EN
The aim of this work was to study the efficiency of selected fungicides for the protection of winter oilseed rape (Brassica napus) against Leptosphaeria maculans and L. biglobosa, the causes of phoma leaf spotting and stem canker. The protection at the time following mass ascospore release showed better effects than the same treatment used 10 days after the optimal spraying time. The most efficient fungicides were based on triazoles such as metconazole, protioconazole, tebuconazole and flusilazole. It was demonstrated that protioconazole mixed with tebuconazole and flusilazole with carbendazim were very active at both spray times.