INFLUENCE OF VINE LOADS WITH FERTILE BUDS ON GRAPE YIELD AND QUALITY OF VARIETY ZIZAK IN PODGORICA VINEYARD AREA

Leaf size and leaf area, movement and yield of buds, shoot growth, yield, grape quality, etc. largely depend on the optimal load of vines with fertile buds (Pejović, 1982). [...]in each vineyard region, it is necessary to establish the optimal load of vines with fertile buds for all varieties and cultivation forms of vines, in accordance with the technology of grape production, which will give the most favourable production results. (2015) state that grapes of Žižak variety are used in certain areas of Boka for the production of Prošek dessert wine.The aim of this research was to examine the influence of different load of vines with fertile buds on some biological and technological characteristics of autochthonous white wine variety Žižak. During the two-year study, the percentage of emerged and fertile shoots, potential, relative and absolute fertility rate, grape yield (kg/vine), bunch weight (g), and sugar (%) and acid (g/l) content in must were examined. - The percentage of total developed shoots per vine was determined from the ratio of the number of developed shoots and the number of buds left with pruning, -The percentage of fertile shoots per vine was determined from the ratio of the number of fertile and the number of total developed shoots, -The average number of flowers per bud (potential yield rate) was obtained from the ratio of the total number of flowers and the number of buds left with pruning, -The average number of flowers per shoot was determined from the ratio of the total number of flowers and the number of developed shoots (relative fertility rate), -The average number of flowers per fertile shoot (fertility rate) was obtained from the ratio of the total number of flowers and the number of fertile shoots, -The yield of grapes was obtained by measuring harvested grapes, and the bunch weight was determined from the ratio of the yield from ten vines and the number of bunches. -