EN
The aim of the research was to identify the extent of winter triticale colonization by most frequently occurring pests. The object of investigation were winter triticale varieties recommended for the cultivation each year in Wielkopolskie voivodeship, based on the List of Recommended Varieties (LZO) on the territory of voivodeships. Among the recommended varieties of winter triticale the best resistance to the colonization and injuries by phytophages (beetles and larvae of Oulema, Sitobion avenae, Agromyza spp., Cerodontha spp.) have the varieties: Witon and Pawo. They are somewhat more susceptible to colonizing by Eurygaster sp. and Aelia sp. Levels of nitrogen fertilization have a significant influence on the extent of colonization by agrophages, and less significant influence on caused damage, because of a high influence of weather conditions and occurring beneficial entomofauna.