Determination of the Effects of Different Winter and Summer Pruning Practices on Yield and Quality of Yalova Incisi Grape Variety

This research work has been conducted in the trail area of the 'Research Vineyard of Table Grape Varieties' situated in 'COMU Dardanos Campus' in the years 2012 and 2013 in order to determine the effects of different winter and summer pruning practices on the yield and quality of the grape variety called as „Yalova Incisi‟. This grape variety was used as material in the research work. EB (early pruning), EB+TS (early pruning+cluster thinning), EB+TS+SS (early pruning+cluster thinning+bunch thinning), NTB (GYSSB) (pruning on normal date) (practice of leaving the secondary shoots of the previous year), NTB+NDKA(K) {(pruning on normal date+normal level axillary shoot removal (control)}, NTB+YDKB (pruning on normal date+high level axillary shoot removal), GB (late pruning), and GB+SUB (late pruning+leaving shoots long) applications were carried out on this grape variety along with all other cultural practices being executed into a standard manner. Considering all results together, the thinning practices such as EB+TS and EB+TS+SS have been found recommendable for acquiring early and high–quality crop yields in those regions of our country where early spring frosts are not considered as dominant. By applying NTB+YDKB practice, the increases both in the average yield and quality, and ripeness of grapes were quite satisfactory resulting to the increase in leaf size and vine stock potential. On the other hand, overall ripening of grapes resulting by the increase found in leaf size and vine stock potential after the application of GB+SUB practice. An early and quality yield production of table grape variety has been aimed to obtain after harvesting. It would be consider that predating awakening by early pruning, and reduction of the heavy crop bearing by thinning the bunches and clusters in combination with the restriction of axillary shoot removal by laying down the summer shoots on second phase shoot tying cords longitudinally produce a satisfactory result and production.