Effects of different doses of nano technological foliar fertilizer and cluster thinning applications on quality characteristics of cv. syarh grape (V. vinifera L.)

This research was carried out in the private producer vineyard in the village of Karaevli in Tekirdag province in the development period of 2018. In the study, 12-year-old vines belonging to the Syrah grape variety grafted on 110R rootstock were used. In the experiment, 4 different doses (0, 750, 1500 and 2250 ppm) of nano-technological foliar fertilizers and 50% dilution were applied on the clusters. In the study, the effects of different doses of nano-technological foliar fertilizer and cluster thinning on the grape and cluster physical properties and quality characteristics of the Syrah grape variety were investigated. It was seen that applications used in study positively affected total phenolic compounds content, total anthocyanin content and antioxidant capacity of variety, especially. As a result of the research finding, it was determined that 1500 ppm + SSU application had remarkable effects on physical properties of grape and cluster and grape quality characteristics.