Abstract
Antagonism of fungi of the genus Trichoderma and various phytopathogenic fungi was investigated. The strains of the genus Trichoderma, which have potential value for the production of biological products for plant protection, have been identified. The highest fungicidal activity among the tested strains is shown by T. asperellum, which determines the prospects of using this strain as a biofungicide. The investigations were carried out in the research laboratory of the Peasant Farm “Tsirulev E.P.”
Highlights
Improvement of agricultural production and accelerated rates of scientific and technological progress expand the degree of human impact on the biosphere as a whole, and especially on agricultural biocenosis
The investigation of the antagonistic activity of the fungus Trichoderma asperellum showed a high degree of hyperparasitism against the phytopathogens Alternaria sp. and Colletotrichum coccodes
The largest zone of antagonistic activity of the fungus Trichoderma crassum is observed in experiments with Alternaria sp. and Phoma sp
Summary
Improvement of agricultural production and accelerated rates of scientific and technological progress expand the degree of human impact on the biosphere as a whole, and especially on agricultural biocenosis. Intensification of the methods of cultivation of agricultural crops leads to a shift in the balance between microorganisms towards pathogens. Violation of crop cultivation technology, unjustified use of various plant protection products, as well as unfavourable environmental factors can lead to the accumulation of a large complex of pathogenic microbiota in the soil Plant residues that get into the soil during harvesting, affected by phytopathogens, are the main sources of accumulation, and result in the infection of plants. The harmfulness of phytopathogenic fungi in soil and on plant residues is reduced by suppressor microorganisms. Suppressor microorganisms include representatives of fungi of the genus Trichoderma and certain species of the genus Penicillium and genus Aspergillus [2]
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