Chitosan and its derivatives have plant
protecting and antifungal properties. They can
trigger defensive mechanisms in plants against
infections and parasite attacks, in very low
concentrations in the order of a few milligrams per cubic
metre of water. They can be used in solution, in powder
form or as coatings of seeds.
Thus, in the USA, in a region where there are major
fungal attacks, crop yield increases of more than
20% have been obtained in tests of coated seeds in
comparison with uncoated seeds.
Chitosan acts on several levels. Apart from its
specifically antifungal action, it strengthens the root
system and thickens the stem. Some studies also show that
chitosan stimulates the plant's synthesis of protective
agents.
In related fields, chitosan behaves like a fertiliser
by accelerating the germination and growth of plants.
Chitin and chitosan could become both the natural
fertilisers and the pesticides of the year
2000.
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about the uses of chitosan for agriculture,
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Other uses of chitosan
