Bispyribac-Sodium 50 g/L + Cyhalofop-Butyl 150 g/L OD

Product Attribute	Specification
Product Name	Bispyribac-Sodium 50 g/L + Cyhalofop-Butyl 150 g/L OD
Bispyribac-Sodium Content	50 g/L
Cyhalofop-Butyl Content	150 g/L
Total Active Content	200 g/L
Formulation	OD — Oil Dispersion
Product Type	Selective post-emergence rice herbicide
Bispyribac-Sodium HRAC Group	Group 2
Cyhalofop-Butyl HRAC Group	Group 1
Main Mode of Action	ALS inhibition + ACCase inhibition
Primary Weed Direction	Barnyardgrass, Leptochloa and grass-led mixed weed populations
Additional Weed Direction	Approved sedges and broadleaf weeds
Main Crop	Rice
Application Timing	Post-emergence
Main Use Systems	Direct-seeded and transplanted rice where registered
Standard MOQ	Normally 1,000 L
Available Documents	COA, SDS, TDS, product specification and available registration-supporting information
Supply Type	Bulk B2B supply for registration, import and distribution

Final weeds, crop stages, application rates, water-management requirements, tank-mix restrictions and seasonal limits must follow the approved destination-market label.

What Is Bispyribac-Sodium + Cyhalofop-Butyl OD?

This product combines two post-emergence herbicides with different biochemical targets.

It is mainly designed for rice fields where annual grasses dominate but sedges or broadleaf weeds are also present.

Typical use situations may include:

• Barnyardgrass-dominant fields
• Barnyardgrass mixed with sedges
• Leptochloa mixed with broadleaf weeds
• Echinochloa plus Monochoria
• Annual grasses mixed with Cyperus species
• Other registered grass-led mixed weed populations

The formulation should not be described as a non-selective herbicide or a universal product for every rice weed.

Its strongest positioning is post-emergence grass-led mixed weed management.

Why Combine Bispyribac-Sodium and Cyhalofop-Butyl?

The two active ingredients perform different jobs within the same rice weed-control program.

Cyhalofop-Butyl — Grass Weed Backbone

Cyhalofop-Butyl is a Group 1 ACCase inhibitor.

Its primary role is the control of susceptible annual grass weeds.

Important directions may include:

• Barnyardgrass
• Echinochloa species
• Leptochloa / sprangletop
• Jungle rice
• Other approved annual grasses

It is not primarily a broadleaf or sedge herbicide.

Bispyribac-Sodium — Mixed Weed Spectrum Support

Bispyribac-Sodium is a Group 2 ALS inhibitor.

It can contribute activity against a wider range of susceptible rice weeds, including:

• Additional grass weeds
• Selected sedges
• Monochoria and other approved broadleaf weeds
• Other registered aquatic weeds

Its main value in the mixture is to broaden the weed spectrum beyond a grass-only Cyhalofop program.

Complementary Group 1 + Group 2 Activity

The combination therefore provides:

Group 1 ACCase activity for grass control plus Group 2 ALS activity for additional grasses, sedges and broadleaf weeds.

This should be described as complementary activity.

Do not claim automatic synergy unless the exact 50 + 150 g/L OD formulation has supporting combination data.

How Does the Combination Work?

Cyhalofop-Butyl — ACCase Inhibition

Cyhalofop-Butyl belongs to HRAC Group 1.

It inhibits acetyl-CoA carboxylase, or ACCase, in susceptible grass weeds.

ACCase is essential for fatty acid synthesis and the formation of new cell membranes.

After foliar uptake, susceptible grass weeds may show:

• Growth cessation
• Inhibition of new leaf development
• Chlorosis
• Discoloration of growing points
• Tissue deterioration
• Eventual plant death

Visible weed death is not always immediate.

The first sign may be that new growth stops before older foliage becomes discolored.

Bispyribac-Sodium — ALS Inhibition

Bispyribac-Sodium belongs to HRAC Group 2.

It inhibits acetolactate synthase, also known as acetohydroxyacid synthase.

This enzyme is required for the production of branched-chain amino acids.

After treatment, susceptible weeds may experience:

• Rapid growth inhibition
• Reduced new-leaf development
• Chlorosis
• Stunting
• Progressive tissue decline

Bispyribac-Sodium can contribute to both grass and non-grass weed control depending on the species and registration.

Main Weed Directions

The following table describes typical positioning rather than a universal weed-control label.

Weed Direction	Main Contribution	Product Positioning
Barnyardgrass	Cyhalofop-Butyl + Bispyribac contribution	Core weed direction
Leptochloa / Sprangletop	Primarily Cyhalofop-Butyl	Important grass direction
Other Annual Grasses	Both active ingredients depending on species	Post-emergence control
Sedges	Primarily Bispyribac-Sodium	Registration-dependent
Monochoria and Broadleaf Weeds	Primarily Bispyribac-Sodium	Mixed-weed spectrum support
Grass-Led Mixed Populations	Complementary Group 1 + Group 2 activity	Main commercial positioning

Exact control claims depend on weed species, growth stage, resistance status and local registration.

Barnyardgrass and Leptochloa Control

Barnyardgrass and Leptochloa are two of the most commercially important directions for this combination.

Barnyardgrass

Barnyardgrass is a major competitor in both direct-seeded and transplanted rice.

The best treatment window is generally when susceptible plants are:

• Fully emerged
• Small
• Actively growing
• Within the registered leaf stage
• Not severely tillered
• Not under extreme stress

Cyhalofop-Butyl provides the main grass-control activity, while Bispyribac-Sodium may add complementary activity against susceptible populations and mixed accompanying weeds.

Leptochloa

Leptochloa species can become difficult to manage when treatment is delayed.

Cyhalofop-Butyl is particularly relevant to this grass direction.

Application should target plants while:

• Leaf area is exposed
• Tillering remains limited
• Growth is active
• Spray interception is good

Do not claim reliable rescue control of large, mature Leptochloa without exact local efficacy data.

Mixed Weed Pressure

This combination becomes more useful than a grass-only herbicide when a field contains:

barnyardgrass or Leptochloa together with registered sedges or broadleaf weeds.

Importers can therefore position this formulation between a single-active grass herbicide and a more complex multi-active rice herbicide.

Direct-Seeded Rice

Direct-seeded rice often experiences early and diverse weed pressure because crop and weeds establish at similar times.

Potential target populations may include:

• Barnyardgrass
• Leptochloa
• Annual grasses
• Sedges
• Aquatic broadleaf weeds

Application Considerations

Before treatment, confirm:

• Rice growth stage
• Weed species
• Weed growth stage
• Water regime
• Crop stress
• Previous herbicide use

Direct-seeded rice may be more sensitive at certain early establishment stages.

Do not transfer transplanted-rice instructions automatically to direct-seeded systems.

Transplanted Rice

The product may also be positioned in transplanted rice where registered.

Important factors include:

• Time since transplanting
• Root establishment
• Rice growth stage
• Weed emergence
• Field water
• Temperature
• Crop stress

Avoid application to recently transplanted or severely stressed rice unless the local label specifically permits it.

When Should the Product Be Applied?

The product should be positioned as a post-emergence herbicide.

Preferred Timing

Apply after target weeds have emerged and while they remain within the registered susceptible growth stage.

Early treatment generally provides:

• Better spray exposure
• Smaller weed biomass
• Less tillering
• More uniform control
• Lower crop competition

Avoid Delayed Treatment

Performance may become less reliable when:

• Barnyardgrass is heavily tillered
• Leptochloa is large
• Sedges are mature
• Broadleaf weeds form dense canopies
• Resistant populations are present
• Rice canopy blocks spray coverage

Not a Pre-Emergence Herbicide

Do not position this formulation as a soil-residual product applied before weeds germinate.

It is designed mainly for weeds that have already emerged.

Water Management

Water management should follow the specific rice system and local registration.

There is no single water-depth schedule suitable for every market.

Before Application

Confirm whether the local label requires:

• Drained conditions
• Shallow water
• Exposed weed foliage
• Moist soil
• A specific rice irrigation stage

The objective is to deliver enough product to the target weeds without creating unacceptable crop stress.

After Application

Follow the registered instructions for:

• Re-flooding
• Holding water
• Drainage
• Irrigation
• Treated-water movement

Avoid allowing treated paddy water to enter sensitive crops or waterways where prohibited.

OD Formulation Features

OD means Oil Dispersion.

The active ingredients are finely dispersed in an oil-based continuous phase.

This formulation platform is suitable for delivering two herbicides with different physicochemical properties in one liquid product.

Main OD Features

A well-developed OD formulation may provide:

• Convenient liquid dosing
• Good leaf wetting
• Stable active ingredient dispersion
• Controlled particle size
• Consistent spray preparation
• Flexible commercial packaging
• Good handling in professional rice programs

The OD formulation should not automatically be described as more effective than EC, SC or other formulations without comparative data.

Key OD Quality Parameters

Quality Parameter	Buyer Relevance
Bispyribac-Sodium Assay	Confirms the declared 50 g/L content
Cyhalofop-Butyl Assay	Confirms the declared 150 g/L content
Active Ratio Uniformity	Maintains the intended 50:150 ratio
Physical Appearance	Detects separation or abnormal sediment
Suspensibility / Dispersion	Supports uniform dilution
Particle Size	Influences formulation and spray performance
Wet Sieve Residue	Helps reduce nozzle and filter blockage
Viscosity	Influences pumping and pouring
Pourability	Reduces product remaining in the package
Redispersibility	Confirms recovery after storage
Persistent Foam	Supports tank preparation
Dilution Stability	Evaluates behavior in spray water
Low-Temperature Stability	Supports cold-region shipping
Heat Stability	Supports warm-climate storage
Packaging Compatibility	Confirms compatibility with oil phase and seals
Fill-Volume Accuracy	Supports batch consistency

For B2B buyers, active-ratio uniformity and storage redispersibility are especially important in a two-active OD formulation.

Application Guidance

1. Identify the Weed Complex

Confirm whether the field is dominated by:

• Grasses
• Sedges
• Broadleaf weeds
• Mixed populations

This product is best positioned when grass weeds remain an important part of the problem.

2. Confirm Weed Stage

Treat weeds while they remain within the registered susceptible stage.

Do not rely on increased dose to compensate for very large weeds.

3. Check Rice Condition

Avoid treatment when rice is severely stressed by:

• Drought
• Excessive flooding
• Nutrient deficiency
• Extreme temperature
• Disease
• Insect damage
• Previous herbicide injury

4. Prepare the Spray Tank

Where permitted:

1. Fill the tank partly with clean water.
2. Start agitation.
3. Shake or circulate the OD container as required.
4. Add the measured product.
5. Add only approved tank-mix partners.
6. Complete filling with water.
7. Maintain adequate agitation during application.

5. Achieve Uniform Coverage

Check:

• Nozzle condition
• Boom height
• Spray pressure
• Travel speed
• Field overlap
• Weed exposure

6. Follow the Registered Rate

Do not publish one universal rate.

The correct product volume depends on:

• Weed species
• Weed stage
• Rice system
• Resistance status
• Local registration

7. Follow Water-Management Instructions

Observe the registered drainage, holding-water or re-flooding requirements.

Rice Crop Safety

Rice selectivity depends on the active ingredients, crop stage and correct use pattern.

Potential crop injury risk may increase with:

• Excessive rate
• Spray overlap
• Very young rice
• Transplant stress
• Water stress
• Extreme temperatures
• Unapproved mixtures
• Incorrect application timing

Variety and Production-System Differences

Do not assume that every rice variety or cultivation system has identical tolerance.

For a new market, crop-safety data should match:

• Rice type
• Application method
• Product rate
• Growth stage
• Local environment

Resistance Management

This formulation combines HRAC Group 1 + Group 2 activity.

That provides two different biochemical targets, but it does not make the product resistance-proof.

Group 1 Resistance

Cyhalofop-Butyl belongs to Group 1.

Other Group 1 rice herbicides include products based on active ingredients such as:

• Metamifop
• Fenoxaprop-P-ethyl
• Other ACCase inhibitors

Switching only between Group 1 active ingredients should not be treated as a complete mode-of-action rotation.

Group 2 Resistance

Bispyribac-Sodium belongs to Group 2.

Other Group 2 rice herbicides include:

• Penoxsulam
• Bensulfuron-Methyl
• Pyrazosulfuron-Ethyl
• Other ALS inhibitors

Changing from Bispyribac-Sodium to another Group 2 product does not represent a completely new herbicide mechanism.

Important Rotation Principle

A program such as:

Bispyribac-Sodium + Cyhalofop-Butyl
followed by
Penoxsulam + Metamifop

still relies mainly on:

Group 2 + Group 1

even though the active ingredient names are different.

Recommended Resistance Practices

• Treat weeds early.
• Use the complete registered rate.
• Avoid repeated use of the same Group 1 + Group 2 pattern every season.
• Include effective pre-emergence herbicides where appropriate.
• Rotate with effective herbicides outside Groups 1 and 2.
• Prevent surviving weeds from producing seed.
• Use clean field borders and irrigation channels.
• Maintain herbicide-use records.
• Investigate unusual survivors.
• Integrate water and crop management.

Do not claim that this product controls Group 1- or Group 2-resistant weeds unless confirmed by population-specific data.

Tank Mixing and Compatibility

Do not assume this OD formulation is compatible with every rice herbicide, insecticide, fungicide or fertilizer.

Herbicide Mixtures

Tank mixtures may change:

• Weed spectrum
• Uptake
• Crop safety
• Herbicide activity
• Spray properties

Cyhalofop activity can be affected by certain herbicide combinations.

Physical compatibility alone therefore does not prove biological compatibility.

Before Mixing

Confirm:

• Local registration
• Target weed spectrum
• Partner mode of action
• Rice stage
• Weed stage
• Water quality
• Mixing order
• Crop-safety data

Compatibility Testing

For unfamiliar mixtures:

• Conduct a jar test.
• Use the intended water source.
• Follow the proposed mixing sequence.
• Observe for separation, sediment or excessive foam.
• Review biological compatibility data where available.

Use only supported tank mixtures.

Comparison with Other POMAIS Rice Herbicides

Different rice herbicides should be selected according to the dominant weed complex.

Product Direction	Best-Fit Positioning
Cyhalofop-Butyl 30% OD	Grass-dominant rice fields
Cyhalofop-Butyl + Quinclorac	Barnyardgrass-led weed programs
Bispyribac-Sodium + Cyhalofop-Butyl OD	Barnyardgrass / Leptochloa-led mixed weed pressure
Penoxsulam + Cyhalofop-Butyl OD	Broad mixed grass + sedge + broadleaf programs
Three-Active Rice Herbicides	More complex mixed-weed portfolios

For primarily grass weed pressure, buyers can compare the POMAIS Cyhalofop-Butyl 30% OD herbicide.

For a barnyardgrass-focused alternative using a different partner, see Cyhalofop-Butyl + Quinclorac.

For a broader Group 1 + Group 2 mixed-weed direction, compare the Penoxsulam + Cyhalofop-Butyl OD.

Storage and Transport

Store Bispyribac-Sodium 50 g/L + Cyhalofop-Butyl 150 g/L OD:

• In the original sealed container
• In a cool and dry warehouse
• Away from direct sunlight
• Away from excessive heat
• Away from freezing where relevant
• Away from food and animal feed
• Under conditions stated in the final SDS

Before use after extended storage, follow the approved shaking or redispersion procedure.

Before shipment, inspect:

• Bottle condition
• Seal integrity
• Product uniformity
• Label accuracy
• Batch coding
• Fill volume
• Carton strength
• Pallet stability

Packaging, Quality Control and Documentation

POMAIS supplies Bispyribac-Sodium 50 g/L + Cyhalofop-Butyl 150 g/L OD for qualified importers, distributors, registration companies and agricultural brands.

Packaging Options

Potential commercial packaging may include:

• 100 mL
• 250 mL
• 500 mL
• 1 L
• 5 L
• 10 L
• 20 L
• Larger commercial packs where suitable
• Tamper-evident closures
• Multilingual labels
• Retail cartons
• Export cartons
• Batch and expiry coding
• Shipping marks

Final package size depends on registration, order volume and formulation compatibility.

Quality-Control Focus

Commercial batch checks may include:

• Bispyribac-Sodium content
• Cyhalofop-Butyl content
• Active ingredient ratio
• Physical appearance
• Dispersion stability
• Particle size
• Wet sieve residue
• Viscosity
• Pourability
• Redispersibility
• Persistent foam
• Dilution stability
• Low-temperature stability
• Heat stability
• Packaging compatibility
• Fill-volume accuracy
• Batch consistency

Available Documents

Document support may include:

• COA — Certificate of Analysis
• SDS — Safety Data Sheet
• TDS — Technical Data Sheet
• Product Specification
• Packaging Specification
• Available Efficacy Information
• Available Crop-Safety Information
• Available Stability Information
• Available Compatibility Information
• Available Registration-Supporting Information
• Batch-Related Quality Documents
• Commercial and Shipping Documents

Frequently Asked Questions

What is Bispyribac-Sodium 50 g/L + Cyhalofop-Butyl 150 g/L OD used for?

It is a post-emergence rice herbicide designed for grass-led mixed weed populations.

Typical directions include barnyardgrass, Leptochloa and approved sedges or broadleaf weeds.

Is it a pre-emergence or post-emergence herbicide?

It is primarily a post-emergence herbicide.

Target weeds should already be emerged and within the registered susceptible growth stage.

What HRAC group is Bispyribac-Sodium?

Bispyribac-Sodium belongs to HRAC Group 2 and inhibits ALS.

What HRAC group is Cyhalofop-Butyl?

Cyhalofop-Butyl belongs to HRAC Group 1 and inhibits ACCase.

How does Cyhalofop-Butyl work?

It inhibits fatty acid synthesis in susceptible grass weeds by blocking ACCase activity.

Growth stops before the treated grass gradually declines.

How does Bispyribac-Sodium work?

It inhibits ALS and prevents the formation of essential branched-chain amino acids in susceptible weeds.

Does it control barnyardgrass?

Barnyardgrass is one of the main product directions where the formulation is registered.

Can it control Leptochloa?

Leptochloa is an important Cyhalofop-Butyl grass direction where registered.

Does it control sedges?

Bispyribac-Sodium may contribute activity against selected registered sedges.

The exact species must follow the local label.

Does it control broadleaf weeds?

It may control selected rice broadleaf weeds where registered, mainly through the Bispyribac-Sodium component.

Can it be used in direct-seeded rice?

Yes, where the exact product and application pattern are registered for direct-seeded rice.

Can it be used in transplanted rice?

It may be used where the local label includes transplanted rice.

Application timing should consider transplant establishment and crop stress.

What does OD mean?

OD means Oil Dispersion.

The active ingredients are dispersed in an oil-based liquid formulation designed for dilution before application.

Does Group 1 + Group 2 prevent herbicide resistance?

No.

The product contains two different modes of action, but repeated dependence on the same Group 1 + Group 2 combination can still select resistant weeds.

Can it control herbicide-resistant barnyardgrass?

No universal claim should be made.

Performance depends on the resistance mechanism present in the local population.

Can it be tank mixed with other rice herbicides?

Only where compatibility and crop safety have been confirmed.

Some herbicide partners may reduce Cyhalofop activity even when the mixture is physically compatible.

What is the minimum order quantity?

The standard minimum order quantity is normally 1,000 L.

Request Product Specifications

To evaluate a Bispyribac-Sodium 50 g/L + Cyhalofop-Butyl 150 g/L OD purchasing or registration project, please provide:

• Destination country
• Company type
• Required quantity
• Preferred package size
• Rice production system
• Dominant grass weeds
• Sedge and broadleaf weed pressure
• Target weed growth stage
• Current registration status
• Required label language
• Required technical documents
• Expected purchasing schedule

We will review the two-active specification, OD formulation quality, target weed profile, packaging feasibility and destination-market requirements before confirming the commercial proposal.

Bispyribac-Sodium 50 g/L + Cyhalofop-Butyl 150 g/L OD is supplied for professional rice weed management, B2B procurement, registration and wholesale distribution.