4. Conclusion
Blackberries are berry fruit species which gain importance gradually in our country and in the world. The studies to introduce the blackberry plant in cultivated plants, whose only wild species have been utilized for years, is an issue which has begun to be handled recently. Numerous adaptation experiments and studies on reclamation of species have been launched throughout the country and the increasing the production of blackberry plants has been the main goal of these studies. However, these efforts are not sufficient for quality products and high yield alone. The effects of various cultural activities such as pruning, irrigation, fertilization, fighting against diseases, cultivation systems applied in growing plant on quality and yield are known and the attempts on those segments have been going on for many years in many plant species. The recent introduction of blackberries into cultivated plants and the necessity of adaptation and breeding studies primarily have not yet allowed adequate research of other cultural practices. In this study on the jumbo blackberry species, the effects of the gibberellic acid and melatonin chemicals applied at different doses on fruit yield and quality were researched. This study is of great importance due to its being the first to investigate the effect of melatonin application through foils on the yield and quality of Jumbo blackberry species. These on-going studies will be very contributive to improve the conditions needed for the production and popularity of blackberry in the future.
