Symatic -Halosulfuron Methyl 75% Wdg
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Symatic Herbicide (Halosulfuron Methyl 75% WDG) by Coromandel
The expert solution for controlling stubborn Purple Nutsedge (Motha) in Sugarcane, Maize, and Bottle Gourd.
Symatic is a specialized systemic herbicide developed by Coromandel International Ltd. Unlike common weed killers that only burn the leaves, Symatic penetrates deep into the plant system to kill the underground tubers (nuts) of sedges. This ensures the weed does not grow back, protecting your crop's yield and quality.
Important Note: This guide refers to Symatic Halosulfuron Methyl 75% WDG. Please verify the technical name on your packet, as a different product (Pinoxaden) also exists under a similar brand for wheat.
Why Choose This Product? Key Benefits
- ⏱️Systemic Control: It moves through the plant to kill the "nuts" (tubers) underground, preventing regrowth.
- ?️Excellent Crop Safety: Specially formulated to be safe for Maize, Sugarcane, and Bottle Gourd when used as directed.
- ⏳Long-Lasting Results: Provides residual control, keeping your field weed-free for a longer duration compared to manual weeding.
- ?️Rainfastness: Ideally requires 4 hours of rain-free weather after spraying to become fully effective.
- ?Low Dose Technology: Requires only 36 grams per acre, reducing chemical load on the environment and storage hassles.
Technical Specifications
| Parameter | Details |
|---|---|
| Brand Name | Symatic |
| Technical Name | Halosulfuron Methyl 75% WDG |
| IRAC MoA Code | Group 2 (ALS Inhibitor) |
| Chemical Group | Sulfonylurea |
| Formulation | Water Dispersible Granule (WDG) |
| Toxicity Label | Blue/Yellow (Caution/Harmful) |
How It Works: Mode of Action
Symatic works by starving the weed of essential proteins needed for growth.
- Absorption: Upon spraying, the active ingredient is absorbed through the leaves of the nutsedge.
- Translocation: It travels down the plant's vascular system (phloem) directly to the underground tubers.
- Termination: It inhibits the ALS enzyme, stopping the production of amino acids. The weed stops growing in 1-2 days, turns yellow in 7 days, and completely dies within 14-21 days.
Note: Visible yellowing takes about a week. Do not panic if weeds stay green initially; they have stopped growing.
Target Crops & Pests
| Crop | Target Pest(s) |
|---|---|
| Sugarcane | Cyperus rotundus (Purple Nutsedge/Motha) |
| Maize (Corn) | Cyperus rotundus, Cyperus iria |
| Bottle Gourd | Cyperus rotundus (Purple Nutsedge) |
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 (ml / Acre) | Water (L / Acre) | Dose (ml / Litre) | PHI (Days) |
|---|---|---|---|---|
| Sugarcane | 36 g | 150 - 200 | ~0.2 g | Refer Leaflet |
| Maize | 36 g | 150 - 200 | ~0.2 g | Refer Leaflet |
| Bottle Gourd | 36 g | 150 - 200 | ~0.2 g | Refer Leaflet |
*PHI = Pre-Harvest Interval: The minimum number of days to wait between the last spray and harvesting. Note: Dosage is in Grams (g), not ml, as this is a Granule product.
How to Apply: Best Practices
- Timing: Apply when weeds are actively growing and have 3-5 leaves (usually 20-30 days after sowing/planting).
- Mixing: Dissolve the 36g pouch in a small mug of water first to make a solution, then add it to the main spray tank. Use a Flat Fan or Flood Jet nozzle for best coverage.
- Coverage: Use at least 150 liters of water per acre. Proper coverage of the weed foliage is essential for the chemical to enter the plant.
- Safety: Always wear PPE (gloves, mask, goggles). Wash hands thoroughly after use. Clean the spray tank well after use to prevent damage to sensitive follow-up crops.
Frequently Asked Questions
1. How is this different from manual weeding?
Manual weeding only removes the top leaves, so the nutsedge grows back in a few days. Symatic kills the underground tuber, providing a permanent solution for that season.
2. Can I use this on Wheat?
No. Do not use this product on wheat. There is another product called "Symatic" containing Pinoxaden for wheat. Always check the label for "Halosulfuron Methyl" before use.
3. When will I see the results?
Weeds stop growing within 24 hours. You will see yellowing in 7-10 days, and complete death of the weed occurs in about 21 days.
4. What if it rains after spraying?
The product needs about 4 hours to be fully absorbed. If it rains after 4 hours, re-spraying is generally not required.
5. Will it kill other grasses in the field?
No, this product is specific to sedges (Motha) and some broadleaf weeds. It will not control common grassy weeds.
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.
