EFICIENȚA SUBSTANȚELOR BIOLOGIC ACTIVE CU PROPRIETĂȚI CAIROMONALE ASUPRA INDICILOR BIOLOGICI A ENTOMOFAGULUI TRICHOGRAMMA EVANESCENS WESTW

Abstract

The research conducted during the years 2020-2023 has demonstrated that in the experimental variant (in the presence of biologically active substances), the prolificacy of Trichogramma evanescens females increased by approximately 1.4-1.5 times compared to the prolificacy of females in the control variant. As a result, there is a quantitative saving of Sitotroga cerealella eggs in the reproduction process by 20-25%, and of the elite entomophage Trichogramma spp. by about 15-20%. The searching capacity of the entomophageTrichogramma evanescens, as a result of the influence of biologically active substances with kairomonal properties, showed results approximately 1.6 times higher in the experimental variant than in the control, indicating that females in the control move more slowly. In the case of experiments conducted under field conditions, the action of kairomonal substances was confirmed to significantly increase the rate of parasitized eggs compared to the control variant (Td=2.5-4.8 > 1.96=T0.05). Biologically active substances play a crucial role in the biological protection of plants.