POPULATION DYNAMICS AND BIOECOLOGY OF ENTOMOPHAGES OF PEA PESTS (PISUM SATIVUM L.) IN THE AKMOLA REGION

Abstract

For the conditions of the Akmola region, complexes of entomophagous dominants targeting Sitona bugs and pea aphids have been identified. Population fluctuations and biological characteristics were studied in relation to the impact of environmental conditions, and criteria for the effectiveness of entomophages were substantiated.

The dominant, most effective groups of entomophages from among small ground beetles have been identified, which are crucial in suppressing the number of Sitona bugs (Bembidion femoratum, B. quadrimaculatum, B. lampros, Microlestes minutulus). The promising entomophages of pea aphids include species that are ecologically plastic, numerous and effective in the triotroph system throughout the season in various tiers of peas in the research area (species of the Syrphidae families: Syrphus ribesii L., S. Corollae R., S. balteatus Deg., Sphaerophoha sp.; Coccinellidae: Coccinella septempunctata L., With quinguepunctata L., Propylaea quatuordecinpunctata L., Hippodamia tredecimpunctata L, Adonia variegata Goeze., C. trifasciata L., Chrysopidae: Chrysopa carnea Steph., Ch. semptempunctata). The seasonal dynamics and bioecology of phytophages and entomophages have been studied. Three species of Coccinellidae entomophages of pea aphids and four species of small ground beetles - entomophages of Sitona bugs for peas in the region have been identified. The criteria for the effectiveness of the natural complex of entomophages of pea pests of the Akmola region have been determined and substantiated.