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Öğe Comparison of yield, varieties at Cukurova(Int Soc Horticultural Science, 1997) Durgac, C; Kaska, NIn Turkey, apricot (Prunus armeniaca L.) is among the stone fruits whose production has markedly increased in recent years. The most important problem of culture is spring frosts. The Mediterranean coasts of Turkey from Samandag to Finike ate safe from late spring frosts and have a suitable ecology for early apricot growing. Since the winters in this area are rather warm, the chilling requirements of apricot trees are assumed to be short. The objective of this work was to select the most suitable high yielding, early ripening and good quality apricot varieties adaptable ecological conditions of Adana. The phenological and pomological characteristics of the cultivars were determined. 01-K-15, Bebeco, Perfection, Rouge de Sernhac, Cafona and 07-K-09 were the highest yielding cultivars, Early Kishinewski, Bebeco, 01-K-15 and Rouge de Sernhac bore the largest fruits and Silistre Rona and Perfection were the most precocious cultivars among those studied ones.Öğe Effect of protected cultivation on the precocity, yield and fruit quality in loquat(Elsevier Science Bv, 2005) Polat, AA; Durgac, C; Caliskan, OThe advantages of the high density and protected cultivation over open field were investigated in three loquat cultivars. Both of these methods are new and have not been previously studied in Turkey. The study was conducted with Gold Nugget, Hafif Cukurgobek, and Sayda cultivars, planted at high-density with planting spaces of 3 m x 3 m in May 1997. The experiments for cultivation were done in greenhouses where the side height was 2.5 m and the highest point was 4.0 m. Phenological variables such as first blossoming, full bloom, end of bloom and harvest time and pomological variables such as fruit and seed weight, fruit dimension, seed number/fruit, and acidity were determined. The trunk diameter, 10 cm above the bud union, was also recorded each year during the study. The total above ground tree canopy volume was calculated from height and width measurements. The productivity parameters including yield/plant, yield/hectare, cumulative production/plant, cumulative production/hectare and yield/unit trunk cross-sectional area and yield/unit of canopy volume were calculated. The results indicated that protected cultivation caused earliness of 13-20 days when compared to open field. The mean yield was higher in protected cultivation than the open field for both yield/tree and yield/ha. Conversely, the mean yield was higher in open field than protected cultivation for yield/unit trunk cross-sectional area and yield/unit of canopy volume of trees. Pomological quality of the fruits was higher in the open field than protected cultivation. (c) 2004 Elsevier B.V. All rights reserved.Öğe Effects of different planting densities on the vegetative growth, yield and fruit quality of loquat(International Society Horticultural Science, 2004) Polat, AA; Durgac, C; Kamiloglu, O; Caliskan, OThe Turkish Mediterranean region has the most suitable ecological conditions for growing loquat. In 1999, 97% of total loquat production of Turkey was from the coastal zone of the Mediterranean region. This study was conducted in Hatay, which is located in the eastern Mediterranean coast of Turkey, and was aimed to research the advantages of high density over conventional planting densities. Gold Nugget, Sayda and Hafif Cukurgobek loquat cultivars were propagated by budding at the Horticulture Department, Agriculture Faculty, Mustafa Kemal University, Hatay, Turkey, in 1996. These young trees were planted at three different planting distances (3x3m, 3x6 m and 6x6 m) and pruned to an open-centre system in an experimental orchard in May 1997. Phenological observations, pornological characteristics, yield per tree and per unit area were determined. With increasing planting density, yields per tree decreased while cumulative yields per hectare increased. According to the three year data, the highest cumulative yield (yield/tree and yield/hectare) was obtained from Hafif Cukurgobek with 9.15 kg/tree and 1882 kg/hectare, respectively. The highest cumulative yield per unit was obtained with the 3x3 m spacing (7165kg/ha), followed by 3x6 m and 6x6 m with 4056 kg/ha and 2200 kg/ha, respectively.Öğe Investigation on the adaptation of some low-chill apricot cultivars to Kirikhan (Turkey) ecological conditions(International Society Horticultural Science, 2004) Polat, AA; Durgac, C; Kamiloglu, O; Caliskan, OThis research was carried out between 1996 and 2001 at the experimental apricot orchard of the Horticulture Department, Agriculture Faculty, Mustafa Kemal University, Hatay, Kirikhan/Turkey. In the experiment, five low chill cultivars of the apricot (Priana, Feriana, Canino, Precoce de Colomer, Precoce de Tyrinthe) were used as materials. In these cultivars, certain phenological and pomological characteristics such as flowering period, average fruit weight, fruit dimensions, flesh/seed ratio, acidity and total soluble solids (TSS) were examined. In addition, the vegetative growth of the cultivars was evaluated by measuring the trunk diameters and lengths of annual shoots. Over six years, the highest average fruit weight was obtained from 'Precoce de Tyrinthe' (31.92 g), whereas the weight of 'Precoce de Colomer's' fruits was the lowest (20.52 g). The flesh/seed ratio was the highest in the 'Precoce de Tyrinthe'. 'Priana' had the highest TSS content with 15.10%, whereas 'Precoce de Tyrinthe' had the lowest TSS value with 10.33%. 'Priana' ripened the earliest (20 May), while 'Precoce de Colomer' was the latest ripening cv. (3-5 June).
