Wartap 50 SP Insecticide (Cartap Hydrochloride 50% SP) - Nichino India
The "Sand-Mix" Specialist: Marine-Inspired Protection Against Stem Borers and Leaf Folders.
Wartap 50 SP is a unique, systemic insecticide derived from the natural toxin of the marine "sand worm." Manufactured by Nichino India, it offers a powerful dual-action defense (contact and stomach) to protect your paddy fields. Unlike common chemical groups, Wartap works differently, making it the perfect choice for breaking pest resistance cycles.
Best For: Farmers looking for an easy-to-apply "sand-mix" solution for Rice or a strong spray for Vegetables to control chewing and sucking pests.
Why Choose This Product? Key Benefits
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Fast-Acting Knockdown: Rapidly paralyzes pests upon contact or ingestion, stopping them from feeding immediately.
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Double Action Protection: Works systemically (absorbed by roots/leaves) to kill hidden borers and by contact to kill exposed larvae.
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Resistance Breaker: Belongs to IRAC Group 14 (Nereistoxin analogue), effective against pests resistant to ordinary sprays.
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Easy Application (Sand-Mix): Can be mixed with sand or fertilizer and broadcasted in standing water—saving labor and spraying time.
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IPM Compatible: Relatively safer for beneficial insects like spiders and mirid bugs compared to broad-spectrum poisons.
Technical Specifications
| Parameter | Details |
|---|---|
| Brand Name | Wartap 50 SP |
| Technical Name | Cartap Hydrochloride 50% SP |
| IRAC MoA Code | Group 14 (Nereistoxin Analogue) |
| Chemical Group | Nereistoxin |
| Formulation | Soluble Powder (SP) |
| Toxicity Label | Yellow / Blue Triangle (Poison/Danger) |
How It Works: Mode of Action
Wartap 50 SP mimics a natural marine toxin. It targets the insect's nervous system, specifically blocking the nicotinic acetylcholine receptors.
- Uptake: The insect absorbs the chemical via contact or by eating treated leaves/stems.
- Blockade: The active ingredient blocks the nerve signals (synapses), preventing muscle contraction.
- Result: The pest stops feeding instantly, becomes paralyzed, and dies due to starvation.
This unique mechanism allows it to control pests that have grown resistant to other common chemicals.
Target Crops & Pests
| Crop | Target Pest(s) |
|---|---|
| Rice (Paddy) | Yellow Stem Borer, Leaf Folder, Whorl Maggot |
| Vegetables (Brinjal, Cabbage) | Shoot & Fruit Borer, Diamondback Moth (DBM) |
| Sugarcane | Early 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 (ml / Acre) | Water (L / Acre) | Dose (g / Litre) | PHI (Days) |
|---|---|---|---|---|
| Rice (Foliar Spray) | 400 - 500 g | 200 L | 2.0 - 2.5 g | 14 - 21 |
| Rice (Broadcast/Sand Mix) | 1000 g (1 kg) | - | Mix with 10-20kg Sand | 14 - 21 |
| Vegetables / Other | 400 - 500 g | 200 L | 2.0 - 2.5 g | 7 - 14 |
*PHI = Pre-Harvest Interval: The minimum number of days to wait between the last spray and harvesting.
How to Apply: Best Practices
- Timing: Apply at the first sign of pest activity (ETL) or preventatively. For Stem Borer, apply at the vegetative stage (Dead Heart) or early reproductive stage (White Ear).
- Mixing (Sand-Mix Method): Mix 1 kg of Wartap 50 SP with 10-20 kg of dry sand or fertilizer. Broadcast uniformly in the field. Ensure 3-5 cm of standing water is present for 48-72 hours.
- Coverage (Spray): If spraying, ensure thorough coverage of the foliage. Use a hollow cone nozzle for best results.
- Safety: Always wear PPE (gloves, mask, goggles). This product is toxic; avoid skin contact and inhalation. Wash hands thoroughly after use.
Frequently Asked Questions
1. Can I use Wartap 50 SP with fungicides?
Yes, Wartap is generally compatible with common rice fungicides like Tricyclazole (for Blast) and Hexaconazole (for Sheath Blight).
2. Is this product safe for fish farming in paddy fields?
No. Cartap Hydrochloride is toxic to fish. Do not use this product if you are practicing rice-fish culture or if the field drains directly into active water bodies.
3. Why is the "Sand-Mix" dose higher than the spray dose?
Broadcasting requires a higher concentration (1 kg/acre) to ensure enough active ingredient dissolves in the standing water and is absorbed by the roots to reach the stems.
4. Does it control Brown Plant Hoppers (BPH)?
It provides suppression of mixed populations, but for severe BPH infestations, a specific hopper-control product like Pymetrozine or Buprofezin is recommended.
5. Can I use this for drone spraying?
While possible, caution is advised. High concentrations in low water volumes (drone application) can sometimes cause leaf tip burn (phytotoxicity). Strictly follow drone-specific dosage guidelines.
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. Contains Cartap Hydrochloride; in case of accidental ingestion, seek immediate medical attention (Specific Antidote: L-Cysteine / BAL).
