Bahar, ElmanKorkutal, İlknurKabataş, İpek Ezgi2022-05-112022-05-1120171302-7050https://hdl.handle.net/20.500.11776/9537This research was conducted in Sarkoy district in Tekirdag province. Location of research plot was 40° 37' 49.98" N latitude and 27° 09' 28.00" E in longitude, with 41m altitude, in 2013 vegetation period. Experimental research design was completely randomized block in 4 blocks. Leaf water potential and cluster thinning applications were performed in order to determine cluster and berry characteristics. Four different levels of leaf water potentials (?leaf); Control ?pd n?(-0,3; -0,5MPa], ?pd n?(-0,3; -0,6MPa] and ?pd n?(-0,3; -0,7MPa] and two levels of cluster thinning applications (CTA); non cluster thinning (NCT) and 50% cluster thinning (50% CT) were performed in this research. Cluster characteristics (cluster lenght, width, weight, volume, berry number in cluster) and berry characteristics (berry fresh and dry weight, % dry weight, berry volume, berry density, berry skin area calculation, berry skin area / berry volume calculation) were investigated. ?pd n?(-0,3; -0,5MPa] application resulted in highest cluster weight and cluster width; but the lowest in berry dry weight. On the other hand ?pd n?(-0,3; -0,7MPa] application increased the yield and quality values. Control application decreased yield and quality values. Cluster thinning application did not affect the leaf water potential significantly. As a suggestion in cv. Sangiovese leaf water potential should be between n?(-0,2; -0,35MPa] in berry set-veraison stage and between n?(-0,3; -0,7MPa] in veraison-maturity stage in order to increase the berry sugar concentration (°Brix) 50 % cluster thinning applications should applied. © 2017 Namik Kemal University - Agricultural Faculty. All Rights Reserved.trinfo:eu-repo/semantics/closedAccessClusterCluster thinningGrape berryIrrigationLeaf water potentialSangioveseWater stressArticle1421381492-s2.0-85044721271Q3