Antagonistic microbes (streptomycetes and bacilli) isolated from different soil types

The soils of forest, meadow, and urban ecosystems were analyzed for the presence of antagonistically active streptomycetes and bacilli in their microbial complex. A collection of streptomycetes and bacilli (1031 isolates) indifferent soil types was created. The maximal number of cultures producing antibiotics was isolated from soddy-podzolic soil, chernozem, soddy meadow soil, and mountain soddy soil. The strains were found which actively suppressed the growth of some Gram-positive and Gram-negative bacteria and phytopathogenic fungi causing diseases of agricultural plants. The model was developed to evaluate the insecticide activity of isolates, and the strains were found exerting a lethal effect on harmful insects: cockroaches and crickets, which are the analogs of the locust.