FIELD: plant growing technology. SUBSTANCE: it is suggested the composition containing, at least, one toxic substance and preparation obtained due to successive extraction of Mortierella hygrophila micromycete biomass with nonpolar extragent in supercritical state with water, alkali, water, acid, water, alkali and water in composition of target additives followed by combining solid residue with the first extract. The innovation enables to decrease stress impact of toxic substances upon agricultural varieties, decrease their accumulation both in plants and on soil, and their migration, as well. EFFECT: higher efficiency. 2 cl, 5 ex, 3 tbl
