Kritap 4G Insecticide (Cartap Hydrochloride 4%)
The Ultimate Systemic Solution for Yellow Stem Borer and Leaf Folder in Rice.
Kritap 4G is a powerful, granular insecticide designed specifically for the paddy ecosystem. Powered by Cartap Hydrochloride, it uses a unique marine-toxin derived formula to provide complete systemic protection. Unlike surface sprays, Kritap 4G works from the inside out, turning the rice plant into a fortress against hidden pests like Stem Borers.
Best for: Farmers looking for a cost-effective, easy-to-broadcast solution during the vegetative stage of the crop.
Why Choose This Product? Key Benefits
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Immediate "Stop-Feeding" Action: Pests are paralyzed and stop damaging your crop almost instantly after contact, even before they die.
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Deep Systemic Protection: The active ingredient is absorbed by the roots and travels up the stem, killing hidden larvae (borers) that sprays cannot reach.
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Long-Lasting Residue: Provides extended protection during the critical vegetative phase, reducing the need for frequent re-application.
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Designed for Standing Water: Specialized granules dissolve effectively in paddy water, creating a chemical barrier without washing away easily.
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Beneficial Friendly: When used as directed, it is relatively safe for predatory spiders and natural enemies compared to synthetic pyrethroids.
Technical Specifications
| Parameter | Details |
|---|---|
| Brand Name | Kritap 4G |
| Technical Name | Cartap Hydrochloride 4% GR |
| IRAC MoA Code | Group 14 (Nereistoxin Analogue) |
| Chemical Group | Thiocarbamate |
| Formulation | Granules (GR) |
| Toxicity Label | Yellow Triangle (Highly Toxic) |
How It Works: Mode of Action
Kritap 4G mimics a naturally occurring toxin found in marine worms. It acts as a "stomach poison" and contact insecticide.
- Systemic Uptake: The granules dissolve in water and are absorbed by the plant roots, moving up into the stem and leaves.
- Neural Blockade: When the insect eats the plant, the chemical blocks the nerve signals (at the nicotinic acetylcholine receptor).
- Paralysis & Death: The insect becomes paralyzed, cannot control its mouthparts, stops feeding immediately, and dies within 24-48 hours.
Target Crops & Pests
| Crop | Target Pest(s) |
|---|---|
| Paddy (Rice) | Yellow Stem Borer (Dead Heart) |
| Paddy (Rice) | Rice Leaf Folder |
| 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 (ml / Acre) | Water (L / Acre) | Dose (ml / Litre) | PHI (Days) |
|---|---|---|---|---|
| Rice (Paddy) | 7.5 kg - 10 kg | Standing Water | N/A (Broadcast) | 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 15-20 Days After Transplanting (DAT) to target the first brood of stem borers. A second dose can be given 35-45 DAT if needed.
- Mixing: Mix the 7.5 kg - 10 kg bag with 10-15 kg of dry sand or fertilizer to ensure you can spread it evenly across the whole acre.
- Coverage: Ensure the field has 2-3 cm (1 inch) of standing water. Keep water outlets closed for 2-3 days so the granules dissolve and absorb completely.
- Safety: Always wear PPE (gloves, mask, goggles). Wash hands thoroughly after use. Do not mix with bare hands.
Frequently Asked Questions
1. Can I mix Kritap 4G with Urea?
Yes, physically they can be mixed. However, apply the mixture immediately. Do not let it sit, as urea can cause the insecticide to degrade and lose power.
2. Is Kritap 4G safe for fish farming (pisciculture)?
No. Cartap Hydrochloride is toxic to fish. Do not use it in rice-fish farming systems or allow field water to drain into fish ponds.
3. How does it control Stem Borer inside the stem?
Kritap is systemic. The plant absorbs the poison, making the stem tissue toxic. When the larva bores into the stem and eats the tissue, it dies.
4. What should I do if the chemical is accidentally swallowed?
Seek medical help immediately. The specific antidote is L-Cysteine. Do not rely solely on Atropine.
5. Can I use it on other crops?
Kritap 4G is primarily designed and registered for Rice (Paddy) due to its granular application method requiring standing water.
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.
