Vigor-Ammonium Salt Of Glyphosate 71% Sg
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Vigor 71 Herbicide (Nichino): Complete Guide to Ammonium Salt of Glyphosate 71% SG
A high-power, systemic weed killer designed for total vegetation control in Tea plantations and Non-Crop areas.
Vigor 71 is a modern advancement over traditional liquid glyphosate. Manufactured by Nichino India, it uses a concentrated 71% Soluble Granule (SG) technology. It is specifically engineered to kill stubborn perennial weeds down to the roots, offering superior results even in hard water or rainy conditions compared to older 41% liquid formulations.
Best For: Tea gardens (post-pruning), railway tracks, industrial sites, and clearing wasteland.
Why Choose This Product? Key Benefits
- ⏱️Rapid Rainfastness: Absorbs quickly into the plant; safe from rain wash-off within just 2 to 4 hours (compared to 6-8 hours for liquids).
- ?️Total Root Kill: Systemic action penetrates deep into underground rhizomes and tubers, ensuring weeds like "Motha" and "Doob" do not regrow.
- ⏳Hard Water Stable: Contains built-in Ammonium Sulphate to neutralize hard water, ensuring the medicine works at full strength without extra additives.
- ?️High Concentration: The 71% concentration means you carry less weight but get more power. 1 kg of Vigor 71 covers the same area as 2 liters of liquid glyphosate.
- ?Eco-Smart Packaging: Comes in granules/sachets, significantly reducing plastic waste compared to bulky plastic bottles.
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 derivative) |
| Formulation | SG (Soluble Granule) / WSG |
| Toxicity Label | Blue Triangle (Moderately Toxic) |
How It Works: Mode of Action
Vigor 71 is a non-selective, systemic herbicide. It does not burn the plant immediately; instead, it slowly shuts down the plant's life support system.
- Absorption: The Ammonium salt formulation allows the herbicide to be absorbed rapidly through green leaves and stems.
- Translocation (Movement): Once inside, it travels through the plant's vascular system (phloem) down to the roots, rhizomes, and tubers (the "food storage" of the weed).
- Inhibition: It blocks the EPSPS enzyme, which is essential for making proteins. Without these proteins, the plant starves and dies completely from the root up.
Note: This is a slow process. Yellowing starts in 5-7 days, and complete death occurs in 14-21 days.
Target Crops & Pests
| Crop / Area | Target Pest(s) |
|---|---|
| Tea Plantations | Imperata cylindrica (Thatch Grass), Polygonum perfoliatum, Commelina benghalensis, Mixed broadleaf weeds. |
| Non-Crop Areas | Parthenium hysterophorus (Carrot Grass), Cynodon dactylon (Bermuda Grass), Cyperus rotundus (Motha). |
| Industrial / Rail | General vegetation, woody shrubs, and deep-rooted perennials. |
Dosage & Application Guide
The Golden Rule: Always follow the "Dose per Acre" for accurate results. Do not under-dose, or weeds may recover.
Dosage per Acre, Litre, & Pre-Harvest Interval (PHI)
| Crop | Dose (g / Acre) | Water (L / Acre) | Dose (g / Litre) | PHI (Days) |
|---|---|---|---|---|
| Tea | 1200 g (1.2 kg) | 200 Litres | 6 g | Use after pruning |
| Non-Crop Areas | 1200 g (1.2 kg) | 200 Litres | 6 g | - |
| Tough Perennials | 1200 - 1400 g | 200 Litres | 6 - 7 g | - |
*PHI = Pre-Harvest Interval: The minimum number of days to wait between the last spray and harvesting. For Tea, use "Blanket Application" only when bushes are pruned/skeletonized.
How to Apply: Best Practices
- Timing: Apply when weeds are actively growing and have 4-8 leaves. Do not apply on weeds that are flowering or dry/stressed.
- Mixing: Dissolve granules in clean water. Though it has built-in conditioners, adding 1-2% Ammonium Sulphate can boost results in very hard water.
- Coverage: Use a Knapsack sprayer with a Flat Fan or Flood Jet Nozzle. Do not use Hollow Cone nozzles (mist) to avoid drift onto crops.
- Safety: Always wear PPE (gloves, mask, goggles). Vigor 71 is a severe eye irritant—protect your eyes. Wash hands thoroughly after use.
Frequently Asked Questions
1. What is the difference between Vigor 71 and standard Glyphosate 41%?
Vigor 71 is a dry granule (SG) with 71% concentration, making it much stronger per gram than the 41% liquid. It uses Ammonium Salt, which absorbs faster and kills roots better than the old IPA salt liquid.
2. Is Vigor 71 safe for fish or paddy fields?
No. It contains a surfactant (POEA) that is toxic to aquatic life. Do not use it in standing water, rice paddies, or near ponds.
3. How long does it take to see results?
It is a slow killer. Growth stops immediately, yellowing starts in 5-7 days, and complete "brown-out" happens in 14-21 days. Be patient.
4. Can I use it on HT Cotton?
Government regulations restrict the use of Glyphosate to approved crops (like Tea) and Non-Crop areas. Always check local laws regarding use on field crops.
5. What happens if it rains after spraying?
Vigor 71 is rainfast in 2 to 4 hours. If it rains after this window, the medicine has likely already entered the plant and will still work.
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 a severe eye irritant; wear goggles.