An open pollinated variety of oilseed sunflower (Helianthus annuus L.) was selected under conditions of absence of competition and under competitive conditions also. Selection was based on seed yields of individual plants established in a honeycomb design. Seeds of the selected plants, separately for each case, were bulked and sown next year in comparison to the check. Under conditions of absence of competition a seed yield increase of 26,0% compared to the check was obtained. Under competitive conditions seed yield increased only by 8,2%. lt is concluded that honeycomb selection at wide spacings was more effective in improving seed yield.