Quick Facts
What is Chitosan Oligosaccharide Agriculture Grade (COS)?
Chitosan Oligosaccharide (COS), also known as Chitooligosaccharide, is a low molecular weight, water-soluble oligosaccharide derived from natural chitosan.
Agriculture Grade COS is widely used as a biological plant growth promoter, natural elicitor, and fertilizer additive to improve crop growth, nutrient utilization, and resistance against environmental stresses.
Produced from renewable marine sources such as shrimp and crab shells, COS provides an environmentally friendly solution for modern sustainable agriculture.
Due to its excellent water solubility and high biological activity, it can be applied through foliar spraying, fertigation, seed treatment, and soil improvement programs.
Key Features
High Water Solubility
Fully dissolves in water for foliar or soil applications.
Bioactive & Safe
Stimulates plant immunity and growth safely.
Low Molecular Weight
≤1500 Da ensures high absorption.
Applications
Foliar Spray
2–4 g / 3000 sq.ft
Soil Fertilization
5–10 g / 3000 sq.ft
Seed Treatment
1 g/L solution
Fertilizer Additive
0.1–0.5%
Specifications
| Items | Specifications |
| Appearance | Yellow powder |
| Average Molecular Weight | 3000 Da max |
| D.A.C | 85% MIN |
| Content | 90% min |
| Ash % | 1.0 max |
| Moisture % | 10.0 max |
| Insoluble % | 0.5 max |
| Particle size | 100 mesh |
| PH | 5-7 |
| Coli form bacteria | Negative |
| Salmonella sp. | Negative |
| Yeast (cfu/g) | 100 max |
| Total plate count (cfu/g) | 1000 max |
Packaging, Storage & Transportation
- Standard Export Packaging: 25KG fiber drums/25KG cartons
- Store in a cool and dry place. Keep tightly closed
- Shelf Life: 24 months
Frequently Asked Questions about Chitosan Oligosaccharide Agriculture Grade
What is Chitosan Oligosaccharide used for in agriculture?
Chitosan Oligosaccharide (COS) is used as a natural plant biostimulant to promote root development, enhance plant immunity, improve nutrient absorption, and increase crop tolerance to environmental stresses such as drought, salinity, and temperature fluctuations.
What is the difference between Chitosan and Chitosan Oligosaccharide?
Chitosan Oligosaccharide has a much lower molecular weight compared with traditional chitosan, resulting in better water solubility, faster absorption, and higher biological activity. This makes COS more suitable for agricultural applications such as plant growth promotion and stress resistance enhancement.
How is Chitosan Oligosaccharide applied to crops?
COS can be applied through foliar spraying, fertigation, irrigation systems, seed treatment, and fertilizer formulations. The recommended application method depends on crop variety, growth stage, and farming conditions.
Is Chitosan Oligosaccharide suitable for organic agriculture?
Chitosan Oligosaccharide is derived from natural marine biomass such as shrimp and crab shells. Due to its natural origin and eco-friendly properties, COS is widely used in sustainable agriculture and environmentally friendly crop production programs.