Kalkişim, Özgün

This study was performed in 2010 and 2011 in order to determine some pomological and morphological properties of 15 different mulberry types growing in the ecological conditions of Gümüşhane province. From chosen types, fruit and leaf samples were collected and analyzed during their growing season for the period of two years. By the end of the study, the following highest values were observed: fruit weight 27.30 g, fruit width (resp. height) 15.62 mm (resp. 30.32 mm), leaf width (resp. height) 100.84 mm (resp. 130.02 mm), leaf stalk length 50.94 mm, Brix 23.28%, pH 6.20, titratable acidity 0.20, invert sugar 20.57, sucrose 1.46 and total sugar 22.02 g/100 g. As a result of the study, knowing the fact that mulberry is an important raw material in the continuously growing dried fruit roll-up industry, it is concluded that the number of promising mulberry types with the finest properties, should be increased and their cultivation should be popularized.

Kalkişim, Özgün

Antifungal activity of different parts (fruit and leaf) of Cornus mas L. (Cornecea), Morus nigra L. (Moraceae) and Prunus laurocerasus L. (Rosaceae) methanol extracts has been tested against walnut anthracnose. Agar dilution method has been used in antifungal activity studies. A standard fungicide (80% Maneb; Hektas Group) was used in order to compare the herbal extracts. The highest antifungal effect was observed in the leaf extracts of C. mas and M. nigra for which mycelium growth inhibition ratios observed were 67.95% and 60.04%, respectively. Different antifungal effect ratios have been determined for other plant extracts used. Also, the effect of Gnomonia leptostyla disease on walnut yield was examined for three different types of walnut trees. According to these results, it has been concluded that walnut anthracnose disease has an effect on the yield.

Kalkişim, Özgün; Balik, Hüseyin Irfan

This study was carried out between Çarşi{dotless}başi{dotless}/Trabzon and Piraziz/Giresun region which is assumed to be the best ecology for Tombul hazelnut cultivation. Visual pre-selection was performed in the region and the clones that may exhibit different characteristics were detected and marked. Later fruit samples were taken from those clones at the time of harvest and the superior clones were determined as a result of the examinations performed on the fruits. The efficiency and fruit features were analyzed for selected Tombul hazelnut clones. The study showed that the differences between efficiency, yield, kernel weight, fruit weight, shell thickness and bundle fruit number were significant (P<0.05) among Tombul hazelnut clones. On the other hand, differences of navel cavity, splitting fruit ratio, whitening and healthy kernel ratio among clones were not significant. The highest and lowest values of efficiency were 13.45 and 168.47 g/cm2, respectively, for clones 61V11 and 28M16, yield was 45.11-54.07%, respectively, for clones 61V11 and 28M17, kernel weight 0.89-1.19 g, respectively, for clones 61V11 and 28G16, fruit weight 1.67-2.19 g, respectively, for clones 61B08 and 28ES04, shell thickness 0.89-1.10 mm, respectively, for clones 28G08 and 28ES04 and bundle fruit number 2.15-4.38, respectively, for clones 61B08 and 28EY12. The clones 28ES01 (53.86), 61Ç07 (53,88%), 61V25 (53.90%) and 28M17 (54.07%) had more superior characteristics in terms of yield compared to others.