Hunter GR - Butachlor 5% GR - HPM
Item description
HPM Hunter GR Butachlor 5% Granular Paddy Herbicide
Selective pre-emergence weed control for transplanted paddy
HPM Hunter GR contains Butachlor 5% GR. It is a granular, selective pre-emergence herbicide registered for one broadcast application in transplanted paddy within four days after transplanting. It is intended for the grasses, sedges, and broadleaf weeds listed on the current Indian label.
Hunter GR is a herbicide—not an insecticide. This 5% granular formulation is also different from HPM Hunter 50% EC liquid, so their dose, equipment, and handling instructions must never be interchanged.
Why Choose HPM Hunter GR?
- 🌾 Transplanted-paddy use: The verified label specifies transplanted paddy and application within four days after transplanting.
- 🛡️ Pre-emergence action: Butachlor acts while listed weeds are germinating, before they establish in the field.
- 🧺 Granular application: The product is broadcast without water dilution using suitable granule-application equipment or by hand while wearing rubber gloves.
- 🌿 Label-listed weed spectrum: The registration covers specified grasses, sedges, and broadleaf weeds in transplanted paddy.
- 📋 Clear use limits: The official directions specify one application, a 24-hour re-entry period, and a 90–120 day pre-harvest interval.
Technical Specifications
| Parameter | Details |
|---|---|
| Brand | HPM Hunter GR |
| Active ingredient | Butachlor 5% w/w |
| Formulation | GR (granules) |
| Product type | Selective pre-emergence herbicide |
| HRAC/WSSA group | Group 15 (legacy K3) |
| Chemical family | Alpha-chloroacetamide |
| Available pack sizes | 5 kg and 20 kg |
How Butachlor Works
Butachlor is absorbed mainly by germinating weed shoots and secondarily by roots. It is classified in HRAC/WSSA Group 15, which inhibits very-long-chain fatty-acid synthesis. This disrupts early seedling growth so susceptible label-listed weeds fail to establish. Apply only during the verified pre-emergence window; it is not a substitute for a post-emergence treatment.
Registered Crop and Weeds
| Crop | Label-listed weeds |
|---|---|
| Transplanted paddy | Echinochloa crus-galli, Echinochloa colona, Eleusine indica, Fimbristylis miliacea, Cyperus iria, Cyperus difformis, Eclipta alba, Ludwigia parviflora, and Sphenoclea zeylanica |
Official Dose and Application Guide
| Crop and timing | Product dose | Water | Frequency | PHI |
|---|---|---|---|---|
| Transplanted paddy, pre-emergence within four days after transplanting | 25–40 kg/ha | Not applicable | One application | 90–120 days |
Re-entry period: 24 hours. Use the hectare-based label dose; do not substitute a liquid-product dose or create an unverified water-dilution rate.
How to Apply
- Timing: Broadcast once within four days after transplanting, before the listed weeds emerge.
- Equipment: Use a hand-operated granule applicator, mechanical dispenser, or broadcast by hand while wearing rubber gloves.
- Uniformity: Distribute the granules evenly over the intended field area and avoid overlapping applications.
- Conditions: Do not apply during unfavourable weather, and follow all soil, water, and field instructions printed on the supplied label.
- Restrictions: Do not use on crops, timings, or weeds not specified on the current label.
Frequently Asked Questions
1. Is Hunter GR an insecticide?
No. It is a Butachlor 5% GR herbicide for label-listed weeds in transplanted paddy.
2. Is Hunter GR the same as Hunter 50% EC?
No. They have different concentrations and formulations. Never transfer the dose or application method from one product to the other.
3. Should Hunter GR be mixed with water?
No water dilution is listed. It is a granular product applied by broadcasting with suitable equipment or by hand while wearing rubber gloves.
4. Can it be used in direct-seeded rice?
The verified label scope used here is transplanted paddy. Do not extend it to another rice system unless the supplied current label explicitly permits that use.
5. Can the application be repeated?
The verified label specifies one application. Do not repeat automatically.
Safety and Disclaimer
Always read and follow the current official label supplied with the pack. Wear the prescribed personal protective equipment, including rubber gloves for hand application. Keep the product in its original container away from children, animals, food, feed, seed, and water. The product label is the controlling instruction.
Quick Facts
Watering
Twice a week
Sunlight
Indirect light
Humidity
High 60-80%
Temperature
18-27°C