Metribuzin 70% WDG Herbicide | Selective Pre- and Post-Emergent Weed Control

Product Parameters and Specifications

The product specifications for Metribuzin 70% WDG must clearly define the active ingredient, nominal content, formulation, and corresponding quality requirements. For importers and distributors, specification consistency serves as a critical basis for supplier audits, product comparisons, and batch acceptance.

Parameter Items	Product Information
Product Name	Metribuzin 70% WDG Herbicide
Active Ingredient	Metribuzin
Content	70%
Formulation	WDG
Chinese Name	Metribuzin
CAS Number	21087-64-9
Chemical Family	Triazinone
HRAC Group	Group 5
Mode of Action	Photosystem II Inhibition
Herbicide Type	Selective Herbicide
Application Timing	Subject to the actual registered label
Target Weeds	Subject to the specific product’s approved scope
Quality Standard	Subject to actual product specifications and applicable standards
Packaging	To be confirmed based on actual supply specifications
Minimum Order Quantity	1,000 kg; subject to confirmation upon order placement

Confirmation of Active Ingredients and Content

Metribuzin is the core active ingredient of this product. Its content, chemical identity, and analytical methods shall be based on the actual product label, quality standards, and batch test reports.

The nominal content is 70%; units or conversion factors should not be altered arbitrarily without corresponding measurement basis. Prior to formal procurement, it must be confirmed that the active ingredient content on the label and in the COA uses consistent measurement methods.

Technical Characteristics of the WDG Formulation

WDG (Water-Dispersible Granules) is a water-dispersible granule formulation. This formulation delivers the product in granular form, which disperses in water to form a dispersion system for application.

When evaluating WDG formulations, purchasers should focus on the granules’ appearance, dispersibility, suspension properties, wettability, storage stability, and packaging compatibility. Specific parameters and acceptance criteria must be determined based on the actual product specifications and applicable quality requirements.

The WDG formulation does not imply that the product will necessarily dissolve completely in water, nor should one infer from the formulation name alone that it offers higher field efficacy or is equally suitable for all application equipment.

Mechanism of Action of Metribuzin

Metribuzin belongs to the triazinone class of herbicides and is classified in HRAC Group 5. Its primary mechanism of action is the inhibition of Photosystem II (PSII) in plant photosynthesis.

This process disrupts electron transport during photosynthesis, preventing susceptible plants from maintaining normal physiological activities, which subsequently leads to growth inhibition, tissue damage, or other visible symptoms.

Inhibition of Photosystem II

Metribuzin exerts its herbicidal effect by interfering with the electron transport process associated with Photosystem II. The response of susceptible weeds depends on plant species, timing of application, uptake, and environmental conditions.

Therefore, one cannot infer from its HRAC Group 5 classification alone that this product has the same efficacy against all weeds, nor should the mechanism-of-action classification be directly equated with the registered control spectrum of a specific product.

Differences from Other Mechanisms of Action

HRAC Group 5 is a classification of mechanisms of action; it is not a product quality rating, nor is it an evaluation of the level of efficacy.

When formulating weed resistance management strategies, comprehensive consideration should be given to the target weeds, local resistance status, the actual mechanism of action of the active ingredient, and the approved application schemes.

It is not possible to conclude that a particular formulation has better resistance management efficacy simply by increasing the number of mixed ingredients. Whether different active ingredients can form a meaningful combination of modes of action must be verified on a case-by-case basis.

Target Weeds and Control Scope

Metribuzin exhibits selective herbicidal properties; however, specific target weeds must be based on actual product registrations and efficacy data. Sensitivity may vary significantly among different weed species; therefore, the general technical characteristics of an active ingredient cannot be directly applied as a uniform control promise for all commercial formulations.

Weed Categories	Technical Notes	Points to Confirm
Broadleaf Weeds	Some susceptible species may be effectively controlled	Specific weed species and registration scope
Grass Weeds	Sensitivity varies among different species	Target species and data on actual efficacy
Pre-emergence Weeds	Relevant formulations may be used for managing specific weeds before emergence	Registered crops, soil conditions, and approved uses
Post-emergence weeds	Effectiveness against emerged weeds depends on the specific product and application conditions	Weed growth stages, registration scope, and product labels
Mixed weed communities	Different weeds may exhibit varying levels of control efficacy	Actual weed composition and registered control spectrum

How to determine if a target weed is suitable?

For importers and distributors, product selection should be based on the primary weed problems in the target market, and the product’s registration scope and relevant efficacy data should be verified.

If a customer is concerned with weed management in a specific crop, crop selectivity, weed species, application timing, and locally approved application schemes should all be considered.

POMAIS’s Weed Management Solutions serve as a portal on the website to further explore different approaches to weed management; however, specific product applications should still be based on the registered label of the respective product.

Crop Applications and Selectivity

Metribuzin formulations may be registered in various countries for crops such as soybeans, potatoes, tomatoes, and wheat. However, these crops should not automatically be considered an exhaustive list of crops for which this product has been approved.

For Metribuzin 70% WDG, refer to the approved product label in the target market to confirm applicable crops, application timing, target pests, and relevant restrictions.

Crop Varieties and Tolerance

Tolerance to Metribuzin may vary among different crop varieties. Even if a crop has a relevant registration in certain markets, this does not imply that all varieties and all production conditions will exhibit the same level of safety.

During the product evaluation process, tolerance data for specific crop varieties should be verified, and attention should be paid to the restrictions listed on the product label.

Impact of Soil Conditions

For Metribuzin formulations intended for soil application, factors such as soil texture, organic matter content, and pH may affect the availability of the active ingredient, herbicidal activity, and crop safety.

The impact of soil conditions is not identical across all regions and products. Uniform safety conclusions cannot be drawn in the absence of evidence specific to the product and local conditions.

Differences Between Pre-emergence and Post-emergence Uses

Pre-emergence and post-emergence treatments are distinct application scenarios; their applicable conditions depend on the specific product registration, target weeds, and application method.

Although some Metribuzin formulations are approved for both pre-emergence and post-emergence use, the active ingredient name alone does not imply that a product is approved for both uses. Relevant descriptions must align with the actual approved label.

Application Requirements and Technical Restrictions

The specific application conditions for Metribuzin 70% WDG shall be governed by the approved label for this product in the target market. This page does not provide uniform application rates across crops or countries, nor should parameters from other concentrations or formulations be directly applied to this product.

Information to Verify Before Use

Verification Items	Key Requirements
Product Specifications	Confirm the active ingredient content and WDG formulation
Target Crops	Confirm whether the product has the corresponding registration
Target Pests	Verify the approved weed species and relevant efficacy data
Application Timing	Follow the pre-emergence or post-emergence usage specified on the registered label
Soil Conditions	Pay attention to soil restrictions related to the product label
Crop Safety	Verify variety tolerance and related restrictions
Mixing Requirements	Do not treat unconfirmed mixing schemes as general recommendations
Application Parameters	Follow the requirements specified on the specific product label

Mixing and Resistance Management

Metribuzin belongs to HRAC Group 5. When implementing resistance management, attention should be paid to the actual differences in modes of action; the value of a product for resistance management should not be judged solely based on the number of active ingredients it contains.

For example, while both Metribuzin and Atrazine belong to HRAC Group 5, the mere fact that these two ingredients are used together does not justify claiming that they form a resistance management combination with different modes of action.

For other mixing schemes, it is also necessary to verify product registration, crop safety, formulation compatibility, and the basis for actual application. This product page does not provide unverified general mixing recommendations.

Formulation Quality Control and Technical Documentation

For Metribuzin 70% WDG, buyers should focus on active ingredient content, formulation physical properties, batch consistency, and storage stability.

Quality control requirements should be based on actual product specifications and applicable standards, rather than inferring product quality solely from the names of the active ingredients.

Key Quality Parameters

Quality Items	Key Points for Procurement Review
Identity of Active Ingredient	Confirmation of Metribuzin and Corresponding Analytical Methods
Active Ingredient Content	Verify that the labeled content matches the batch test results
Appearance	Check for compliance with product specifications
Wetting Properties	Evaluate according to applicable quality standards
Dispersibility	Confirm the dispersion behavior of granules in water
Suspension Properties	Verify compliance with relevant quality requirements for the actual product
Storage Stability	Based on available product stability data
Packaging Compatibility	Confirm the suitability of packaging materials for the product
Batch Traceability	Confirm that the batch number corresponds to the quality documentation

Specific test items, test methods, and acceptance limits shall be determined based on the actual product specifications and applicable standards.

COA: Certificate of Analysis

A COA (Certificate of Analysis) is used to document the test results for a specific batch and its compliance with the corresponding quality standards.

The purchaser should verify that the COA corresponds to Metribuzin 70% WDG and is not a test report for other concentrations, formulations, or different products.

For long-term procurement projects, batch acceptance requirements, quality dispute resolution mechanisms, and relevant traceability information should also be clearly defined.

SDS and TDS: Safety and Technical Data

The SDS (Safety Data Sheet) provides information on product hazards, operational precautions, storage, and emergency response.

The TDS (Technical Data Sheet) outlines the actual product specifications, technical parameters, and other relevant information.

The aforementioned documents must correspond to the actual product being supplied. Other technical documentation required for registration must be confirmed item by item based on the specific product, target market requirements, and the scope of information actually available.

Safety, Storage, and Packaging Requirements

Storage and handling requirements for Metribuzin 70% WDG must be followed in accordance with the actual product label, SDS, and applicable regulations.

Storage Requirements

The product shall be stored in accordance with the conditions specified on the approved label and in the SDS, with the original packaging kept intact, and appropriate measures taken to prevent moisture absorption, packaging damage, and unauthorized access.

A uniform storage temperature or shelf life shall not be specified for all Metribuzin 70% WDG products in the absence of actual stability data.

Packaging and Transportation

Packaging specifications, container materials, and labeling requirements should be confirmed based on the actual product supplied and the regulations of the destination.

Packaging Items	Key Procurement Confirmation Points
Packaging Capacity	Actual Available Specifications
Packaging Materials	Compatibility with the formulation
Seal integrity	Packaging integrity and shipping requirements
Product labeling	Consistency of content, dosage form, and related information
Batch identification	Correspondence between batch numbers and relevant quality documents
Shipping conditions	Applicable shipping and import requirements

Registration and regulatory requirements

Approved crops, target pests, application methods, and marketing requirements for Metribuzin formulations may vary across different countries and regions.

Prior to procurement, verify the market access status of the specific product in the target market; do not directly apply the registration status of one country to other markets.

POMAIS can assist customers in verifying the specifications and relevant documentation required for procurement based on the product documentation and supply terms actually available. Specific registration requirements and approval results are subject to the regulations of the competent authorities.

Packaging and Bulk Purchasing

POMAIS collaborates with pesticide importers, distributors, wholesalers, and registration companies to supply products.

For Metribuzin 70% WDG, buyers should specify the product specifications, estimated purchase quantity, packaging requirements, and target market during the inquiry stage to verify actual supply conditions.

What needs to be confirmed for bulk purchasing?

Procurement Items	Items to Be Confirmed
Product Specifications	Metribuzin 70% WDG
Target Market	Countries of Import and Sale
Registration Status	Product Market Access in Target Markets
Purchase Quantity	Estimated Purchase Volume and Purchase Cycle
Packaging Requirements	Capacity, Materials, and Labeling Requirements
Quality Documentation	Required documents such as COA, SDS, TDS, etc.
Delivery Terms	Actual supply capacity, delivery time, and commercial terms

The standard minimum order quantity for the pesticide business is 1,000 kg.

For this product, the actual supply status, packaging arrangements, and order terms must still be verified during the purchase confirmation phase.

Branding and Packaging Options

If a customer requires branded labels or custom packaging, the product’s actual supply specifications, labeling requirements, and target market regulations must be confirmed first.

Any customization must be consistent with the product’s true identity, approved uses, and safety information. Custom labels cannot replace registration and cannot be used as a basis for claims beyond the scope of approval.

Frequently Asked Questions

What type of herbicide is Metribuzin 70% WDG?

Metribuzin 70% WDG is a selective herbicide. Its active ingredient, Metribuzin, belongs to the Triazinone class and has a mode of action classified under HRAC Group 5; it primarily inhibits photosystem II to disrupt photosynthesis in susceptible weeds.

Can Metribuzin 70% WDG be used for pre-emergence and post-emergence applications?

Some Metribuzin formulations are approved for pre-emergence or post-emergence use; however, the actual application window for this product must be confirmed based on the registered label approved for the target market. It cannot be assumed that both uses are approved solely based on the name of the active ingredient.

Can Metribuzin 70% WDG be used on soybeans and potatoes?

Metribuzin-based formulations are used on crops such as soybeans and potatoes in some markets; however, to determine whether this product is suitable for specific crops, it is necessary to verify its registration status, crop variety tolerance, and label restrictions.

Do soil conditions affect the performance of Metribuzin?

Yes. For formulations intended for soil treatment, factors such as soil texture, organic matter content, and pH may affect herbicidal activity and crop safety. Actual assessments should be based on both the product label and the conditions in the target region.

Which HRAC Group does Metribuzin belong to?

Metribuzin belongs to HRAC Group 5 and primarily acts on photosystem II in plants. This classification is used to identify the mode of action and does not indicate product quality grade or efficacy against all weeds.

What are the main quality documents for Metribuzin 70% WDG?

Buyers may verify the COA, SDS, TDS, and other necessary documents based on project requirements.
The documents must correspond to the actual Metribuzin 70% WDG being supplied; documents for products with different specifications cannot be used as substitutes.

What is the minimum order quantity for Metribuzin 70% WDG?

The standard minimum order quantity for POMAIS’s pesticide business is 1,000 kg. Specific product supply conditions, packaging arrangements, and delivery terms must be verified upon order confirmation.

Obtain Metribuzin 70% WDG product specifications

POMAIS offers professional procurement partnerships to pesticide importers, distributors, wholesalers, and registration companies.

If you are evaluating Metribuzin 70% WDG, please prepare information such as the target country, estimated purchase quantity, packaging requirements, and required technical documents so that we can verify the actual product specifications and supply conditions.

We recommend focusing on the following key points before placing a formal purchase order:

• Whether the active ingredient content and formulation meet procurement requirements.
• Whether the product meets the market access requirements of the target market.
• Whether relevant documents such as COA, SDS, and TDS are available.
• Whether packaging, shipping, and delivery terms meet project requirements.
• Whether the purchase quantity aligns with the actual supply plan.

Specific supply arrangements are subject to actual product data, availability, and applicable regulations.

Submit your product procurement request to further confirm the specifications and supply terms for Metribuzin 70% WDG.