Omni Star (Bispyribac Sodium 10%SC) 200 ml
Omni Star | 200 ml
Bispyribac sodium 10% w/v SC. Systemic post-emergence rice herbicide for labelled grasses, sedges and broadleaf weeds. Match the rice establishment, timing and complete pack directions before treatment.
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Item description
Omni Star Rice Herbicide by AgroStar | 200 ml
Omni Star is a systemic, post-emergence rice herbicide containing bispyribac sodium 10% w/v SC. Use it with the establishment-specific timing, water management and current pack directions. This listing is the 200 ml pack.
What it controls: Labelled grasses, sedges and broadleaf weeds in rice. The detailed species list below is paired with the nursery recommendation.
When to use it: Nursery, direct-seeded and transplanted rice have different treatment windows; do not substitute one for another.
Before spraying: Keep product quantity, water, crop establishment, timing and harvest directions together. Bottle size is not a tank or acre dose.
Why Choose This Product? Key Benefits
- 🌾 Rice-use herbicide: Designed for post-emergence weed control in rice; crop selectivity depends on following the label.
- 🎯 Three weed groups: The leaflet covers grasses, sedges and broadleaf weeds, with named species in its nursery recommendation.
- 🌿 Systemic action: Bispyribac sodium inhibits ALS, an enzyme needed for the production of essential branched-chain amino acids.
Technical Specifications
| Parameter | Details |
|---|---|
| Brand Name | Omni Star by AgroStar |
| Technical Name | Bispyribac sodium 10% w/v SC |
| Active Ingredients | Bispyribac sodium 10% w/v |
| HRAC Classification | HRAC Group 2: ALS inhibitors |
| Chemical Group | Pyrimidinylbenzoates |
| Formulation | SC (suspension concentrate) |
| Manufacturer / Marketer | Ulink Agritech Private Limited is named in the linked leaflet and safety data sheet. AgroStar also lists a separate Advance Agro Life registration; check the supplied pack for its batch manufacturer. |
| Registration Number | AgroStar lists manufacturer-dependent registrations: Advance Agro Life, CIR-172850/2020-Bispyribac sodium (SC) (415)-118; Ulink Agritech, CIR-217836/2022-Bispyribac sodium (SC)(442)-384. Match the supplied pack; these catalogue references do not authenticate an individual batch. |
| This Pack | 200 ml |
How It Works: Mode of Action
Bispyribac sodium is an HRAC Group 2 acetolactate synthase (ALS) inhibitor. It is a herbicide for weeds, not an insecticide or fungicide.
- Post-emergence use: Apply in the correct rice-establishment window to emerged weeds as directed; it is not a universal pre-emergence programme.
- Systemic activity: The active ingredient acts within susceptible weeds. Uniform coverage and correct field-water management still matter.
- ALS inhibition: Blocking ALS disrupts the production of essential branched-chain amino acids needed for weed growth.
Plan resistance management with a qualified crop adviser using HRAC groups, not brand names alone. Another Group 2 herbicide does not provide a different target-site mode of action.
Target Crops & Weeds
Use only the specified rice-establishment and weed combinations. Do not treat the separate lists as interchangeable.
| Crop / Establishment | Target Weed(s) |
|---|---|
| Rice nursery |
|
| Direct-seeded / transplanted rice |
|
Dosage & Application Guide
The nursery programme below retains the leaflet’s hectare quantities and its qualified harvest wording. For direct-seeded or transplanted rice, use the separate requirements below and confirm the complete supplied-pack programme before mixing.
Nursery Dose per Acre & Label Harvest Guidance
| Rice Establishment | Product / Acre | Water / Acre | Original Label Basis | First Application & Harvest Guidance |
|---|---|---|---|---|
| Rice nursery | Approx. 80.9 ml | Approx. 121.4 L | 200 ml product + 300 L water per hectare | 10–12 days after sowing. The leaflet notes that spray-to-harvest has exceeded 78 days; it does not state a fixed 78-day PHI. Follow the supplied pack’s harvest directions and never treat this as a zero-day interval. |
Nursery weed stage: The nursery/transplanted timing paragraph also describes most weeds having emerged at the 3–4-leaf stage, subject to soil and climate. Match the day window and weed stage to the supplied directions.
Direct-seeded rice requirements: The leaflet gives a first-treatment window of 15–25 days after sowing. Confirm the complete crop/weed, product, water and harvest directions on the supplied pack before preparing a mixture; no direct-seeded numeric recipe is given here.
Transplanted rice requirements: The leaflet gives 10–14 days after planting, when most weeds have emerged at the 3–4-leaf stage, depending on soil and climate. Confirm the complete crop/weed, product, water and harvest directions before mixing; no transplanted numeric recipe is given here.
Acre conversion and further treatment: Acre equivalents are approximate, calculated from the original hectare quantities using 0.40468564224. No per-litre or per-tank rate is implied. Follow current pack instructions for any further treatment; these first-treatment windows are not repeat intervals.
How to Apply: Best Practices
- Choose the establishment window: Match nursery, direct-seeded or transplanted rice to its own first-treatment window. Do not substitute a weed-stage statement for the day window.
- Manage field water: Drain the field before application. The leaflet directs reflooding within one day after application and maintaining field water for at least ten days after application.
- Prepare the spray: Shake the bottle. Mix the measured product with a small amount of water, then add the remaining required water with thorough agitation. Do not mix with bare hands.
- Use suitable equipment: Use a high-volume knapsack sprayer with a flat-fan or flood-jet nozzle. Calibrate for uniform weed coverage and avoid drift onto other crops.
- Do not add insecticides or fungicides: AgroStar directs that Omni Star should not be mixed with any fungicide or insecticide. Do not assume that another herbicide, fertiliser or adjuvant is permitted.
- Respect harvest and entry directions: Do not interpret the leaflet’s harvest note as a fixed 78-day or zero-day PHI. Follow the supplied pack’s harvest and separate worker-entry restrictions; keep unprotected people out of the treated area.
Frequently Asked Questions
1. When should I apply Omni Star in each rice establishment?
The leaflet gives nursery rice 10–12 days after sowing, direct-seeded rice 15–25 days after sowing, and transplanted rice 10–14 days after planting. The nursery/transplanted paragraph also describes emerged weeds at the 3–4-leaf stage. Match the supplied pack and all programme requirements; these are first-treatment timings, not repeat intervals.
2. Should I drain and reflood the field?
Yes. The Omni Star leaflet directs draining before application, reflooding within one day after treatment and maintaining field water for at least ten days afterward. Do not substitute another brand’s water-management schedule.
3. Is this 200 ml bottle one acre or one tank?
No. The pack volume is the sale quantity. Measure the required product using the complete applicable crop programme and actual area. No universal per-tank or per-litre dose is supplied here.
4. Can I mix Omni Star with an insecticide or fungicide?
No. AgroStar directs not to mix it with any insecticide or fungicide. Other partners also need specific label permission; do not assume that a fertiliser, herbicide or adjuvant is suitable.
5. Does the leaflet give a fixed 78-day harvest interval?
No. Its nursery-row harvest note says the interval from spray to harvest has exceeded 78 days rather than prescribing a fixed PHI. Follow the supplied label’s harvest directions. Do not convert the note or a blank cell into zero days, and keep worker-entry restrictions separate.
Safety & Disclaimer
Before you use it: Read the current supplied pack label and leaflet. Match the rice establishment, weeds, formulation, product quantity, water, method, first-treatment timing, soil conditions, entry and harvest restrictions. Use only as directed for agriculture. This overview does not replace the label or authenticate an individual pack.
Avoid contact with eyes and skin and do not inhale spray mist. Wear the label-specified protective clothing, suitable chemical-resistant gloves, boots and eye or face protection; use respiratory protection where required. Do not eat, drink, smoke or chew while mixing or spraying. Wash exposed skin and contaminated clothing after work. Keep children, animals and unprotected people away and follow the supplied pack’s worker-entry restrictions.
The safety data sheet warns of aquatic hazards. Prevent product, spray drift, runoff, spills and equipment washings from contaminating drains, ponds, streams or other water sources. Manage field water without discharging contaminated water into sensitive areas.
Store tightly closed in the original container in a cool, dry, ventilated, locked place, away from food, feed and their containers. Do not reuse empty packs. Follow the supplied label and authorised local disposal requirements without contaminating soil or water.
If exposure or illness occurs, stop work and seek urgent medical or poison-centre advice with the container, label or safety data sheet. Remove contaminated clothing and wash affected skin with soap and water; rinse exposed eyes carefully with clean water. Do not induce vomiting, give anything by mouth to an unconscious person or attempt an antidote treatment yourself.
Product guidance: AgroStar product information · Product leaflet · Safety data sheet · HRAC classification.