| Summary: | Since pollen beetle, M. aeneus, is usually controlled by insecticides, the efficacy of several
compounds with different modes of action against adult beetles was studied in a threeyear
field study. The selected insecticides were: three pyrethroids (lambda-cyhalothrin,
alpha-cypermethrin and bifenthrin), an oganophosphate (pirimiphos-methyl), a combination
of an organophosphate and a pyrethroid (chlorpyrifos + cypermethrin) and a neonicotinoid
(thiacloprid). The insecticides were applied at label rates to winter rapeseed crops
at the moment of visible but still closed flower buds (BBCH 55-57). In all experiments, the
efficacy of pyrethroids and the organophosphate ranged from 90-100%, while the efficacy
of the neonicotinoid was 85-95%. Therefore, they can be recommended for control of pollen
beetle in Serbia.
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