/acre) to ensure the solution covers the foliage thoroughly for systemic absorption.
- Safety: Always wear PPE (gloves, mask, goggles). Note: The specific antidote for Cartap poisoning is L-Cysteine.
Frequently Asked Questions
1. Does Josh control pests inside the stem?
Yes. Josh is systemic, meaning it penetrates the plant tissue and kills larvae hiding inside the stem (Stem Borer) or folded leaves (Leaf Folder).
2. Can I use Josh with Drone spraying?
Yes. The CIBRC has endorsed Cartap Hydrochloride 50% SP for drone application on Rice due to its high solubility.
3. Is it safe for fish?
No. Josh is toxic to aquatic organisms. Do not use in rice-fish culture systems or allow runoff into ponds.
4. Can I mix Josh with fungicides?
Yes, it is generally compatible with neutral insecticides and fungicides, but never with alkaline materials like Lime Sulphur.
5. What is the antidote for accidental poisoning?
The specific antidote is L-Cysteine. Atropine is not sufficient. Immediate medical attention is required.
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.
