| 摘要 |
A method for forecasting the assessment of risk of the use of Trichogramma in agrocenoses of berry-fields includes settling the Trichogramma onto plants. Collection of diapausing eggs of the rose ugly-nest tortricid and Exapate congelatella is carried out by direct observations in the middle of summer and autumn, the level of infestation thereof with entomophages is determined. In spring in the period of reactivation caterpillars and pupae are collected, level of vital capacity, potential fertility, level of infestation by entomophages and disease pathogens, level of infection, complex hazard threshold are determined. |
