Grometri-Metribuzin
Grometri (Metribuzin) from Coromandel International is a selective herbicide providing long-lasting control of broadleaf and grassy weeds in potato, soybean, and tomato crops, ensuring clean fields and better yield.
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Coromandel Grometri Herbicide (Metribuzin 70% WP)
The Ultimate Solution for Weed-Free Sugarcane, Potato, and Wheat Crops
Stop losing yield to aggressive weeds. Grometri by Coromandel International Limited is a powerful, broad-spectrum herbicide designed to protect your harvest. Featuring Metribuzin 70% WP, it attacks weeds through both contact and systemic action, ensuring your crops get the nutrients they deserve without competition.
Best for: Farmers seeking cost-effective control against Phalaris minor, Parthenium, and broadleaf weeds in Sugarcane, Potato, Tomato, Soybean, and Wheat.
Why Choose This Product? Key Benefits
- ⏱️Dual Action Power: Works inside the plant (systemic) and on the surface (contact) to stop weed growth immediately.
- ?️Broad Spectrum Control: Effectively eliminates both tough grasses (Monocots) and broadleaf weeds (Dicots).
- ⏳Extended Residual Protection: Stays active in the soil to prevent new weeds from germinating for weeks after application.
- ?️Rapid Absorption: High water solubility ($1.2\\\\\\\\text{ g/L}$) ensures quick uptake by weed roots and leaves.
- ?Economic Advantage: Significantly cheaper and more efficient than manual weeding labor (high ROI).
Technical Specifications
| Parameter | Details |
|---|---|
| Brand Name | Grometri |
| Technical Name | Metribuzin 70% WP |
| IRAC MoA Code | Group 5 (PSII Inhibitor) |
| Chemical Group | Triazinone |
| Formulation | Wettable Powder (WP) |
| Toxicity Label | Slightly Hazardous (Blue Triangle) |
How It Works: Mode of Action
Grometri works by starving the weed of energy. It is a selective herbicide, meaning it kills weeds but is safe for tolerant crops when used correctly.
- Absorption: The active ingredient ($C_8H_{14}N_4OS$) is absorbed through roots and leaves.
- Blockade: It moves to the chloroplasts and blocks Photosystem II, stopping the plant's ability to process sunlight.
- Elimination: Without energy, the weed stops growing, turns yellow (chlorosis), and dies.
Note: Tolerant crops like Sugarcane and Potato rapidly detoxify the chemical, remaining unharmed.
Target Crops & Pests
| Crop | Target Pest(s) |
|---|---|
| Sugarcane | Parthenium, Bindweed, Purple Nutsedge, Purslane |
| Wheat | Phalaris minor (Canary Grass), Chenopodium (Bathua), Melilotus |
| Potato & Tomato | Chenopodium, Trianthema, and various grasses |
Dosage & Application Guide
The Golden Rule: Always follow the "Dose per Acre" for accurate results. Dosage varies by soil type (Heavy soils need higher dose, light soils need lower dose).
Dosage per Acre, Litre, & Pre-Harvest Interval (PHI)
| Crop | Dose (g / Acre) | Water (L / Acre) | Dose (g / Litre) | PHI (Days) |
|---|---|---|---|---|
| Sugarcane | 300g - 500g | 300 - 400 L | ~ 1.25g | 60 |
| Potato / Tomato | 150g - 300g | 200 - 300 L | ~ 1.0g | 30 |
| Wheat | 175g - 300g | 200 - 250 L | ~ 1.0g | 40-60 |
*PHI = Pre-Harvest Interval: The minimum number of days to wait between the last spray and harvesting. Note: Doses are in grams (g) as this is a powder formulation.
How to Apply: Best Practices
- Timing: Apply mainly as Pre-emergence (0-3 days after sowing) or early Post-emergence. Ensure soil is moist.
- Mixing: Premix the powder with a small amount of water to make a thin paste (slurry) before adding it to the main tank.
- Coverage: Use Flat Fan or Flood Jet nozzles to create a uniform layer on the soil surface.
- Safety: Always wear PPE (gloves, mask, goggles). Wash hands thoroughly after use. Do not use on sandy soils to avoid crop damage.
Frequently Asked Questions
1. Can I use Grometri on Sandy Soil?
No. Metribuzin moves too quickly in sandy soil and can damage crop roots. Use only on medium to heavy soils.
2. Does it control Phalaris minor in Wheat?
Yes, it is highly effective against Phalaris minor (Little Seed Canary Grass), especially in areas with Isoproturon resistance.
3. Can I mix Grometri with other herbicides?
Yes, for resistance management, it can be rotated or tank-mixed with Pendimethalin or Clodinafop (check local labels first).
4. What is the shelf life of the product?
When stored in a cool, dry place in original packaging, the product typically has a shelf life of 2 years.
5. Why did my potato leaves turn yellow after spraying?
Some potato varieties are sensitive. Temporary yellowing can occur but the crop usually recovers. Always check variety tolerance before spraying.
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.
