EN
The aim of this study is monitoring the species composition of Ceutorhynchus spp. and Baris spp. beetles as well as establishment of harmfulness of dominant species occurring on brassicae vegetable crops (cabbage, cauliflower, kohlrabi). The results of performed ecological studies (dynamic of occurrence, agricultural technology, plant tolerance to damage) will be used to prepare plant protection programmes. The best results of plant protection obtained by spraying of plants after occurring of beetles on the plants.