Akademik Veri Yönetim Sistemi
APPLIED ECOLOGY AND ENVIRONMENTAL RESEARCH, cilt.16, sa.5, ss.7191-7202, 2018 (SCI-Expanded)
Aster flowers belong to the Asteraceae family which has approximately 1.000 genera, and a number of species approaching 25.000. It is the largest family of the flowering plants and has spread to almost every region of the world, except for Antarctica. Considering the relatively low number of studies in the literature regarding the subject, this study was conducted to determine the shading requirements of the Dahlia spp. The experimental tests were conducted in the facilities of the "Agricultural Applications and Research Directorate" of Gaziosmanpasa University in the city of Tokat. Observations and measurements were made regarding the yield, flower diameter, plant height, plant stem diameter, pedicle length, pedicle width, number of buds, bud diameter, and lifetime-in-pot properties of the Le Castel, Seattle, Babylon Purple, and Gloriosa genera of the Dahlia spp. The results obtained indicate that the tested shading practices (35% and 55%) have resulted in increased performances compared to the control group in terms of yield and quality. Between the genera, Le Castel genus has given better results compared to others in terms of yield in both 35% and 55% shading. In pedicle length, Babylon Purple genus has given better results with 35% shading, while Gloriosa was the best in that regard with 55% shading. For the flower diameter property, the best results (249.05 mm) were obtained in the third measurement by Babylon Purple with 35% shading practice. As a result, the difference between plant diameters of the genera under the shading practices were found to be statistically significant, and that 35% shading practice was ideal for all the genera tested.