FIELD: agriculture.
SUBSTANCE: invention relates to agriculture. To obtain an agrochemical composition based on polydisperse chitosan, chitosan with a molecular weight of 10,000 to 300,000 Da and a degree of deacetylation from 65 to 98 % is gradually introduced into depolymerization conditions under the action of acids, oxidizing agents, nitrosating agents or enzymes.
EFFECT: invention allows to increase the yield of agricultural crops, to increase the survival rate of plants under stress, to reduce the pesticidal load in the process of cultivation of plants.
6 cl, 22 ex, 13 tbl
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