FIELD: agriculture. SUBSTANCE: method involves treating plant with composition comprising preparation made in the form of mixture of solid residue produced upon extraction of biomass of Mortierella alpina micromycete by means of number of extractants and first extract. Plant treating composition is manufactured on line having extractors, biomass charging device and device for supplying extractants to respective extractors, mixer for mixing first extract and solid residue, and packing machine. EFFECT: increased coefficient of utilization of raw material and improved protection of plants. 12 cl, 2 dwg
