FIELD: biotechnology.SUBSTANCE: group of inventions relates to biotechnology. Glomus iranicum var. Tenuihypharum var. nov. strain, which can be used as a biostimulator, which helps increase crop yield, deposited in the Belgian Coordinated Collections of Microorganisms under number 54871, comprising the sequence SEQ ID NO: 1. Disclosed is a composition comprising spores and an extramatrical mycelium of said strain and smectite clays of 2:1 is proposed, and use thereof as a bionematicide. Said composition may include fungicides, biofungicides, insecticides, bioinsecticides, nematicides and bionematcides.EFFECT: inventions increase the yield of agricultural crops in intensive farming conditions.16 cl, 7 tbl, 2 ex
