Vilna V. Cruciferous bugs on spring oilseed rape and mustard in the Eastern part of the Forest Steppe region of Ukraine and improvement of the measures of their numbers restriction

Species composition of sucking pests of spring oilseed rape and mustard in the Eastern part of the Forest Steppe region of Ukraine is specified. It is defined 12 species of sucking pests of 3 orders and 4 families, among them 4 species are specialized and 8 species are polytrophic pests. For the first time in the Eastern part of the Forest Steppe region of Ukraine it was established dominant species of cruciferous bugs as well as seasonal dynamics of their number on crops of spring oilseed rape and mustard; it was identified major plants that reserve cruciferous plant bugs, it was found that in the spring imagoes of the cabbage bug first occupy cabbage seeds, then white mustard, grey mustard, spring oilseed rape, oil radish. Starting from the phenophase of spring oilseed rape rosette and mustard stems growth bugs imagoes migrate from cabbage seeds to spring oil cabbage cultures. It was determined that spring oilseed rape and mustard damaged by cruciferous bugs had less mass of 1000 seeds, laboratory germination and mass fraction of oil than intact plants. Priority settlement of cabbage seeds can be used to determine the bugs settling in the fields of spring oil cabbage cultures after leaving wintering sites by planting on all four sides of the field at least 5?7 cabbage plants. The expediency and efficiency of crop protection of spring oilseed rape and mustard from cabbage bugs by spraying with insecticide of system action in the phenophase of yellow bud are proved. Application of mineral fertilizers (N30P30K30) while growing seed material ensures the growth of profitability as compared to the crops that were not fertilized.