Arsa Herbicide by Crystal (Glufosinate Ammonium 13.5% SL)
The Broad-Spectrum Solution for Tough, Resistant Weeds in Tea & Cotton.
Struggling with weeds that just won't die with ordinary sprays? Arsa Herbicide is a powerful non-selective contact herbicide designed to control the toughest weeds, including those resistant to Glyphosate. Powered by Glufosinate Ammonium 13.5% SL, Arsa acts as a chemical mower, rapidly burning down unwanted vegetation in your plantation and field crops.
Best For: Tea plantations, Cotton (inter-row), and non-crop areas requiring rapid weed clearance.
Why Choose This Product? Key Benefits
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Fast Action: Visible yellowing of weeds within 48 hours and complete kill within 3 to 5 days.
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Safe for Crops: As a contact herbicide, it does not translocate via roots, making it safer for Tea bushes and Cotton (when using a hood).
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Kills Resistant Weeds: Highly effective against weeds that have developed resistance to Glyphosate and Paraquat.
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Superior Rainfastness: Contains 58% surfactant load, ensuring it sticks to leaves and becomes rainfast in just 4–6 hours.
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Broad Spectrum: One shot controls a wide variety of grasses, broadleaf weeds, and sedges.
Technical Specifications
| Parameter | Details |
|---|---|
| Brand Name | Arsa (Crystal Crop Protection) |
| 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 Triangle (Moderately Toxic) |
How It Works: Mode of Action
Arsa works differently from systemic weed killers. It targets the plant's metabolism directly.
- Contact Absorption: The high-load surfactant (58%) helps the chemical instantly penetrate the waxy coating of weed leaves.
- Enzyme Blockade: It inhibits the "Glutamine Synthetase" enzyme. This stops the plant from turning ammonia into nutrients.
- Toxic Buildup: Ammonia accumulates rapidly in the plant cells, destroying the cell membranes and stopping photosynthesis. The weed turns yellow and dies within days.
Note: Because it is a contact herbicide, it kills only the green parts it touches. It does not kill the deep roots of perennial weeds, but effectively "mows" them down.
Target Crops & Pests
| Crop | Target Pest(s) |
|---|---|
| Tea | Borreria hispida, Imperata cylindrica, Commelina benghalensis (Dayflower), Ageratum |
| Cotton | Echinochloa spp, Cyperus rotundus (Nutgrass), Digitaria spp, Dactyloctenium |
| Non-Crop Areas | General vegetation, Parthenium, wild grasses, and broadleaves |
Dosage & Application Guide
The Golden Rule: Always follow the "Dose per Acre" for accurate results. Arsa requires high water volume for good coverage.
Dosage per Acre, Litre, & Pre-Harvest Interval (PHI)
| Crop | Dose (ml / Acre) | Water (L / Acre) | Dose (ml / Litre) | PHI (Days) |
|---|---|---|---|---|
| Tea | 1000 - 1320 ml | 200 Litres | 5.0 - 6.5 ml | 15 Days |
| Cotton | 1000 - 1200 ml | 200 Litres | 5.0 - 6.0 ml | 96 Days |
| Non-Crop | 1200 ml | 200 Litres | 6.0 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 (3–5 leaf stage) and actively growing. Spray on a sunny morning for the best chemical activation.
- Mixing: Use clean water. Do not mix with hard/alkaline water if possible. Ensure proper agitation.
- Coverage: Use a Flat Fan or Flood Jet nozzle. Ensure the weed leaves are thoroughly wet (but not dripping excessively). In Cotton, use a protective hood to avoid touching the crop.
- Safety: Always wear PPE (gloves, mask, goggles). Wash hands thoroughly after use. Avoid drift onto the main crop.
Frequently Asked Questions
1. How is Arsa different from Glyphosate?
Glyphosate is slow-acting and kills the roots (systemic). Arsa is a contact herbicide that acts much faster (3-5 days) and is effective against weeds that have become resistant to Glyphosate.
2. Is it safe to spray Arsa directly on Cotton plants?
No! Arsa will burn cotton leaves. You must use a "Hood" or shield on your sprayer nozzle and spray only in the space between the rows (inter-row application).
3. What happens if it rains after spraying?
Arsa is rainfast within 4 to 6 hours. If it rains immediately after spraying, efficacy may be reduced, and a re-spray might be needed.
4. Can I use Arsa in vegetable crops?
Arsa is officially registered for Tea and Cotton. Using it on vegetables is off-label and risky due to potential crop damage and residues. Consult a local agronomist.
5. Why is the water volume (200L) so important?
Since Arsa kills only what it touches, low water volume leads to spotty coverage and poor results. High water volume ensures every leaf is coated for a complete kill.
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. This product is toxic to aquatic organisms; do not use near water bodies.
