In the season 2013/14 we established semi-practical varietal trials with winter oilseed rape at four localities in Slovakia - PD Agrocoop Hul (district Nove Zamky), PPD Prasice (d. Topolcany) Agroracio Liptovsky Mikulas (d. Liptovsky Mikulas) and Blatne (d. Senec). We tested 31, in Blatne 12 cultivars of winter oilseed rape. The highest yield reached varieties: SY Saveo, DK Exstorm a ES Alegria (Blatne), Bonanza, Marathon a Rohan (Liptovsky Mikulas), Jenifer, Jumper, SY Cassidy, Hybrirock and Astronom (Hul and Prasice). Very good results achieved also Regis (best in Prasice), Rohan (fourth in Hul) and PT 211 (fifth in Hul).