Xenga Herbicide (Pyrazosulfuron Ethyl 10% WP)
The Specialist Solution for Sedges and Broadleaf Weeds in Rice
Xenga by Coromandel International is a modern, low-dose herbicide designed specifically for Indian paddy farmers. It targets the most stubborn weeds that steal nutrients from your crop: sedges and broadleaf weeds.
Save on labor costs and protect your yield. Xenga replaces the need for expensive manual weeding. Whether you are using traditional transplantation or Direct Seeded Rice (DSR), Xenga provides a protective shield during the most critical first month of crop growth.
Why Choose This Product? Key Benefits
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Stops Weeds Early: Applied within 3-7 days of planting, it kills weeds before they can damage your crop's tillering stage.
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Safe for Paddy: Highly selective formulation. It attacks the weed's enzymes but is rapidly detoxified by the rice plant, ensuring zero crop damage.
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Sedge Specialist: Excellent control over difficult weeds like Cyperus (Motha) and Broadleaves which often escape other grass-killers.
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Easy Application: No fancy machinery needed. Can be mixed with sand and broadcasted directly into standing water.
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Eco-Friendly & Low Dose: Requires only 80g per acre. It breaks down in the soil after doing its job, making it safe for rotation crops like pulses.
Technical Specifications
| Parameter | Details |
|---|---|
| Brand Name | Xenga |
| Technical Name | Pyrazosulfuron Ethyl 10% WP |
| IRAC MoA Code | Group 2 (ALS Inhibitor) |
| Chemical Group | Sulfonylurea |
| Formulation | Wettable Powder (WP) |
| Toxicity Label | Blue / Green (Low Toxicity - WHO Class U) |
How It Works: Mode of Action
Xenga works by "starving" the weeds of essential proteins they need to grow. It is a systemic herbicide, meaning it is absorbed by the roots and leaves and travels to the growing points of the weed.
- Absorption: The weed absorbs the chemical through roots and foliage.
- Inhibition: It blocks the ALS enzyme, which stops the production of vital amino acids (Valine, Leucine, Isoleucine).
- Elimination: Weed growth stops immediately. Within 3-5 days, leaves turn yellow, and the root system dies (bottlebrush effect). Complete death occurs in 14-21 days.
Note: Rice plants naturally detoxify this chemical, keeping your crop green and healthy while the weeds die.
Target Crops & Pests
| Crop | Target Pest(s) |
|---|---|
| Transplanted Rice | Sedges (Cyperus iria, Cyperus difformis), Broadleaf Weeds (Monochoria, Ludwigia) |
| Direct Seeded Rice (DSR) | Sedges, Broadleaf Weeds, Marsilea (Water Clover) |
| Paddy (General) | Suppression of Barnyard Grass (Echinochloa) when used early. |
Dosage & Application Guide
The Golden Rule: Always follow the "Dose per Acre" for accurate results. Applying too late allows weeds to grow too strong for the chemical to work effectively.
Dosage per Acre, Litre, & Pre-Harvest Interval (PHI)
| Crop | Dose (gm / Acre) | Water (L / Acre) | Application Window | PHI (Days) |
|---|---|---|---|---|
| Transplanted Rice | 80g | Sand Mix or 150L Spray | 3 - 7 Days After Transplanting | Safe for Rotation |
| Direct Seeded Rice (DSR) | 80g - 100g | 150 Liters | 5 - 10 Days After Sowing | Safe for Rotation |
| Nursery | Consult Label | Consult Label | 10-15 Days After Sowing | - |
*PHI: This product has a soil half-life of 20-40 days, making it generally safe for subsequent crops like pulses or oilseeds.
How to Apply: Best Practices
- Timing (Crucial): Apply between 3 to 7 days after transplanting (Pre-emergence to Early Post-emergence). Weeds must be small (2-leaf stage).
- Method A (Sand Mix): Mix 80g of Xenga with 8-10 kg of dry sand or fertilizer. Broadcast uniformly across the field.
- Method B (Spraying): Dissolve 80g in 150 liters of water. Use a Flat Fan or Flood Jet nozzle for uniform soil coverage.
- Water Management: Ensure 3-5 cm of standing water in the field at the time of application. Maintain this water level for 3-5 days to allow the chemical to form a barrier. Do not drain the water.
- Safety: Always wear PPE (gloves, mask, goggles). Wash hands thoroughly after use.
Frequently Asked Questions
1. Can Xenga be used for Direct Seeded Rice (DSR)?
Yes. For DSR, apply 5-10 days after sowing when there is sufficient soil moisture. Do not apply if the soil is dry.
2. Does it kill grown grasses like Barnyard grass?
Xenga is primarily for sedges and broadleaf weeds. It suppresses grasses only if applied very early. For heavy grass infestation, follow up with a grass-killer like Bispyribac Sodium (Officer) after 20 days.
3. Can I mix Xenga with Urea?
Yes, Xenga is compatible with common fertilizers and can be mixed with urea for broadcasting to save labor.
4. What if it rains after application?
If broadcasting in standing water, light rain is fine. If spraying, ensure a rain-free period of 6 hours for absorption.
5. Will it harm my next crop (Pulses/Mustard)?
No. Xenga breaks down in the soil within 20-40 days, making it safe for crop rotation in standard Indian conditions.
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.
