Micromycetes in ampelocenosis soil under different keeping system

Abstract

Abstract As a result of 2019 research it was found that the largest number of micromycetes colony-forming units in the soil was observed in the variant with sod formation. The number of CFU in 1 gram of absolutely dry soil in the variant with sod formation in May exceeded the variant with black fallow fivefold and in August twofold. Species diversity was represented by 11 species belonging to 8 genera: Mucor, Trichoderma, Penicillium, Aspergillus, Fusarium, Alternaria, Cladosporium, Vertecillium. In the complex of isolated micromycetes in the variant with sod formation during spring period the p. Trichoderma species predominated. Its occurrence frequency was 80%. On the black fallow in this period the dominant position was occupied by r. Penicillium species (30.4%). During summer period in sod formation variant the genera species Fusarium, Alternaria, Cladosporium, Vertecillium were isolated with a higher occurrence frequency, while the dominant position was occupied by p. Penicillium species (27.4%). In the variant with black fallow soil keeping system p. Penicillium and Aspergillus species predominated.