Abstract

The leguminous crops grown on a natural infectious background in small-plot experiments at the Botanical Garden of the National Research University “BelSU” (Belgorod, Russia). The strains from rhizosphere and filloplanes of leguminous crops were identified by the method of water washes. The pathogenic properties of the isolated strains were determined by the bioassay method on seeds. The study of pathogenicity micromytcetes strains revealed that Alternaria alternata, Cunninghamella echinulata, Trichoderma lignorum had a stimulating effect on seed germination and the development of test plants of legumes, while Aspergillus niger and Bipolaris australiensis had an inhibitory effect. The species Alternaria infectoria, Fusarium heterosporum, Stemphylium solani, Ulocladium botrytis possessed a non-pathogenic property to perennial legume grasses, and in one degree or another caused inhibition of the development of annual legumes.

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