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Lawn Care with Chitosan Oligosaccharide(COS)

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Chitosan Oligosaccharide (COS), derived from the deacetylation and degradation of chitin, boasts remarkable properties such as a small molecular weight, excellent water solubility, and high biological activity. In lawn maintenance, it emerges as a natural bio-stimulant and immune inducer, offering multiple benefits including promoting growth, resisting diseases and pests, and improving soil quality.
Contents hide
1 Core Mechanisms of Action
2 Specific Application Scenarios
3 Usage Suggestions
4 Precautions
5 Research Cases

Core Mechanisms of Action

  1. Enhance Stress Resistance
  • It activates the defense enzyme system (such as phenylalanine ammonia-lyase and peroxidase) of lawn grasses (like Poa pratensis, Festuca arundinacea, Lolium perenne, etc.), improving their resistance to diseases (such as brown patch, pythium blight, etc.), drought and low temperature.
  • It induces plants to produce disease-resistant substances (such as chitinase) to inhibit the infection of pathogenic bacteria (such as Fusarium, Rhizoctonia, etc.).
  1. Promote Growth
  • It stimulates root development, increases the tiller density of lawn grasses, and makes the leaves greener.
  • It regulates plant endogenous hormones (such as increasing the levels of auxin and cytokinin) to accelerate lawn repair.
  1. Improve Soil
  • It inhibits the reproduction of soil-borne pathogenic bacteria and promotes the proliferation of beneficial microorganisms (such as actinomycetes and nitrogen-fixing bacteria).
  • It chelates heavy metals and alleviates soil compaction.

Specific Application Scenarios

  1. Disease Prevention and Control
  • Applicable diseases: brown patch, dollar spot, pythium blight, fusarium blight, etc.
  • Usage methods:
  • Prevention: Dilute 500-1000 times (0.1-0.2% concentration) and spray once every 15-20 days.
  • Early stage of disease: Compound with fungicides (such as azoxystrobin) to enhance the efficacy.
  1. Promote Lawn Establishment and Repair
  • Pre-sowing treatment: Soak seeds in 50-100 mg/L chitosan oligosaccharide solution for 2-4 hours to improve germination rate.
  • Damage repair: After mowing or trampling, spray 0.05% chitosan oligosaccharide solution to shorten the recovery period by 30%-50%.
  1. Resist Abiotic Stress
  • Winter protection: Spray before the temperature drops in autumn to improve the cold resistance of the lawn (especially for cool-season grasses).
  • Drought management: Use with water-retaining agents during drought periods to reduce leaf wilting.
  1. Reduce the Use of Chemical Agents
  • Compound with biological pesticides (such as Bacillus subtilis) or low-dose chemical pesticides to reduce pesticide residues.

Usage Suggestions

  1. Concentration Control
  • Foliar spray: 0.05%-0.2% (50-200 mg/L), excessive concentration may inhibit growth.
  • Soil irrigation: 0.1%-0.3%, used in combination with irrigation.
  1. Timing and Frequency
  • 1-2 times a month during the growing season; it can be increased to once a week (low concentration) during the high-incidence period of diseases in high temperature and humidity.
  1. Compatibility Taboos
  • Avoid mixing with strong acid pesticides (chitosan oligosaccharide is stable under weak acid to neutral conditions).

Precautions

  • Environmental friendliness: Chitosan oligosaccharide is easily degradable, safe to humans and the ecological environment, and suitable for organic lawn management.
  • Storage conditions: Store in a cool and dry place, and prepare and use immediately to prevent degradation.
  • Effect observation: The effect is significant after continuous use for 3-4 times, and it is necessary to combine with reasonable fertilization (such as supplementing nitrogen fertilizer).

Research Cases

  • Golf course greens: 0.1% chitosan oligosaccharide treatment increased lawn density by 20% and reduced disease incidence by 35% (cited from Pratacultural Science 2022).
  • Football field lawn: Compound with seaweed fertilizer, the trampling resistance in summer is significantly enhanced.

In conclusion, chitosan oligosaccharide is a versatile and effective product for lawn care, providing a natural and sustainable solution for maintaining healthy and beautiful lawns. Whether you are managing a golf course, a football field, or a home lawn, incorporating chitosan oligosaccharide into your maintenance routine can yield impressive results.

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