Vivaya Herbicide: Broad-Spectrum Weed Control for Rice
The ultimate dual-action solution for Grasses, Sedges, and Broadleaf weeds in Paddy.
Rice farming faces a tough challenge: weeds that steal sunlight and nutrients, reducing your harvest by up to 30%. Vivaya Herbicide (by Corteva Agriscience) is a premium, post-emergence solution designed to solve this problem.
Vivaya uses advanced OD (Oil Dispersion) technology to penetrate tough weeds like Leptochloa (Chinese Sprangletop) and Barnyard grass. It is safe for your crop but deadly to weeds, making it the perfect choice for both Transplanted and Direct Seeded Rice (DSR).
Why Choose This Product? Key Benefits
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Rainfast in 1 Hour: The advanced Oil Dispersion (OD) formula sticks to leaves quickly. You don't have to worry about rain washing it away just an hour after spraying.
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Dual-Action Power: It combines two powerful active ingredients (Penoxsulam + Cyhalofop-butyl) to kill weeds through two different attack methods, preventing resistance.
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Stops Growth Instantly: Weeds stop competing with your crop immediately after application and die completely within a few days.
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Weather Proof & Tough: The oil coating melts through the waxy surface of stubborn grasses like Echinochloa, ensuring the poison reaches the roots even in difficult conditions.
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Complete Spectrum: One shot controls all major weed types: Grasses, Sedges, and Broadleaf weeds, saving you the cost of mixing multiple medicines.
Technical Specifications
| Parameter | Details |
|---|---|
| Brand Name | Vivaya (Corteva Agriscience) |
| Technical Name | Penoxsulam 1.02% + Cyhalofop-butyl 5.1% w/w |
| IRAC MoA Code | Group 2 (ALS Inhibitor) + Group 1 (ACCase Inhibitor) |
| Chemical Group | Triazolopyrimidine + Aryloxyphenoxypropionate |
| Formulation | OD (Oil Dispersion) |
| Toxicity Label | Blue/Green (Caution - Moderate Irritant) |
How It Works: Mode of Action
[Image of systemic herbicide translocation in plants]Vivaya works like a "double hammer" against weeds. It is a systemic herbicide, meaning it travels from the leaves down to the roots and up to the growing tips.
- Absorption: The Oil Dispersion (OD) formula helps the chemical cut through the waxy layer on weed leaves, ensuring fast entry into the plant system.
- Disruption: Once inside, it attacks two vital life systems. It stops the production of essential amino acids (Proteins) and fatty acids (Cell Membranes).
- Elimination: The weed stops growing immediately. Leaves turn yellow (chlorosis), then brown (necrosis), and the plant dies completely within days. Rice plants naturally break down the chemical, staying safe.
Note: This dual action makes it highly effective against weeds that have developed resistance to single-chemical sprays.
Target Crops & Pests
| Crop | Target Pest(s) |
|---|---|
| Rice (Transplanted) | Barnyard Grass, Chinese Sprangletop (Leptochloa), Sedges (Cyperus), Broadleaves. |
| Direct Seeded Rice (DSR) | All major Grasses (Echinochloa complex), Sedges, and Broadleaf weeds. |
| Rice Nurseries | Selective control of mixed weed flora. |
Dosage & Application Guide
The Golden Rule: Always follow the "Dose per Acre" for accurate results. Do not under-dose, as it may lead to poor control of tough weeds like Leptochloa.
Dosage per Acre, Litre, & Pre-Harvest Interval (PHI)
| Crop | Dose (ml / Acre) | Water (L / Acre) | Dose (ml / Litre) | PHI (Days) |
|---|---|---|---|---|
| Rice (Paddy) | 800 ml - 900 ml | 150 - 200 Litres | ~4.5 ml - 5 ml | 60 Days |
*PHI = Pre-Harvest Interval: The minimum number of days to wait between the last spray and harvesting.
How to Apply: Best Practices
- Timing: Apply 10 to 15 Days After Transplanting (DAT) or sowing. Weeds should be small (2-4 leaf stage) for the best kill.
- Mixing: Drain the water from the field before spraying to expose the weeds. Re-flood the field 24-48 hours after application to stop new weeds from growing.
- Coverage: Use a Knapsack sprayer fitted with a Flat Fan Nozzle. Do not use floodjet nozzles. Ensure the spray covers the weed leaves uniformly.
- Safety: Always wear PPE (gloves, mask, goggles). This product can cause severe eye irritation, so eye protection is mandatory. Wash hands thoroughly after use.
Frequently Asked Questions
1. Does Vivaya control Leptochloa (Chinese Sprangletop)?
Yes, Vivaya is highly effective against Leptochloa chinensis, giving up to 91% control, which is superior to many competitor herbicides like Bispyribac-sodium.
2. Is it safe for the Rice crop?
Yes, rice plants have a natural enzyme that breaks down the chemical rapidly, making it safe for the crop while killing the weeds.
3. What if it rains after spraying?
Vivaya has excellent rainfastness. It is absorbed into the plant system within 1 hour. If it rains 1 hour after spraying, you do not need to respray.
4. Can I use this in Direct Seeded Rice (DSR)?
Absolutely. Vivaya is an excellent choice for DSR fields where early weed competition is high. It serves as a strong rescue treatment if pre-emergence sprays fail.
5. What is the price of Vivaya herbicide?
It is a premium product. The price generally ranges between ₹1,200 to ₹1,500 per litre, though some dealers may offer bulk rates. Compared to the high cost of manual labor, it offers 60-70% savings.
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, especially eye protection. Do not spray near fish ponds or aquaculture bodies.
