Sten -Glufosinate Ammonium 13.5% Sl
Sten is a powerful herbicide by Coromandel International that eliminates weeds efficiently, supports healthy crop growth, improves nutrient uptake, and enhances farm productivity.
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Sten Herbicide (Glufosinate Ammonium 13.5% SL) – Expert Weed Control
The ultimate "Contact Herbicide" for tough, resistant weeds in Cotton, Tea, and Orchards.
Sten is a premium broad-spectrum herbicide brought to you by Coromandel International. Unlike ordinary weed killers, Sten is designed for the modern farmer facing labor shortages and "hard-to-kill" weeds. It provides a powerful alternative to Glyphosate, specifically targeting weeds that have developed resistance to other chemicals.
Best For: Farmers looking for rapid weed burnout without damaging the soil or the roots of their main tree crops.
Why Choose This Product? Key Benefits
- ⏱️Rapid Action: Starts working immediately. You will see weeds turning yellow and browning within 3 to 5 days of spraying.
- ?️Resistance Breaker: Highly effective against weeds like Commelina and Eleusine that survive Glyphosate sprays.
- ⏳No Soil Residue: Sten degrades rapidly in the soil (3–20 days). It does not leach into groundwater or affect the next crop you plant.
- ?️Rainfastness: The formulation locks into the leaf quickly. It is safe from wash-off if it doesn't rain for 4 to 6 hours after spraying.
- ?Crop Safety: As a contact herbicide, it only kills what it touches. It minimizes the risk of systemic damage to the roots of established orchard trees.
Technical Specifications
| Parameter | Details |
|---|---|
| Brand Name | Sten |
| Technical Name | Glufosinate Ammonium 13.5% SL |
| IRAC MoA Code | Group 10 (Glutamine Synthetase Inhibitor) |
| Chemical Group | Phosphinic Acid |
| Formulation | Soluble Liquid (SL) |
| Toxicity Label | Blue Label (Moderate Toxicity) |
How It Works: Mode of Action
Sten works differently than Glyphosate. It is a "Contact" herbicide that relies on sunlight to activate its power.
- Inhibition: Sten blocks an essential plant enzyme called Glutamine Synthetase.
- Ammonia Buildup: Because this enzyme is blocked, the plant cannot process nitrogen correctly. This leads to a massive buildup of Ammonia inside the plant cells.
- Self-Destruction: The accumulated ammonia becomes toxic to the plant, destroying cell membranes and stopping photosynthesis. The weed essentially poisons itself.
Note: This process requires active photosynthesis, so Sten works best on bright, sunny days.
Target Crops & Pests
| Crop | Target Pest(s) |
|---|---|
| Cotton | Echinochloa (Barnyard grass), Dactyloctenium, Cynodon dactylon, and general broadleaf weeds. (Inter-row spray only). |
| Tea | Borreria, Imperata cylindrica, Digitaria, and Commelina benghalensis. |
| Grapes & Pomegranate | Hard-to-kill perennial grasses, Sedges (Cyperus), and broadleaf weeds under the vine/tree canopy. |
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) |
|---|---|---|---|---|
| Tea | 1000 - 1500 ml | 200 - 250 L | 5 - 7.5 ml | Refer to Label |
| Cotton | 1000 - 1500 ml | 200 - 250 L | 5 - 7.5 ml | Refer to Label |
| Non-Crop Areas | 1500 ml | 200 L | 7.5 ml | - |
*PHI = Pre-Harvest Interval: The minimum number of days to wait between the last spray and harvesting.
How to Apply: Best Practices
- Timing: Apply when weeds are young (2-4 inches tall) and actively growing. Best results are seen when sprayed on bright, sunny days.
- Mixing: Use clean water. Since Sten relies on contact, ensure you use the recommended high water volume (200L/acre) to drench the weeds completely.
- Coverage: Use Flat Fan or Flood Jet nozzles for uniform coverage. Avoid drift onto the main crop.
- Safety: Always wear PPE (gloves, mask, goggles). Wash hands thoroughly after use. For Tea and Cotton, use a Spray Shield/Hood to protect the crop leaves.
Frequently Asked Questions
1. How is Sten different from Glyphosate?
Sten is a "Contact" herbicide, meaning it kills only the parts of the weed it touches. Glyphosate is "Systemic" and moves to the roots. Sten is faster (3-5 days) and better for resistant weeds, but requires better coverage.
2. Will Sten kill the roots of the weeds?
Sten primarily burns the top foliage. While it severely damages annual weeds, some perennial weeds may regrow from the roots over time, requiring a follow-up spray.
3. Can I use Sten during the rainy season?
Yes, but ensure there is a rain-free window of at least 4-6 hours after spraying for the chemical to be absorbed.
4. Can I spray this over my standing crop?
No. Sten is non-selective and will damage any green plant tissue it touches. Always use a protective hood/shield when spraying between rows of Cotton or Tea.
5. What nozzle should I use?
Use a Flat Fan or Flood Jet nozzle. Do not use Hollow Cone nozzles (used for insecticides) as they create fine mist that may drift onto your crop.
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.
