Benpret
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Benpret Herbicide (HPM) - Complete Weed Control for Rice
The "Ready Mix" Granular Solution for Grasses, Sedges, and Broadleaf Weeds.
Benpret is a specialized pre-emergence herbicide manufactured by HPM Chemicals & Fertilizers Ltd. Designed specifically for transplanted paddy (rice), it combines two powerful active ingredients: Pretilachlor (6.0%) and Bensulfuron Methyl (0.6%). This granular formula offers a "broad-spectrum" shield, protecting your crop during the critical first month of growth.
Best For: Farmers looking to reduce manual weeding labor by over 90% and secure their yield early in the season.
Why Choose This Product? Key Benefits
- ⏱️Perfect Timing: Apply between 0 to 5 days after transplanting to kill weeds before they emerge.
- ?️Dual Action Power: Combines two chemistries to tackle resistant grasses, tough sedges, and broadleaf weeds simultaneously.
- ⏳Long-Lasting Protection: Provides a weed-free window of approximately 30 to 40 days, allowing rice seedlings to establish without competition.
- ?️Easy Application: Comes in Granule (GR) form. No spraying required—simply broadcast directly into standing water.
- ?Crop Safety: Highly selective to rice. It kills the weeds but leaves your paddy crop healthy and green.
Technical Specifications
| Parameter | Details |
|---|---|
| Brand Name | Benpret (HPM) |
| Technical Name | Pretilachlor 6.0% + Bensulfuron Methyl 0.6% GR |
| Mode of Action | Inhibition of VLCFA and ALS enzymes (Double Action) |
| Chemical Group | Chloroacetamide + Sulfonylurea |
| Formulation | Granules (GR) |
| Toxicity Label | Blue Triangle (Slightly Hazardous) |
How It Works: Mode of Action
Benpret uses a synergistic approach to attack weeds through two different biological pathways:
- Stops Cell Division (Pretilachlor): This component inhibits the synthesis of Very Long Chain Fatty Acids (VLCFA). It effectively stops cell division in emerging grass shoots, preventing them from growing.
- Halts Protein Production (Bensulfuron Methyl): This systemic component inhibits the ALS enzyme, starving the weed of essential amino acids. This is highly effective against sedges and broadleaf weeds.
- Systemic Control: The granules dissolve in water, forming a chemical barrier. Weeds absorb the poison through their roots and shoots as they try to emerge, leading to rapid death.
Note: This combination covers the biological gaps of single-molecule herbicides.
Target Crops & Pests
| Crop | Target Pest(s) |
|---|---|
| Rice (Transplanted Paddy) | Grasses: Barnyard Grass (Echinochloa crus-galli), Jungle Rice (Echinochloa colona), Sprangletop. |
| Rice (Transplanted Paddy) | Sedges: Rice Flat Sedge (Cyperus iria), Umbrella Sedge (Cyperus difformis), Purple Nutsedge. |
| Rice (Transplanted Paddy) | Broadleaf Weeds: False Daisy (Eclipta alba), Water Primrose (Ludwigia parviflora), Water Clover. |
Dosage & Application Guide
The Golden Rule: Always follow the "Dose per Acre" for accurate results. Benpret is usually sold in 4 kg packs, which is the exact dose for 1 acre.
Dosage per Acre, Litre, & Pre-Harvest Interval (PHI)
| Crop | Dose (kg / Acre) | Water (L / Acre) | Application Method | PHI (Days) |
|---|---|---|---|---|
| Rice / Paddy | 4 kg | Standing Water (2-3 inches) | Broadcast / Spreading | 88 Days |
*PHI = Pre-Harvest Interval: The minimum number of days to wait between the last spray and harvesting.
How to Apply: Best Practices
[Image of farmer broadcasting granular herbicide in paddy field]- Timing: Apply strictly between 0 to 5 days after transplanting. Effectiveness drops if weeds have already grown 2-3 leaves.
- Mixing: Mix the 4 kg of granules with 10-15 kg of dry sand per acre for uniform distribution across the field.
- Coverage: Ensure the field has 2 to 3 inches (5-7 cm) of standing water. Retain this water for 2-3 days post-application to allow the granules to dissolve and coat the soil.
- Safety: Always wear PPE (gloves, mask, goggles). Wash hands thoroughly after use. Do not use in fields where fish culture is practiced.
Frequently Asked Questions
1. Is Benpret safe for fish in the paddy field?
No. Benpret contains Pretilachlor, which is toxic to fish. Do not use this product if you are practicing pisciculture (fish farming) in your rice fields.
2. Can I apply Benpret if the weeds have already emerged?
It is less effective on grown weeds. Benpret is a "Pre-emergence" herbicide designed to kill weeds as they sprout. For best results, apply within 5 days of transplanting.
3. How much money does Benpret save compared to manual weeding?
Manual weeding can cost between ₹6,000-₹8,000 per hectare. Benpret costs significantly less, potentially reducing weed control expenses by over 90%.
4. Is Benpret related to "Benpres" or "Benidipine"?
No. Benpret is an agricultural herbicide. Benpres is a Philippines-based conglomerate, and Benidipine is a heart medication. Do not confuse them.
5. What is the Waiting Period for this product?
The Pre-Harvest Interval (PHI) is 88 days. This ensures that by harvest time, the crop is free of chemical residues.
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. Benpret is toxic to aquatic organisms; prevent run-off into water bodies.
