The research was conducted in order to determine the influence of pollen bees on the quantity of brood, honey and pollen at the time of flowering of Sophora japonica. The experiment was conducted on the apiary belonging to the Faculty of Agriculture of Belgrade in the period from 20 July to 10 August 1997/1999. The autochtonous bees breed Apis mellifera caraica Pollman was used in the experiment.

The medicinal plant common centaury (Centaurium umbellatum Gilib.) of the gentian family is highly valued in pharmacy for its favourable effect on problems of the digestive system. The aim of our research was to examine the contents of macro- and microelements in common centaury, honey, and a product based on honey and common centaury, so that common centaury can be more widely used together with honey as a food supplement.