Chitosan Oligosaccharide Agriculture Organic Fertilizer

Chitosan oligosaccharide is an oligosaccharide product with a degree of polymerization between 2 and 20 obtained by degrading chitosan by a special biological enzyme technology, with a molecular weight of ≤3000Da. It is a low molecular weight product with good water solubility, great functional effects and high biological activity. It is fully soluble in water, easy to absorb and utilized by organisms.

It is stable, safe, non-toxic, non-stimulant and easily deliquesce.

Product Detail

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Product Description

The product is a high-quality water-soluble chitosan oligosaccharide with a deacetylation rate of 95% and a molecular weight within 3000DA, of which 90% is within 1000DA.

COS are derived from chitosan polymer, a natural polymer found in the exoskeleton of crustaceans. COS has been extensively studied and proven to have many benefits for plants, including improving resistance to disease and pests, promoting plant growth and increasing crop yields.

General Information



Light Yellow

Water Solubility








PH Value




Molecular Weight



Chitosan oligosaccharide is a powerful antifungal agent that can effectively fight against various plant fungal diseases such as powdery mildew and root rot. It strengthens the plant's defenses, stimulates the production of enzymes and activates the immune response, making the plant more resistant to disease.  COS also promotes plant growth by improving root development, nutrient uptake, and production of growth regulators:

Crops Virus Virus Attribution Prevention and Control Effect
Virus Fungi Bacteria
Tomato Early and late blight,
Virus disease,Wilt
84% ~ 88%
Cucumber Downy Mildew 79% ~ 82%
Chili pepper Virus Disease,Blight,
Anthrax,Epidemic Disease
78% ~ 90%
Eggplant Virus Disease 93% ~ 100%
Cabbage Soft Rot 78% ~ 85%
Soyal Bean Virus Disease 75% ~ 100%
Corn Silk Smut,Large and small spots 30% ~ 45%
Rice Rice Blast 71% ~ 92%
Peanuts Virus Disease 24~ 26%
Cauliflower Black Rot 63% ~ 64%
Papaya Mosaic 71% ~ 96%
Watermelon Virus Disease,Vine Blight,Blight 82% ~ 85%
Melon Powdery Mildew 71% ~ 86%
Banana Bundle Apocrosis 83% ~ 94%
Apple Mosaic,Black Heart Disease 77% ~ 94%
Tobacco Mosaic,Potato Y virus disease 75% ~ 87%
Tulip Downy Mildew 84% ~ 88%


It is an environmentally friendly fungicide derived from chitin in crustaceans. It is biodegradable, environmentally safe and a sustainable alternative to synthetic fungicides. The use of COS as a fungicide can protect plants from diseases, thereby increasing crop yield and improving crop quality. It effectively reduces the yield loss caused by fungal infection, resulting in a better harvest.

In the application of agricultural production, chitosan oligosaccharide can also make crops grow well, plants are robust, and photosynthesis is enhanced.

1. Promote root growth, it promotes early germination of plant seeds. The root system is developed, and the number of root hairs, fibrous roots and secondary roots is greatly increased.

2. Activated rhizosphere state, Chitosan oligosaccharide can activate the rhizosphere state, dissolve nutrient molecules, and quickly form a soil solution.

3. Stout, studies have found that chitosan oligosaccharide has the function of regulating plant development and is a natural plant growth regulator.

4. Strong sterilization ability, Chitosan oligosaccharide can replace seed coating agent, which can protect the normal development of seeds.

5. Boost immunity, Chitosan oligosaccharide is known as "plant vaccine", which shows its effect on crops.

Chitosan oligosaccharide preparation can enhance the antiviral ability of plants, change the plant growth mechanism, and enhance the immune function of the regulatory system, thereby ensuring the normal growth and development of plants.


Frequently Asked Question

1. What kinds of fertilizing way does Chitosan Oligosanccharide suitable for?
Most biostimulant kinds of materials can all support for spray, irrigation and other kinds of fertilizing actions. At the mean time, formula making is also workable.

2. In compare with other materials, what does chitosan oligosanccharide’s main advantage?
Biostimulant is always used as small quantity while in excellent efforts. For chitosan oligosanccharide itself, it is special not only in high efforts such as promoting root growth, improve soil structure,improve fertilizer efficiency, which are same with other kinds of biostimulants, but also has the function of immunity boost. it is known as “plant Vacine”, also has the function of kill virus.

3. Can Chitosan Oligosanccharide be used as feed addictive?
Yes it can.
No pyrogens, inducing animals to be ineffective and containing toxic activities, no labor feeding, help in midwifery, hematopoiesis, selection of the urinary system, etc.,

Meanwhile, it is also a kind of biological veterinary medicine that utilize its antibacterial effect to prevent or treat animal diseases caused by Staphylococcus aureus, Escherichia coli, Actinobacillus, Mutant Streptococcus and other bacteria;

Utilize the function of chitosan oligosaccharide to promote wound healing, which can be used for animal trauma or fractures Adjuvant therapy; it can also be used for the treatment of pet obesity; it is expected to make new Natural iron, zinc and calcium supplements.
Chitosan oligosaccharide has an effective protective effect on arsenic trioxide-induced cytotoxic injury of rat hepatocytes.


In the application of agricultural production, chitosan oligosaccharide can not only make crops grow well, plants are robust, and photosynthesis is enhanced, but also shows obvious effects in stress resistance, disease resistance and insect pest resistance, so it has a stable and significant income increase effect.

Root irrigation, drip irrigation: 750g ~ 1,500g/Ha;

Foliar Spray: dilute rates: 1:8,000~10,000;

Packaging and Storage

Packaging and storage Available in 10Kg, 20Kg Paper carton
Storage: Dry, cool, direct sun light proof, moisture proof warehouse.
Shelf life: 36 months.

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