Analysis of winter oilseed rape damages caused by Brassicogethes aeneus (Fabricius, 1775) in various regions of Poland, in 2009–2019

A significant problem in the cultivation of plants, including winter oilseed rape in Poland is the increasing threat from pests, the appearance of new species and the increasing their activity, especially in the context of the observed climate changes. One of them is common across the country with varying degrees of pollen beetle – Brassicogethes aeneus (F.). The effect of the pest’s feeding is a weak or no silica formation, and thus an unfavorable effect on the obtained seed yield. The aim of the study was to analyze the damage of winter oilseed rape caused by pollen beetle in various regions of Poland in the years 2009–2019. The summary of the monitoring results of the pollen beetle showed the changing intensity of this pest occurrence over the selected years.