Benpret - Bensulfuron Methyl 0.6% + Pretilachlor 6% GR - HPM
HPM Benpret is a selective pre-emergence rice herbicide containing Bensulfuron Methyl 0.6% + Pretilachlor 6% GR. It is registered for specified grasses, sedges and broadleaf weeds in transplanted rice at 10 kg/ha, applied once within the approved early window. Water dilution is not applicable; mix with adequate sand and broadcast uniformly by hand while wearing rubber gloves. Follow the current Benpret pack label and the 88-day PHI.
Item description
HPM Benpret Herbicide for Early Weed Control in Transplanted Rice
HPM Benpret is a selective, pre-emergence ready-mix herbicide containing Bensulfuron Methyl 0.6% + Pretilachlor 6% GR. Its registered use is early control of specified grasses, sedges and broadleaf weeds in transplanted rice.
Benpret combines two herbicide mode-of-action groups. Bensulfuron Methyl is an HRAC/WSSA Group 2 ALS inhibitor, while Pretilachlor is a Group 15 inhibitor of very-long-chain fatty-acid synthesis. The granular formulation is mixed with an adequate quantity of sand and broadcast uniformly; it is not a water-diluted spray.
Important use boundary: use Benpret only on transplanted rice and only for the weeds, rate, timing and safety conditions on the current pack label. The live Mana Agri Mart record offers a 4 kg pack, but the registered formulation rate is 10 kg/ha; do not change the field rate merely to fit a pack size.
Why Choose Benpret?
- Two verified modes of action: Group 2 and Group 15 activity are combined in one registered ready-mix formulation.
- Broad registered weed spectrum: the official Indian use table lists grasses, sedges and broadleaf weeds in transplanted rice.
- Early application: the label framework permits one application within 0–5 days after transplanting; HPM’s current Benpret page specifies 3–5 days after transplanting.
- Granular broadcast use: the product is mixed with adequate sand and broadcast uniformly, so a spray-water dilution is not applicable.
- Clear resistance classification: knowing the Group 2 + 15 combination helps distinguish same-mode substitutes from genuinely different-group programme options.
Technical Specifications
| Brand and trade name | HPM Benpret |
| Active ingredients | Bensulfuron Methyl 0.6% w/w + Pretilachlor 6% w/w |
| Formulation | GR (ready-mix granules) |
| Product type | Selective pre-emergence herbicide |
| HRAC/WSSA groups | Group 2 + Group 15 |
| Chemical families | Sulfonylurea + α-chloroacetamide |
| Registered crop in this guide | Transplanted rice only |
| Application method | Mix with adequate sand and broadcast uniformly by hand while wearing rubber gloves |
| Available catalogue pack | 4 kg |
How Benpret Works
- Bensulfuron Methyl — Group 2: susceptible weeds absorb the active ingredient and ALS inhibition blocks production of essential branched-chain amino acids, stopping growth.
- Pretilachlor — Group 15: inhibition of very-long-chain fatty-acid synthesis disrupts cell division and growth in susceptible germinating weeds.
- Early-field protection: application before weed emergence exposes susceptible weed seedlings to the registered ready mix during the crop-establishment window.
A product containing the same two active ingredients remains a Group 2 + 15 substitute, even if its concentration or formulation differs. It is not a different-mode resistance rotation.
Registered Crop and Target Weeds
| Crop | Weed group | Registered weeds |
|---|---|---|
| Transplanted rice | Grasses | Echinochloa crus-galli, Echinochloa colonum and Cynodon dactylon |
| Transplanted rice | Sedges | Cyperus iria, Cyperus difformis, Cyperus rotundus and Fimbristylis miliacea |
| Transplanted rice | Broadleaf and aquatic weeds | Ludwigia parviflora, Marsilea quadrifolia, Enhydra fluctuans, Sphenoclea zeylanica, Eclipta alba and Ammannia baccifera |
Do not extend this use list to direct-seeded rice or another crop. Research uses outside the current registered label are not product-page recommendations.
Dose, Timing, Re-entry and PHI
No universal grams-per-litre dose applies. The official use table lists no spray-water dilution because Benpret is a sand-mixed broadcast granule.
| Crop | Active-ingredient rate | Formulation rate | Water | Timing and frequency | Re-entry | PHI |
|---|---|---|---|---|---|---|
| Transplanted rice | 60 g Bensulfuron Methyl + 600 g Pretilachlor per hectare | 10 kg/ha | Not applicable | One application within 0–5 days after transplanting; HPM states 3–5 days. Follow the current Benpret pack. | 24 hours | 88 days |
PHI means pre-harvest interval. Do not apply after the fifth day following transplanting, and do not shorten the 88-day PHI.
Application Best Practices
- Confirm the field: use only in transplanted rice and only when the target weed spectrum matches the current label.
- Measure by hectare: use 10 kg of formulation per hectare; do not invent a water-tank or per-litre dilution.
- Mix for distribution: blend the measured granules with an adequate quantity of sand.
- Broadcast uniformly: distribute the mixture evenly by hand while wearing rubber gloves and the other PPE required by the pack.
- Respect the window: the registered label window is 0–5 days after transplanting and the HPM product page specifies 3–5 days; never apply after day 5.
- Check conditions: do not apply when weather conditions are unfavourable.
- No inferred mixtures: Benpret is already a registered ready mix. This page does not recommend combining it with another herbicide, pesticide, fertiliser or adjuvant. Recommendations shown elsewhere are standalone alternatives.
Safety and Storage
Avoid inhalation and skin contact. Wear rubber gloves and full protective clothing while handling and broadcasting. Do not eat, drink, smoke or chew during use. Wash exposed skin and contaminated clothing after work. Keep the original closed pack in a cool, dry place away from heat, open flame, food and animal feed. Keep out of reach of children.
The official label states that this formulation is toxic to fish and must not be used around aquaculture, pisciculture or water bodies. Do not contaminate ponds, lakes or streams, and dispose of the empty container exactly as the label directs. Observe the 24-hour re-entry period. If exposure is suspected, follow the pack first-aid instructions and obtain medical help. No specific antidote is listed; treatment is symptomatic and supportive under medical supervision.
Frequently Asked Questions
Which crop is Benpret registered for?
Transplanted rice only in the cited Indian use guidance.
What is the registered Benpret dose?
10 kg of formulation per hectare, applied once. Do not reduce or increase the field rate to match a pack size.
Should Benpret be diluted in spray water?
No spray-water volume is listed. Mix the granules with adequate sand and broadcast uniformly by hand while wearing rubber gloves.
When should it be applied?
The regulatory label framework permits 0–5 days after transplanting, while HPM’s Benpret page specifies 3–5 days. Follow the current Benpret pack and never apply after day 5.
Is another Bensulfuron + Pretilachlor product a different-mode rotation?
No. It remains a Group 2 + 15 substitute, even when its concentration or formulation differs. Use that product only under its own label.
Important Disclaimer
Always read and follow the current official Benpret label and local regulatory instructions. The pack label overrides this page. Use only on the labelled crop, weeds, rate, timing, application method, re-entry interval, PHI and safety conditions. Mana Agri Mart does not recommend off-label use or an unverified tank mixture.
Quick Facts
Watering
Twice a week
Sunlight
Indirect light
Humidity
High 60-80%
Temperature
18-27°C