The research has undergone a comparative study of 8 raspberry and 11 blackberry cultivars in competition culture and intensive cropping system. Their purpose of this study is the evolution of the main vegetation and fructification phenophases; vegetative growths (bush height, size, length of annual growth) of raspberry and blackberry cultivars; fruit production per plant, biometric characteristics of fruit; dry substance content and establishing a crop variety suitable for Bacau area. The recommended cultivars for nursery breeding are raspberry cultivars September (1.7 kg/plant), Laxton 410 (1.6 kg/plant), Rubin Bulgarski (1.65 kg/plant) and blackberry cultivars Evergreen (2.65 kg/plant), Arkansas 635 and Arkansas 537 (1.56 kg/plant).