Abstract
Pollen beetle (Meligethes aeneus F.) (PB) causes very serious problems in oilseed rape (Brassica napus var. oleifera L.) cultivations in Poland and other European countries. Pyrethroid insecticides are the most frequently used type for controlling PB in Poland. This chemical group has been used in Poland since the beginning of the 1980’s and its strong selection pressure on PB resulted in some level of resistance of this pest to many active substances. The aim of this investigation was to analyze, with the use of synergists, the main mechanisms responsible for resistance of PB to pyrethroids. The results indicate the main resistance factor in Polish PB populations to be monooxygenase enzymes.
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