Abstract
In order to collect natural substrates and search for dead insects with signs of bacteriosis, route surveys were conducted in forests and natural parks of various regions of Kazakhstan. A total of 530 samples were collected, of which 498 samples were examined. 30 Bt isolates were isolated into pure culture. The isolated isolates, according to their physiological and biochemical properties, corresponded to Bacillus thuringiensis and were classified into three serotypes: 3a3b3c, subspecies Bt kurstaki; H4ab – subspecies Bt sotto and 31 serotypes of the subspecies Bt toguchini. The biological efficacy of 30 bacterial strains was evaluated on 8 species of pests from the Lepidoptera order
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References
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