@article{article_374837, title={Some Physical, Mechanical and Ripening Properties of the Boğazkere Grape (Vitis vinifera L.) and Theirs Relationships}, journal={Tarım Makinaları Bilimi Dergisi}, volume={13}, pages={11–19}, year={2017}, author={Sessiz, Abdullah and Özdemir, Gültekin and Esgici, Reşat}, keywords={Grape,grape cane,cutting properties,cutting energy,engineering properties}, abstract={ In this study, some physical, mechanical and ripening properties of local variety Boğazkere grape and their relationships were determined depend on three different phenological stages and five cane internode (IN) diameters. This research was performed at commercial vineyard in Diyarbakır province, which is located in the southeastern part of Turkey. Cutting properties and energy values were measured by The Lloyd LRX plus materials testing machine. In addition to cutting properties of cane, grape berries’ include length, with, thickness, geometric mean diameter,  sphericity,  surface area, berry detachment force (BDF), berry weight (W), berry detachment force/weight (BDF/W) were determined. <o:p> </o:p> The mean length, width and thickness values of berries were found as 16.64 mm, 15.49 mm, and 15.42 mm, respectively. The arithmetic mean diameter, geometric mean diameter, surface area values were not changed statistically with phenological stages. <o:p> </o:p> There were found closely relationships between ripening and mechanical properties at different  phenological stages for grape berries. The ratio of BDF/W decreased with phenological stages. The BDF was decreased from 2.60 N to 2.13 N, the grape berries skin firmness decreased from 1.60 N to 0.93 N, while berries weight increased from 2.48 g to 2.76 g with harvesting stages. Total soluble solids content and pH values increased with phenological stages. Whereas the total acids were slight changed and reduced from 0.413 to 0.323 % with ripening stages. <o:p> </o:p> The phenological stages has not significant effect on the cutting properties of cane (P >0.05). However, cutting force were found highly correlated with the cane diameter, the significant differences were found among internodes diameter of grape canes at a 5 % probability level. While the maximum cutting force and energy were obtained at IN5 diameter as 600.92 N and 5.05 J, the minimum cutting force and energy were obtained at IN1 diameter as 289 N N and 1.52 J, respectively.  <o:p> </o:p> }, number={1}, publisher={Tarım Makinaları Derneği}