Thidiazuron 50% WP and 98% TC Plant Growth Regulator

Item	Details
Active Ingredient	Thidiazuron
Common Name	TDZ
CAS No.	51707-55-2
Product Type	Plant Growth Regulator
Chemical Class	Phenylurea / diphenylurea-type PGR
Available Specifications	50% WP, 98% TC
Main Use Direction	Cotton defoliation and harvest aid programs
Mode of Action Context	Promotes leaf abscission and ethylene-related defoliation response
Crop Direction	Cotton and approved crop programs where locally registered
Market Positioning	High-activity harvest aid PGR for cotton production
Supply Support	SunAgro branded product supply, packaging communication, documents, and batch quality control

What Is Thidiazuron?

Thidiazuron is a high-activity plant growth regulator used mainly as a cotton defoliant and harvest aid product.

In cotton production, clean and timely defoliation is important before mechanical harvest. Excess leaves can increase trash content, affect lint cleanliness, and make harvest preparation more difficult. Thidiazuron is positioned to support leaf drop before harvest where approved by local registration.

This product should not be written as a general crop booster. Its value is not in nutrition supply or broad plant growth promotion. Its commercial value is in cotton harvest aid programs, especially controlled defoliation and unwanted regrowth management.

How Thidiazuron Works

Thidiazuron is absorbed mainly through cotton leaves. After absorption, it supports the natural leaf abscission process and helps the plant form an abscission layer between the leaf petiole and the stem.

This process allows cotton leaves to separate from the plant before harvest. In practical cotton production, this helps prepare the field for cleaner and more efficient harvest operations where local label approval allows use.

Thidiazuron is also associated with ethylene-related plant response. In cotton harvest aid programs, this hormone-related activity is part of the reason TDZ is widely recognized as a defoliant plant growth regulator.

Thidiazuron helps cotton leaves drop before harvest. It does not act as a fertilizer, pest control product, or general herbicide for weed control.

Thidiazuron Mode of Action

Thidiazuron works as a plant growth regulator with defoliant activity.

In cotton, its activity is linked with leaf abscission, ethylene-related response, and suppression of unwanted regrowth before harvest. This makes it different from common herbicides, fungicides, insecticides, or nutrition-based crop inputs.

Mode of Action Context	Commercial Meaning
Plant growth regulator activity	Used for crop physiological response, not nutrient supply
Leaf abscission support	Helps cotton leaves drop before harvest
Ethylene-related response	Supports harvest aid defoliation activity
Regrowth management	Helps manage unwanted vegetative regrowth where approved

This mode of action also means use timing is important. Thidiazuron should be used only when cotton maturity, weather condition, harvest schedule, and approved label directions support application.

Main Use Direction: Cotton Defoliation and Harvest Aid

The main agricultural direction for Thidiazuron is cotton defoliation.

Before cotton harvest, growers often need to reduce leaf material and prepare the crop for mechanical harvest. Thidiazuron supports this process by promoting leaf drop and helping manage late-season vegetative regrowth where local registration allows use.

Use Direction	Product Positioning
Cotton defoliation	Supports leaf drop before harvest where approved
Harvest aid program	Helps prepare cotton fields for mechanical harvest
Regrowth management	Helps reduce unwanted vegetative regrowth in cotton
Cleaner harvest support	Supports harvest preparation and lint quality management
Approved crop programs	Final crop scope must follow local registration and label

Thidiazuron should not be promoted as a universal defoliant for all crops. Cotton is the core commercial direction and should remain the main focus of the page.

Available Specifications: Thidiazuron 50% WP and 98% TC

SunAgro supplies Thidiazuron in two specification options. Both use the same active ingredient, but they serve different procurement purposes.

Specification	Best-Fit Market Use
Thidiazuron 50% WP	Finished wettable powder formulation for cotton defoliant product lines
Thidiazuron 98% TC	Technical material for formulation development and registration-oriented supply

The right choice depends on your target market, registration format, formulation plan, cotton harvest aid channel, packaging requirement, and local distribution model.

Thidiazuron 50% WP

Thidiazuron 50% WP is a wettable powder formulation for cotton defoliation and harvest aid markets where locally registered.

This formulation is suitable for finished product supply. It can be used in cotton harvest aid product lines, distributor channels, agricultural retail markets, and local crop protection programs where Thidiazuron 50% WP is approved.

The value of 50% WP is practical market use. It provides a clear formulation format, stable product positioning, and familiar powder handling for markets that already accept wettable powder products.

For procurement, buyers usually focus on active ingredient content, powder appearance, wetting performance, suspension attention, moisture control, package sealing, and carton protection.

Thidiazuron 50% WP should not be described as a low-end product because it is not technical material. It is the main finished formulation direction for markets that need a distribution-ready cotton defoliant PGR.

Thidiazuron 98% TC

Thidiazuron 98% TC is technical-grade active ingredient material.

This specification is mainly suitable for formulation companies, registration companies, and qualified local market partners that need Thidiazuron technical material for product development, formulation preparation, or registration-oriented projects.

98% TC should not be promoted as a direct field-use product. Its value is in active ingredient supply, formulation development, product registration communication, and local plant growth regulator product planning.

For technical material procurement, buyers usually focus on active ingredient content, technical material appearance, batch COA, moisture control, packing seal, storage condition, and shipment document consistency.

Choosing the Right Thidiazuron Specification

Thidiazuron specifications should be selected according to procurement purpose, not by concentration alone.

Market Need	Recommended Option
Finished cotton defoliant formulation	Thidiazuron 50% WP
Wettable powder product channel	Thidiazuron 50% WP
Distribution-ready harvest aid product	Thidiazuron 50% WP
Technical material for formulation	Thidiazuron 98% TC
Registration-oriented active ingredient supply	Thidiazuron 98% TC
Local formulation development	Thidiazuron 98% TC
SunAgro branded product supply	Mainly Thidiazuron 50% WP
Technical procurement project	Mainly Thidiazuron 98% TC

For buyers developing a local cotton harvest aid portfolio, 50% WP is more suitable for finished product distribution. For technical and formulation projects, 98% TC is the stronger fit.

Application Guidance

Use Thidiazuron only where it is locally approved.

Thidiazuron should be used only for registered cotton defoliation or approved harvest aid programs. It should not be used as a general herbicide for weed control, and it should not be applied to crops or situations not covered by the local label.

Because it is a high-activity harvest aid PGR, field use should consider cotton maturity, boll opening condition, leaf condition, regrowth pressure, weather, harvest schedule, and local application practice.

No specific dosage, dilution ratio, application timing, harvest interval, spray frequency, or tank-mix instruction should be used without an approved local label.

Cotton Harvest Aid Use Boundary

Thidiazuron should be used as part of a planned cotton harvest aid program.

Field response may vary by cotton maturity, leaf condition, crop vigor, temperature, moisture, regrowth pressure, product formulation, application coverage, and harvest timing. A well-positioned Thidiazuron program should match the crop stage and harvest window.

If cotton is not mature enough, harvest aid application may not deliver the expected field result. If weather conditions are unfavorable, defoliation may be slower or less uniform. If harvest is delayed after defoliation, regrowth may still become a management issue.

For this reason, Thidiazuron should not be promoted with claims such as immediate leaf drop, complete defoliation, no regrowth risk, or guaranteed lint quality improvement.

Crop Safety and Use Precautions

Thidiazuron is a high-activity plant growth regulator for cotton harvest preparation.

It should be used only when crop maturity, harvest schedule, weather conditions, and local label directions support application. Off-label use, excessive application, or use under unsuitable field conditions may lead to poor defoliation, delayed harvest preparation, or crop-quality concerns.

Local partners should also consider crop stress, temperature fluctuation, field moisture, regrowth tendency, and mechanical harvest planning before recommending field use.

For responsible market development, Thidiazuron should be positioned as a professional cotton harvest aid product, not as a simple leaf-drop chemical.

Registration and Compliance

Because Thidiazuron is used before harvest, registration and compliance should be handled carefully.

Before market promotion or field use, local partners should check local registration status, approved crop scope, label claims, application method, pre-harvest interval, residue requirements, worker safety rules, packaging label language, and import requirements.

For cotton-producing markets, harvest aid products are often connected with local agronomic practice and regulatory requirements. Product claims, use timing, safety wording, and crop directions should follow approved local labels.

SunAgro supports qualified market partners with product documents and supply communication for local registration and distribution cooperation. Final registration, label approval, crop claims, and field use directions must follow local regulations.

Storage and Transport

Store Thidiazuron products in sealed original packaging under cool, dry, and ventilated conditions.

Avoid moisture, direct sunlight, high temperature, package damage, and damp storage. Keep products away from food, feed, seed, and incompatible materials. Transport and storage should follow SDS and local regulatory requirements.

For Thidiazuron 50% WP, storage attention should focus on powder appearance, wetting performance, suspension attention, moisture control, dust awareness, package sealing, and carton protection.

For Thidiazuron 98% TC, storage attention should focus on technical material appearance, active ingredient stability, moisture control, packing seal, batch label, and COA consistency.

Packaging Support

SunAgro supports packaging communication for Thidiazuron 50% WP and 98% TC according to market needs and order requirements.

Thidiazuron 50% WP can be supplied in market-oriented finished product packaging, including sachets, bags, cartons, export cartons, batch coding, carton marks, and multi-language label communication.

Thidiazuron 98% TC can be supplied in technical material packaging suitable for qualified formulation and registration partners. Packaging can be aligned with technical material handling, shipment protection, batch identification, and destination-market requirements.

Final packaging plans can be adjusted according to product specification, registration direction, cotton market channel, distribution plan, and shipment requirement.

Document Support

SunAgro can support procurement, import communication, registration preparation, and shipment coordination with relevant product documents.

Document support may include COA, SDS/MSDS, TDS, product specification, packing information, label reference, batch information, shipment documents, and registration support documents where applicable.

For Thidiazuron 98% TC, technical specification, active ingredient analysis, and batch COA are especially important for formulation and registration-oriented buyers.

Quality Control

Quality control for Thidiazuron products focuses on active ingredient content, formulation appearance, moisture control, packaging integrity, and shipment readiness.

For Thidiazuron 50% WP, batch review should focus on active ingredient content, powder appearance, wetting performance, suspension attention, moisture control, package sealing, carton protection, batch record management, and shipment document review.

For Thidiazuron 98% TC, batch review should focus on active ingredient content, technical material appearance, moisture attention, packing seal, batch COA consistency, batch record management, and shipment document review.

Each batch should be checked according to product specification, packaging requirements, and export requirements before shipment.

FAQ

What is Thidiazuron?

Thidiazuron, also known as TDZ, is a plant growth regulator mainly used as a cotton defoliant and harvest aid where locally approved.

Is Thidiazuron a plant growth regulator?

Yes. Thidiazuron is a plant growth regulator with defoliant activity, especially in cotton harvest aid programs.

What is Thidiazuron used for?

Its main agricultural direction is cotton defoliation before harvest. It helps support leaf drop and harvest preparation in approved cotton programs.

How does Thidiazuron work?

Thidiazuron is absorbed by leaves and helps promote leaf abscission. In cotton, this supports leaf drop before harvest and helps prepare fields for harvest operations.

Is Thidiazuron a herbicide?

Some technical references may describe Thidiazuron as a herbicide and defoliant plant growth regulator. In product positioning, it should not be promoted as a general weed-control herbicide.

What is the difference between Thidiazuron 50% WP and 98% TC?

Thidiazuron 50% WP is a finished wettable powder formulation for cotton defoliation markets. Thidiazuron 98% TC is technical material for formulation development and registration-oriented supply.

Can Thidiazuron be used on crops other than cotton?

Only where local registration and approved label instructions allow use. Cotton defoliation is the main commercial direction for this product page.

Can Thidiazuron help manage cotton regrowth?

Thidiazuron can help manage unwanted regrowth in cotton harvest aid programs where approved. Field performance depends on cotton maturity, weather, application timing, regrowth pressure, and local label use.

Is Thidiazuron suitable for mechanical cotton harvest?

Thidiazuron is commonly positioned as a harvest aid for cotton defoliation before mechanical harvest where locally approved. Final use must follow local label instructions.

Can SunAgro supply Thidiazuron documents?

Yes. SunAgro can support COA, SDS/MSDS, TDS, product specification, packing information, label reference, batch information, shipment documents, and registration support documents where applicable.

Why Choose SunAgro

SunAgro supplies SunAgro branded crop protection and plant growth regulator products for qualified importers, distributors, registration companies, agricultural retailers, crop protection channels, and local market partners.

For Thidiazuron, SunAgro supports 50% WP and 98% TC specification supply. Our support covers product specification communication, packaging planning, document preparation, batch quality control, and export coordination.

This supply model is suitable for partners who need clear specifications, stable product quality, practical packaging options, and document support for local registration and distribution cooperation.

Partner with SunAgro for Thidiazuron Supply

If you are sourcing Thidiazuron 50% WP or 98% TC, SunAgro can support your project with product specification, packaging communication, document preparation, quality control, and export coordination.

Please share your destination country, target cotton market, registration direction, formulation preference, packaging request, and expected order volume. Our team will provide a suitable supply proposal based on your procurement needs.