Vigor 71 Herbicide (Ammonium Salt of Glyphosate 71% SG)
The Ultimate Systemic Solution for Total Weed Control in Tea & Non-Crop Areas.
Vigor 71 by Nichino India is a premium, high-concentration herbicide designed to eliminate the toughest weeds right from the roots. Unlike traditional liquid weed killers, Vigor 71 uses advanced Soluble Granule (SG) technology powered by the Ammonium Salt of Glyphosate.
It effectively targets perennial grasses, sedges, and broadleaf weeds by penetrating deep into the plant system, destroying underground rhizomes and tubers to prevent regrowth.
Why Choose This Product? Key Benefits
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Superior Rainfastness: Absorbs quickly into the leaf surface. It becomes rain-ready in just 2 to 4 hours, compared to 6-8 hours for standard liquid glyphosates.
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Complete Root Kill: Powerful systemic action travels from the leaves down to the roots, effectively killing deep-rooted weeds like Cynodon dactylon (Doob grass) and Cyperus (Motha).
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Hard Water Stable: Formulated with Ammonium Sulphate, it works effectively even when mixed with hard water, preventing calcium from blocking the herbicide's action.
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Higher Concentration: Contains 71% active ingredient. A small 100g sachet delivers the same punching power as huge liquid bottles, making it easier to transport and store.
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Eco-Smart Packaging: Uses dust-free soluble granules (SG) and reduces plastic waste by replacing heavy plastic bottles with efficient pouches.
Technical Specifications
| Parameter | Details |
|---|---|
| Brand Name | Vigor 71 |
| Technical Name | Ammonium Salt of Glyphosate 71% SG |
| IRAC MoA Code | Group 9 (EPSPS Inhibitor) |
| Chemical Group | Organophosphorus / Glycine |
| Formulation | Soluble Granule (SG) |
| Toxicity Label | Blue Triangle (Moderately Toxic) |
How It Works: Mode of Action
Vigor 71 is a non-selective, systemic herbicide. [Image of systemic herbicide translocation in plants]
- Absorption: Upon spraying, the ammonium salt formulation facilitates rapid absorption through the green foliage of the weeds.
- Translocation: The active ingredient moves via the phloem (the plant's food pipe) from the leaves down to the underground storage organs (roots, rhizomes, and tubers).
- Termination: It inhibits the EPSPS enzyme, which is crucial for protein synthesis. This starves the plant, causing complete "brown-out" and death within 14-21 days.
Note: Visible yellowing (chlorosis) typically begins after 5-7 days.
Target Crops & Pests
| Crop | Target Pest(s) |
|---|---|
| Tea Plantations | Imperata cylindrica, Polygonum perfoliatum, Crassocephalum crepidioides, Borreria hispida, Arundinella bengalensis. |
| Non-Crop Areas | Deep-rooted perennials like Parthenium (Carrot Grass), Cynodon dactylon (Doob Grass), and Cyperus rotundus (Motha). |
| Industrial/Railways | General vegetation control for bare ground maintenance. |
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 (g / Acre) | Water (L / Acre) | Dose (g / Litre) | PHI (Days) |
|---|---|---|---|---|
| Tea & Non-Crop | 1200 g (1.2 kg) | 200 L | ~6 g | Refer to Label |
| High Weed Density | 1.2 - 1.4 kg | 200 L | 6 - 7 g | - |
*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 actively growing and have 4-8 leaves. Avoid spraying if weeds are drought-stressed or flowering.
- Mixing: Fill tank half with water, add Vigor 71 granules, allow to dissolve, then top up water. Use clean water for best results.
- Coverage: Use a Knapsack sprayer with a Flat Fan or Flood Jet nozzle to ensure coarse droplets and minimize drift.
- Safety: Always wear PPE (gloves, mask, goggles) as the product is a severe eye irritant. Wash hands thoroughly after use.
Frequently Asked Questions
1. How is Vigor 71 better than standard Glyphosate 41% SL?
Vigor 71 contains a higher concentration (71% vs 41%) and uses Ammonium salt. This makes it absorb faster (rainfast in 2-4 hours), handle hard water better, and reduces the weight you need to carry.
2. Can I use this on any crop?
No. Vigor 71 is non-selective, meaning it kills any green plant it touches. It is approved only for Tea plantations (applied between rows) and Non-Crop areas. Do not spray on standing crops like paddy or cotton.
3. How long does it take to see results?
It is a "slow kill" herbicide. Weed growth stops immediately (Day 1-2), yellowing appears in 5-7 days, and complete death occurs in 14-21 days.
4. Is it safe for fish?
No. The surfactant used in the formulation is toxic to aquatic life. Do not use near water bodies, ponds, or rivers.
5. Does it have residual soil activity?
No. Vigor 71 binds tightly to soil particles and becomes inactive immediately upon contact with soil. It does not prevent new seeds from germinating later.
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. Vigor 71 is recommended for use by Pest Control Operators (PCOs) or authorized personnel in accordance with government regulations.
