Metamifop 4% + Clomazone 4% + Propanil 30% EC

Item	Product Information
Product Name	Metamifop 4% + Clomazone 4% + Propanil 30% EC
Active Ingredients	Metamifop + Clomazone + Propanil
Active Content	4% + 4% + 30%
Formulation	EC, Emulsifiable Concentrate
Product Type	Selective Rice Herbicide
Metamifop Group	HRAC/WSSA Group 1
Clomazone Group	HRAC/WSSA Group 13
Propanil Group	HRAC/WSSA Group 5
Main Application Timing	Early post-emergence where registered
Core Weed Direction	Barnyardgrass and other annual rice grasses
Supporting Weed Direction	Selected young broadleaf weeds and sedges where registered
Main Crop	Rice
Rice Systems	Direct-seeded and transplanted rice where approved
Product Positioning	Non-ALS three-mode rice weed-management option
Supply Direction	SunAgro branded product for registration, import, and distribution
Document Support	COA, SDS/MSDS, TDS, specification, batch data, and available registration documents

Final rice systems, weed species, application rates, weed growth stages, water-management requirements, spray intervals, crop-safety restrictions, and environmental precautions must follow the approved destination-market label.

Buyers developing a broader program can review the SunAgro rice herbicide portfolio when comparing products from different HRAC groups.

Why Combine Metamifop, Clomazone, and Propanil?

The formulation combines systemic grass activity, contact weed injury, and pigment-inhibition activity within one early post-emergence rice herbicide.

Each active ingredient has a different role.

Metamifop for Systemic Grass Control

Metamifop belongs to HRAC/WSSA Group 1 and inhibits acetyl-CoA carboxylase, or ACCase. HRAC classifies it within the ACCase-inhibiting herbicides.

Its main role in this formulation is the systemic management of susceptible annual grass weeds.

After absorption through treated weed foliage, Metamifop affects fatty-acid synthesis and the normal development of growing tissues.

Its strongest commercial direction is therefore:

• Barnyardgrass
• Echinochloa species
• Selected annual rice grasses
• Other susceptible grass weeds where registered

Metamifop should not be presented as the main component for broadleaf or sedge control.

Propanil for Rapid Contact Activity

Propanil belongs to HRAC/WSSA Group 5 and acts through photosystem II inhibition. HRAC classifies Propanil among the Group 5 PSII inhibitors.

It provides an important contact component within the mixture.

Its performance depends on good exposure of young weed foliage. After effective treatment, susceptible plants develop photosynthetic disruption and visible foliar injury.

Propanil therefore adds value against exposed young weeds but should not be described as a fully systemic herbicide.

Clomazone for Group 13 Support

Clomazone belongs to HRAC/WSSA Group 13 and acts through inhibition of the deoxy-D-xylulose phosphate synthase pathway associated with pigment formation.

Susceptible tissues may develop:

• Pale coloration
• Chlorosis
• Bleaching
• Reduced new growth
• Failed seedling development

Within this three-active formulation, Clomazone adds another mode of action to registered emerging and young weed programs.

How Does the Three-Mode Herbicide Work?

The three active ingredients affect susceptible weeds through different biological processes.

Active Ingredient	HRAC Group	Main Technical Role	Typical Field Contribution
Metamifop	1	ACCase inhibition	Systemic annual grass activity
Propanil	5	Photosystem II inhibition	Contact activity on exposed young weeds
Clomazone	13	DXPS-related pigment inhibition	Bleaching and early growth disruption

Metamifop Pathway

Foliar absorption → ACCase inhibition → fatty-acid synthesis disruption → grass growth stops

Growing points become affected after sufficient exposure, and susceptible grass weeds gradually stop developing.

Propanil Pathway

Leaf contact → PSII inhibition → photosynthetic electron transport disruption → foliar injury develops

Good spray coverage is important because contact with exposed weed foliage contributes strongly to performance.

Clomazone Pathway

Active ingredient exposure → Group 13 pigment pathway disruption → chlorophyll-protective pigments decline → susceptible tissues bleach

The field response depends on weed species, growth stage, exposure, rate, water management, and local susceptibility.

The three active ingredients should not be described as guaranteeing complete control of every rice weed.

Target Rice Weed Directions

Weed Direction	Product Role	Commercial Boundary
Barnyardgrass / Echinochloa spp.	Core target direction	Main page focus
Other Annual Rice Grasses	Primary supporting direction	Species and registration dependent
Sprangletop-Type Weeds	Supporting grass direction	Confirm local efficacy and label
Young Broadleaf Weeds	Secondary direction	Mainly Propanil and Clomazone contribution
Selected Young Sedges	Supplementary direction	Include only where registered
Emerging Seedling Weeds	Early-season support	Clomazone contribution
Large Tillering Grasses	Reduced reliability	Not the preferred treatment window
Resistant Weed Populations	Population dependent	No universal control claim

Barnyardgrass-Led Mixed Weed Programs

Barnyardgrass should remain the central weed target of this page.

Echinochloa species are among the most important grass weeds in many rice-production systems. Heavy infestations can compete with rice for light, nutrients, space, and water.

The best commercial fit for this formulation is a field where:

• Barnyardgrass is the dominant grass problem
• Weeds are still young and actively growing
• Some broadleaf or sedge pressure is also present
• The grower needs more than a single Group 1 direction
• An early post-emergence treatment fits the production system

The formulation should not be positioned as a late rescue treatment for large, heavily tillered barnyardgrass.

Weed size matters. Once grass weeds become larger, tiller strongly, or become hidden below a dense rice canopy, reliable foliar exposure becomes more difficult.

Suitable Rice Production Systems

Direct-Seeded Rice

Direct-seeded rice is an important market direction for this combination.

Potential systems may include:

• Dry direct-seeded rice
• Wet direct-seeded rice
• Other locally registered direct-seeding systems

Direct seeding can create intense early competition because rice and weeds often emerge within a similar period.

The product may support rice weed-management programs where early barnyardgrass and mixed weed pressure require a selective post-emergence treatment.

Exact crop stage, water level, weed stage, and application method must follow the local registration.

Transplanted Rice

The formulation may also fit transplanted rice where specifically approved.

Important conditions include:

• Rice is adequately established
• Crop roots are functioning normally
• The crop is not severely stressed
• Target weeds are exposed
• Application occurs within the registered rice stage

A use approved in direct-seeded rice should not automatically be transferred to transplanted rice.

Irrigated Paddy Systems

Water management is part of the herbicide program.

The user must coordinate spraying with:

• Irrigation
• Drainage
• Weed exposure
• Reflooding
• Treated-water retention
• Field discharge restrictions

One fixed water-management schedule should not be copied across all countries or rice-production systems.

When Should the Herbicide Be Applied?

The main positioning is early post-emergence, when susceptible weeds are young and actively growing.

The preferred window should be determined by the exact registration rather than a universal number of leaves.

Important application principles include:

• Identify the dominant weeds before treatment.
• Apply before grass weeds become heavily tillered.
• Ensure sufficient weed foliage is exposed.
• Avoid treating severely stressed rice.
• Use calibrated spray equipment.
• Provide uniform coverage across the field.
• Follow the registered rate and spray volume.
• Confirm adjuvant requirements.
• Avoid unapproved tank mixtures.
• Review recent insecticide applications.
• Follow water-management directions.
• Inspect the field after treatment.

Visible symptoms may develop at different speeds because Metamifop, Propanil, and Clomazone do not produce identical field responses.

Rice Water Management Before and After Application

Before Application

Water level can affect weed exposure and herbicide contact.

Where the label requires it, field water may need to be managed so that sufficient weed foliage is available for treatment.

Important considerations include:

• Avoid completely submerging target foliage where foliar exposure is required.
• Maintain suitable rice crop conditions.
• Prevent uncontrolled discharge from the field.
• Avoid spraying immediately before major water movement.
• Follow local drainage requirements.

After Application

Reflooding should follow the exact product label.

Reflooding too early may reduce foliar exposure, while delaying water management beyond the approved program may affect crop and weed-management performance.

Important practices include:

• Follow the registered reflooding interval.
• Retain treated water where required.
• Prevent discharge into canals or neighboring fields.
• Avoid transferring treated water into sensitive crops.
• Respect aquatic and environmental restrictions.

SunAgro does not recommend one global drainage or reflooding interval.

Propanil Insecticide Compatibility Precautions

Propanil creates an important compatibility boundary that should be checked before application.

Official Propanil rice labels can restrict applications close to certain organophosphate and carbamate insecticides because these combinations or close sequential treatments may cause severe rice injury. One U.S. Propanil EC label, for example, specifies a separation period around such insecticide applications.

For this SunAgro formulation:

• Review recent insecticide treatments.
• Check planned insecticide applications.
• Do not assume tank-mix compatibility.
• Identify organophosphate insecticides.
• Identify carbamate insecticides.
• Follow the exact interval on the registered product label.
• Confirm crop safety before unfamiliar programs.

Physical tank compatibility does not mean biological crop compatibility.

The interval from another Propanil product should not be copied automatically to this formulation.

A Non-ALS Three-Mode Rice Herbicide Option

One important portfolio feature is that the three active ingredients belong to Groups 1, 5, and 13 rather than Group 2 ALS chemistry.

This creates a different product direction from rice herbicides built around Penoxsulam, Bispyribac-Sodium, Bensulfuron-Methyl, or other Group 2 actives.

This does not mean the formulation will automatically control ALS-resistant weeds.

A resistant population should only be expected to respond when:

• The target species is within the registered weed spectrum
• The alternative active ingredients remain effective
• The weed is treated at the appropriate stage
• The registered rate provides effective exposure
• No multiple resistance is present

The commercial value is therefore mode-of-action diversification, not a universal resistant-weed claim.

EC Formulation Features

What Does EC Mean?

EC means Emulsifiable Concentrate.

The active ingredients are formulated in a liquid solvent and emulsifier system designed to form an emulsion after dilution with water.

Correct EC performance depends on:

• Active ingredient stability
• Solvent compatibility
• Emulsification
• Storage temperature
• Water quality
• Tank preparation
• Packaging compatibility

Why Three-Active EC Quality Matters

A three-active formulation requires more than simply meeting the headline 4% + 4% + 30% content.

The product must maintain all three active ingredients and remain suitable for dilution after storage and transport.

Important EC Quality Parameters

Quality Parameter	Procurement Value
Metamifop Content	Confirms the 4% specification
Clomazone Content	Confirms the 4% specification
Propanil Content	Confirms the 30% specification
Active Ingredient Ratio	Supports batch consistency
Appearance	Detects crystallisation or separation
Density	Supports filling and batch consistency
Emulsifiability	Confirms initial dilution behavior
Emulsion Stability	Reduces separation after dilution
Re-Emulsification	Confirms recovery after standing
Persistent Foam	Supports tank preparation
Water Content	Supports storage evaluation
Acidity / Alkalinity	Supports formulation stability
Low-Temperature Stability	Identifies crystallisation risk
Elevated-Temperature Stability	Supports hot-market storage
Packaging Compatibility	Reduces solvent-container interaction

Product Advantages

The formulation has a distinct role within professional rice herbicide portfolios.

Its main advantages include:

• Three distinct HRAC groups: 1 + 5 + 13
• Strong barnyardgrass-led positioning
• Systemic grass activity from Metamifop
• Contact activity from Propanil
• Group 13 pigment-inhibition activity from Clomazone
• Non-ALS product direction
• Early post-emergence rice positioning
• Mixed weed portfolio value
• Practical liquid EC formulation
• SunAgro registration and distribution support

The product should not be described as resistance-proof, full-season, or universally effective against all rice weeds.

Comparison with Metamifop + Penoxsulam + Bispyribac-Sodium OD

SunAgro already supplies a Metamifop + Penoxsulam + Bispyribac-Sodium OD direction based on Group 1 plus Group 2 chemistry.

Dimension	Metamifop + Clomazone + Propanil EC	Metamifop + Penoxsulam + Bispyribac-Sodium OD
HRAC Structure	1 + 13 + 5	1 + 2 + 2
ALS Chemistry	No	Yes
Grass Anchor	Metamifop	Metamifop
Contact Component	Propanil	Not the main position
Pigment-Inhibition Component	Clomazone	No
Broadleaf / Sedge Support	Registration dependent	Group 2 components contribute
Main Position	Barnyardgrass-led early POST mixed weeds	Grass-led mixed rice weed program
Formulation	EC	OD

The EC product is more differentiated where a buyer needs a rice formulation that does not rely on Group 2 ALS chemistry.

The OD product provides a different mixed-weed structure with two Group 2 active ingredients.

Comparison with Cyhalofop-Butyl + Metamifop EC

SunAgro’s Cyhalofop-Butyl + Metamifop EC is a dual Group 1 rice grass herbicide, giving it a much narrower mode-of-action structure.

Dimension	Metamifop + Clomazone + Propanil EC	Cyhalofop-Butyl + Metamifop EC
Active Ingredients	Three	Two
HRAC Groups	1 + 5 + 13	1 + 1
Core Position	Barnyardgrass-led mixed weeds	Rice grass weeds
Broadleaf Support	Present where registered	Limited
Group 5 Contact Component	Yes	No
Group 13 Component	Yes	No
Mode-of-Action Diversity	Three groups	One effective group
Portfolio Role	Mixed weed early POST program	Focused grass weed program

The two formulations should therefore not be treated as direct substitutes.

Resistance Management

Three modes of action improve portfolio diversity, but they do not make the product resistance-proof.

Important principles include:

• Identify the dominant weed species.
• Review previous herbicide use.
• Apply to young susceptible weeds.
• Use the registered effective rate.
• Do not repeatedly rely on the same premix.
• Rotate with effective herbicides from other HRAC groups.
• Use pre-emergence residual programs where appropriate.
• Control surviving weeds.
• Prevent seed production.
• Maintain field sanitation.
• Integrate water management and cultural practices.
• Monitor unexpected control failures.

Metamifop and Cyhalofop-Butyl are both Group 1, so switching only between those active ingredients does not provide true cross-group rotation. SunAgro’s current dual Metamifop + Cyhalofop product reflects this same Group 1 relationship.

Propanil should not be assumed to control every Group 1- or Group 2-resistant barnyardgrass population. Multiple resistance can occur, and local sensitivity must be considered.

Crop Safety and Use Boundaries

Rice selectivity depends on the exact registration, crop stage, environment, application rate, and recent pesticide history.

Crop injury risk may increase when:

• Rice is severely stressed
• Roots are poorly established
• Water management is incorrect
• Application occurs outside the approved crop stage
• The rate exceeds the label
• Unapproved tank mixtures are used
• Restricted insecticides are applied too close to Propanil
• Extreme heat, cold, or other adverse conditions affect metabolism

Possible crop responses may include temporary discoloration, growth suppression, or more serious injury under unsuitable conditions.

Do not transfer crop-safety conclusions between:

• Direct-seeded and transplanted rice
• Different varieties
• Different climatic regions
• Different water systems
• Different Propanil-containing formulations

Environmental and Paddy-Water Precautions

Rice herbicide use requires particular attention to field water.

Users should:

• Follow the approved label.
• Review the SDS/MSDS.
• Wear required PPE.
• Prevent spray drift.
• Avoid direct discharge into canals.
• Prevent treated water moving into adjacent crops.
• Follow water-retention requirements.
• Avoid application before uncontrolled field discharge.
• Protect aquatic environments.
• Follow local buffer requirements.
• Control rinsate and spills.
• Dispose of packaging correctly.

The product should not be described as harmless to aquatic organisms or environmentally friendly.

Storage and Transport

Store the product in its original sealed container.

Recommended controls include:

• Keep it in a cool and ventilated warehouse.
• Protect it from direct sunlight.
• Avoid excessive heat.
• Protect it from freezing where required.
• Keep it away from ignition sources according to the SDS.
• Store containers upright.
• Prevent leakage.
• Keep it away from food, feed, seed, and water.
• Maintain batch identification.
• Inspect containers after transport.
• Follow local pesticide and dangerous-goods requirements.

Before use or distribution, inspect where required for:

• Crystallisation
• Phase separation
• Sediment
• Appearance changes
• Container swelling
• Seal damage
• Leakage
• Low-temperature effects
• Emulsion performance after storage

Registration, Document, and Supply Support from SunAgro

SunAgro supplies branded rice herbicides for qualified importers, distributors, registration companies, agricultural wholesalers, and local crop-protection partners.

For Metamifop 4% + Clomazone 4% + Propanil 30% EC projects, available support may include:

• Product specification
• Certificate of Analysis
• SDS or MSDS
• Technical Data Sheet
• Active ingredient information
• HRAC mode-of-action information
• EC formulation information
• Batch quality data
• Emulsion-stability data
• Packaging information
• Samples
• Available registration-related documents
• Export-document coordination
• Long-term supply planning

Document availability depends on the destination country, cooperation stage, rice production system, target weeds, and registration pathway.

SunAgro does not guarantee registration approval or performance outside the approved label.

Qualified partners can discuss rice herbicide registration cooperation based on their local Echinochloa pressure, resistance history, rice system, and product portfolio.

Stable Supply Behind SunAgro Branded Products

Reliable three-active EC supply requires control of raw materials, active ingredient ratios, emulsification, storage stability, and packaging compatibility.

Raw Material Control

Incoming materials may be checked for:

• Metamifop identity and purity
• Clomazone identity and purity
• Propanil identity and purity
• Relevant impurities
• Solvent specifications
• Emulsifier quality
• Stabilizer specifications

EC Formulation Production

Production controls may include:

• Dissolution
• Mixing sequence
• Temperature control
• Active ingredient ratio
• Density
• Homogeneity
• Filtration

Batch Quality Inspection

Relevant tests may include:

• Metamifop content
• Clomazone content
• Propanil content
• Appearance
• Density
• Acidity or alkalinity
• Initial emulsification
• Emulsion stability
• Re-emulsification
• Persistent foam
• Water content
• Low-temperature stability
• Elevated-temperature stability

Packaging and Shipment

Packaging checks may include:

• Solvent-compatible containers
• Seal integrity
• Leakage
• Pack volume
• Batch coding
• Label accuracy
• Carton strength
• Hot-climate transport suitability
• Shipment condition

Stable supply means repeatable 4:4:30 active composition, reliable EC performance, consistent documentation, and coordinated export planning.

Frequently Asked Questions

What is Metamifop 4% + Clomazone 4% + Propanil 30% EC?

It is a three-active selective rice herbicide positioned for registered early post-emergence management of barnyardgrass-led mixed weed populations.

What are the HRAC groups of the three active ingredients?

Metamifop belongs to Group 1, Propanil to Group 5, and Clomazone to Group 13.

What is the main role of Metamifop?

Metamifop provides systemic Group 1 activity against susceptible annual grass weeds, especially barnyardgrass-type pressure.

What does Propanil contribute?

Propanil provides Group 5 contact activity against exposed young susceptible weeds.

What does Clomazone contribute?

Clomazone adds Group 13 pigment-inhibition activity, which may produce bleaching in susceptible emerging or young weeds.

Is this mainly a pre-emergence or post-emergence herbicide?

The main page position is early post-emergence. Exact crop and weed stages must follow the registered label.

Does it control barnyardgrass?

Barnyardgrass is the main product direction where the exact formulation is registered for Echinochloa control.

Can it control large tillering barnyardgrass?

Large, heavily tillered weeds are not the preferred timing. Early treatment generally provides a more appropriate product fit.

Does it control broadleaf weeds and sedges?

Selected young broadleaf weeds and sedges may be included where the product registration supports them. They should remain secondary to the grass-weed direction.

Can it be used in direct-seeded rice?

Yes, where the exact direct-seeded rice system is included on the local label.

Can it be used in transplanted rice?

It may be used where transplanted rice is specifically registered. Crop stage and water management may differ from direct-seeded systems.

Why is water management important?

Water level affects weed exposure, spray contact, field retention, and crop conditions. Follow the registered drainage and reflooding program.

Can it be applied close to organophosphate or carbamate insecticides?

Propanil-containing herbicides may have important crop-safety restrictions around these insecticide groups. Follow the exact interval specified on the registered label.

Is this product suitable for ALS-heavy rice markets?

It provides a Group 1 + 5 + 13 product direction that does not rely on Group 2 ALS chemistry. This does not guarantee control of ALS-resistant weeds.

Does three modes of action mean resistance cannot develop?

No. Resistance management is still required, and surviving weeds should not be allowed to reproduce.

Can the formulation be tank-mixed?

Tank mixing may be possible where the label permits it. Confirm physical compatibility, crop safety, pesticide intervals, and local registration before use.

What documents can SunAgro provide?

Depending on the project, SunAgro may provide a COA, SDS/MSDS, TDS, product specification, EC quality data, packaging information, samples, batch records, and available registration documents.

Request Metamifop + Clomazone + Propanil EC Product Details

Metamifop 4% + Clomazone 4% + Propanil 30% EC is suitable for qualified companies developing professional early post-emergence rice herbicide portfolios for barnyardgrass-led mixed weed pressure.

To evaluate the product, please provide:

• Target country
• Company type
• Registration status
• Rice production system
• Target Echinochloa species
• Other target grasses
• Target broadleaf weeds or sedges
• Herbicide-resistance history
• Planned weed growth stage
• Water-management system
• Required pack size
• Expected annual volume
• Required technical documents
• Planned distribution channel

Request the product specification to review whether SunAgro Metamifop 4% + Clomazone 4% + Propanil 30% EC fits your registration pathway, rice weed spectrum, resistance-management portfolio, and long-term distribution plan.