Browsing by Author "Engindeniz, S"

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    Energy and cost analysis of sultana grape growing: A case study of Manisa, west Turkey
    Koctürk, OM; Engindeniz, S
    Turkey, located on the most suitable place on earth for vinegrowing, has a remarkably old and essential vinegrowing history as well as being the centre of grape-vine gene. Turkey's share in grape production area and world production in 2007 were 7 and 6%, respectively. The purpose of this study is to analyse the use of energy in sultana grape production in Manisa, a significant production area in Turkey and to determine the variable costs and gross margin of sultana grapes production. For this purpose, 48 farmers were selected and their 2008 growing season records examined. Winegrowing (viticulture and enology) is a global industry, representing a significant demand on the world's resources, including fossil fuels. Nowadays, energy use in agricultural production in Turkey is becoming more intensive due to the use of energy-intensive inputs. The total energy input necessary for sultana grape production was 37,488.00 MJ/ha. The research results indicated that the total energy input used for grape production was mainly dependent on non-renewable energy forms. The values of gross product and total variable costs were US$ 6,039.00 and US$ 2,847.23, respectively. Therefore, gross margin was calculated to be US$ 3,191.77.
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    Organic cucumber growing in the greenhouse
    Tüzel, Y; Gül, A; Karacanci, A; Anac, D; Okur, B; Ongun, AR; Yoldas, Z; Madanlar, N; Gumus, M; Tüzel, IH; Engindeniz, S
    This study was conducted in order to elucidate the problems in organic greenhouse cucumber growing. Two dosages of farmyard manure (15 or 30 tons ha(-1)) were tested during autumn and spring seasons of 2003 and 2004. Fruit samples were analyzed for their quality parameters (color and total dry matter content of fruits and total soluble solids, EC and pH of fruit juice) at three weeks intervals during the harvest period. Generally, there were no significant differences with respect to fruit properties between manure dosages in both growing seasons. Higher yield was in the farmyard manure application of 15 ton ha(-1) (5.92 kg/m(2)) compared to the application of 30 ton ha(-1) (3.95 kg/m(2)) in autumn season, whereas higher total yield (17.84 kg/m(2)) was obtained from the plants grown by the application of 30 ton ha(-1) farmyard manure in spring, but the difference between treatments was not statistically significant.