Shandong Changrui Biotech Co., Ltd. is one of the leading manufacturers and suppliers of chitosan sl in China. Please feel free to wholesale bulk high purity chitosan sl in stock here from our factory. All our raw materials are with high quality and competitive price. Contact us for pricelist.
Product Introduction
Chitosan SL is a biogenic soluble liquid fungicide for agricultural use, distinct from chitosan applied as pharmaceutical excipient. This ready-to-use formulation is derived from natural crustacean shell source, functioning mainly by activating crop defence response and forming protective film on plant surfaces. It suppresses spore germination and pathogen cell development, controlling multiple fungal and bacterial diseases on foliage and root systems. It serves integrated disease management programs for field crops, fruits and vegetables, delivering dual benefits of disease suppression and plant vitality promotion.
Technical Specifications
|
Property |
Specification |
|
Appearance |
Amber to pale yellow clear homogeneous liquid |
|
Chitosan Content |
As labelled |
|
pH Value |
4.0-6.0 |
|
Dilution Stability |
No precipitation or stratification after dilution with standard hard water |
|
Low-Temperature Stability |
No crystal precipitation at 0℃±2℃ storage |
|
Heat Storage Stability |
Qualified after 54℃ accelerated storage, no obvious viscosity change or efficacy attenuation |
|
Water Miscibility |
Fully miscible with water in any proportion |
Health Benefits & Values
Plant Surface Protective Film Formation
Forms a breathable thin barrier on leaf and root surfaces to block pathogen adhesion and invasion.
Trigger Crop Induced Resistance
Activates endogenous defence pathways to boost plant self-defence capacity against fungi and bacteria.
Inhibit Pathogen Cell Wall Development
Interferes with microbial cell wall synthesis to restrain spore germination and lesion expansion.
Promote Root Development & Nutrient Uptake
Chitosan SL can improves root vigor and enhances absorption of mineral nutrients for healthier crop growth.
Wide Tank-Mix Compatibility
Compatible with most neutral or weakly acidic agrochemicals and foliar fertilizers for combined field application.
Core Value for End Users & Distributors
Ready-to-Use Liquid Formulation
No further grinding or formulation processing required; easy dilution, zero dust risk and simple field operation.
Biogenic Active Ingredient Matches Green Planting
Natural biological origin with low residue profile, well suited for green and export-oriented crop production.
Dual Function of Disease Prevention and Crop Vitality Boost
Combines pathogen inhibition and plant growth promotion, creating differentiated selling points compared with conventional chemical fungicides.
Adjustable Viscosity for Diverse Spraying Equipment
Uniform liquid system adapts to common sprayers, drip irrigation and root drench application without nozzle clogging.
Broad Market Adaptability
Fits fruit trees, vegetables, grain and cash crops, bringing stable repurchase potential for distributors in green agriculture segments.
End-Application Scenarios
Foliar Disease Prevention (Core Track)
Sprayed on leaves of fruits and vegetables to control early blight, powdery mildew and bacterial leaf spots by building surface protection.
Root Drench for Soil-Borne Disease Management
Applied around root zones to suppress soil pathogens and improve rhizosphere microenvironment for seedling protection.
Seed Treatment for Seed-Borne Disease Reduction
Used for seed soaking or coating to reduce pathogen attachment and improve seed emergence quality.
Tank-Mix Partner in Integrated Disease Management
Combined with low-dose chemical fungicides to reduce chemical selection pressure and slow pathogen resistance development.
Post-Harvest Preservation for Fresh Produce
Sprayed or dipped on harvested fruits and vegetables to form protective coating and slow post-harvest rot during storage and transportation.
Application Advantages and Market Positioning
Clear Differentiation From Pharmaceutical-Grade Chitosan
Chitosan SL focuses on plant immunity induction and crop surface film formation, not tissue repair or medical biomaterial applications.
Unique Dual Mechanism of Film Barrier + Immune Activation
Differs from single-site chemical fungicides; relies on physical barrier and plant self-defence to lower resistance risk.
Low Residue Biogenic Product Aligns With Global Market Demand
Meets requirements for green food and export crops, filling market demand for biological fungicide alternatives.
Flexible Application Across Pre-Harvest and Post-Harvest Stages
Covers crop growing period protection and post-harvest fresh-keeping, expanding usable scenarios for end customers.
FAQ (Technical Q&A)
Q1: How does it compare to conventional chemical fungicides in terms of application timing?
A: It is a plant immune inducer that requires time for the plant to build systemic acquired resistance. Best results are achieved with preventive application before disease onset. Chemical fungicides act directly on pathogens and can be used curatively after infection. For established disease, tank-mixing with a contact fungicide is recommended.
Q2: What is the optimal dilution rate and spray volume for foliar application?
A: Dilution rate depends on the registered formulation. For a typical 2% SL product, dilute 400–1200 times for fruit trees, or use 100–150 mL per mu for tomato late blight control. Always follow the specific product label.
Q3: Can it be used in organic agriculture?
A: Chitosan is listed by the US EPA as a minimum risk pesticide eligible for exemption from registration and is approved for use in organic crop production in many jurisdictions. Check local organic certification requirements for specific approval.
Q4: How does the film-forming property affect leaf respiration?
A: The film formed is breathable and does not block stomatal gas exchange at recommended concentrations. It acts as a physical barrier against pathogen adhesion while allowing normal leaf transpiration.
Q5: What is the shelf life and how should it be stored?
A: Shelf life is 2 years when stored sealed in a cool, dry, ventilated warehouse away from direct sunlight and freezing. Avoid storage below 0°C to prevent viscosity changes.
Q6: Does it have any effect on beneficial insects or pollinators?
A: Chitosan has no insecticidal activity and is not toxic to bees or beneficial insects at recommended application rates. It can be integrated into IPM programs without disrupting biological control agents.
Q7: How does it interact with copper-based fungicides?
A: Chitosan can enhance copper ion uptake by destabilizing fungal cell walls, showing synergistic effects when tank-mixed with copper preparations. A small-scale jar test is recommended to check for precipitation before large-scale mixing.
Q8: What crops have shown the best response to Chitosan SL application?
A: Registered uses include tomato (late blight), sweet melon (virus disease), and pepper tree (anthracnose). Field trials on grapevine downy mildew also demonstrated induced systemic resistance via the salicylic acid pathway.
Q9: How does the viscosity affect spray equipment compatibility?
A: The SL formulation is a true solution with no insoluble particles. At recommended dilution rates, viscosity is low enough for standard hydraulic nozzles, drip irrigation, and root drench equipment without clogging.
Q10: Can it be applied through drip irrigation for soil-borne disease management?
A: Yes. Root drench application through drip irrigation delivers chitosan to the rhizosphere, where it suppresses soil pathogens and improves root microenvironment. Flush the system with clean water after application.
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