FIELD: agriculture. SUBSTANCE: method involves treating plants with composition comprising at least one toxic substance and specific additive containing preparation obtained by exposing biomass of Mortierella globalpina micromycete to sequential extraction with nonpolar extractant in supercritical state, water, alkaline, water, acid, water, alkaline and water, with following uniting first extract with solid residue. EFFECT: reduced stress effect of toxic substances upon farm crops, decreased accumulation of toxic substances in plants and on soil and restricted migration thereof. 3 cl, 3 tbl, 5 ex
