Taxonomic analysis of soil phytopathogenic mycocomplexes of different varieties of faba beans in the Central Black Earth Region of the Russian Federation

The species composition and structure of soil complexes micromycetes under faba beans were studied. indices the frequency occurrence abundance microscopic fungi in soils ten varieties analyzed comparison with control (pure fallow). revealed 20 from 10 genera. 16 genera identified soils. Most belong to Ascomycota division (classes Dothideomycetes, Eurotiomycetes, Saccharomycetes, Sordariomycetes). In beans, number micromycete propagules is significantly higher (30.6 ± 2.5 thousand CFU / g soil) than (12.5 2.3 g). biodiversity was maximal (Pielu index 0.75). An increase dominance studied (Simpson’s 0.09-0.24) noted soil, a 0.07. Phytopathogenic found: Ascochyta fabaе , Alternaria tenuissima Cladosporium herbarum Fusarium culmorum F. oxysporum solani Ulocladium botrytis .