Effects of shading treatments on physical and chemical changes of 'Sultani Çekirdeksiz' berries

M. Kesgin, A. Yağci, R. Cangi
During the recent years, the usage of covering and shading materials has become more common in order to protect table grapes against to adverse effects of climate conditions and to extend harvesting period. It was aimed to determine the effects of shading treatments on physical and chemical changes of 'Sultani Çekirdeksiz' berries during 2010-2012. There were 4 treatments in the study; control, 35, 55, and 75% shading materials and vines were covered in veraison period with all these shading materials. Also all cultural practices were applied according to the table grape production. The experimental design was randomized block with three replications and there were 6 vines in each replication. The berry weight, TSS, pH, berry width, berry length values were measured every week since veraison period (during 7 week). According to the average of the 3 years; when the values taken in the first week are accepted as the starting point, the increment in TSS, berry weight, berry width and berry length is slowed down as the shading ratio increases. In addition, TSS values are increased in harvesting period compared to the first week as 73, 53, 48 and 43% with the treatments of control, 35, 55 and 75% shading ratios respectively. Also it has been determined that as the shading ratio increases, the ripening speed slows down and the harvesting period is delayed.
Kesgin, M., Yağci, A. and Cangi, R. (2020). Effects of shading treatments on physical and chemical changes of 'Sultani Çekirdeksiz' berries. Acta Hortic. 1276, 93-98
DOI: 10.17660/ActaHortic.2020.1276.13
https://doi.org/10.17660/ActaHortic.2020.1276.13
Sultana, table grape, vine covering, late harvest
English

Acta Horticulturae