The peculiarities of the beginning of the stage of reproductive growth, industrial fruiting, the yield of twenty highbush blueberries, and three half-highbush blueberry cultivars introduced in Belarus are shown based on the results of multi-year stationary research. At the age of 4 blueberries enter the reproductive growth stage and at the age of 6 they enter into the stage of industrial fruiting. ‘Bluecrop’, ‘Bluetta’, ‘Denise Blue’, ‘Duke’, ‘Earliblue’, ‘Elizabeth’, ‘Jersey’, ‘Northblue’, ‘Northcountry’, ‘Northland’, ‘Patriot’ and ‘Weymouth’ cultivars have a higher berry yield. The yield of blueberry cultivars varies from year to year of fruiting. ‘Blueray’, ‘Northland’, and ‘Jersey’ have shown regular fruiting. The changes in blueberry fruiting in Belarus were caused by flower bud mortality in winter and/or drought during their fruit set.
