DIFFERENT LENGTHS OF PRUNING IN VINE CULTIVARS CABERNET SAUVIGNON AND MERLOT IN TIKVESH WINE REGION

Abstract

Wine grape is cultivar that grows for many years, but every year in the vegetation period creates large number of winter fertile buds from which in the next vegetation new shoots will develop. To keep it’s shape, to plan it’s yield and growth and also the quality of the wine grape it’s necessary to make pruning every year until the start of the vegetation to remove all the unnecessary shoots that developed. Wine grape from the whole assortment in Republic of Macedonia takes place in 70% from the whole grape production.The research is focused on the possibility of using different ways of pruning to have the best results in the yield and quality of the ripped grape and also for introduction of machine pruning and machine harvest. The research is conducted on the wine grape varieties: Cabernet Sauvignon and Merlot. On the two researched grape varieties there are 4
variants on vine training from which one is Control. On the two researched variants and grape varieties, the percentage of developed shoots is calculated, potential fertility, number of clusters per vine and shoot, cluster mass per bud and variant, grape yield per vine and hectare, total sugars and total acids. Results from the research in 2016 for the grape yield per vine and per bud, yield per vine, chemical analysis for sugar content and total acids show that the best variant from the Cabernet Sauvignon is Variant 2, for the Merlot is Variant 3.