EN
Strong bee colonies rear more brood and produce more honey than weak colonies. The aim of the study was to determine the correlation between the strength of bee colonies, the amount of brood reared, and the amount of honey produced. Thirty bee colonies of different strength were observed. The amount of brood reared in each colony was determined one month before the beginning of the nectar flow from winter rape and the production of honey after the nectar flow period. A significant positive correlation was established between the strength of the bee colony and brood amount (r = 0.442), between colony strength and honey production (r = 0.456), and between brood amount and honey production (r = 0.568).