Browsing by Author "Okur, B"

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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.
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    QUALITY PARAMETERS OF VINEYARD IRRIGATION WATER IN A SEMI-ARID REGION: THE PLAIN OF ALASEHIR, TURKEY
    Yagmur, B; Aydin, S; Okur, B; Coban, H; Simsek, H
    Production of seedless raisins is extremely important in Aegean Region in Turkey. The Plain of Alasehir in province of Manisa in Aegean Region is extremely important for seedless raisin production since 25% of the seedless raisin has been grown in this area. The irrigation water samples were collected from 13 different water distribution locations in the Plain of Alasehir. Results showed that pH and EC (electrical conductivity) values were in a reasonable range except EC levels from two locations were slightly high. The vineyard irrigation water in the region was classified as type of C3S1. It was suggested that, the salt content might be monitored continuously since salinity might increase in the soil through the end of the irrigation season. The most common cations were Ca++ and Mg++, and anion was HCO3-. Trace elements and heavy metals were under the risk limits except Mn was high in three locations. Boron was high in nine sampling locations. Overall, irrigation waters in the Plain of Alasehir were suitable for vineyard irrigation as long as the contents of boron and salinity were continuously monitored.
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    Evaluation of soil and plant health associated with successive three-year sewage sludge field applications under semi-arid biodegradation condition
    Kayikcioglu, HH; Yener, H; Ongun, AR; Okur, B
    In order to assess the suitability of sludge application for maize (Zea mays L.) soil ecosystems, this study aimed to evaluate soil microbial properties over three consecutive years using treated municipal sewage sludge (TSS) amendment in the Typic Xerofluvent Mediterranean soils of Turkey. Soil microbial properties and biochemical activities significantly increased with increasing TSS amounts. Microbial biomass carbon peaked following amendment with 30 Mg ha(-1) a(-1) of TSS, while basal soil respiration was not significantly affected by TSS doses. Moreover, soil enzyme activity increased significantly with increasing TSS amounts. A significant increase in the grain yield of 7% and 9% was found with 10 and 20 Mg TSS ha(-1) a(-1) applications respectively, whereas a significant decrease of 5% was found with 30 Mg TSS ha(-1) a(-1). Our results suggest that if the goal is to achieve plant yield in the short-term, it seems that TSS application of 20 Mg ha(-1) a(-1) can be recommended as organic fertilizer without causing potential risks. On the other hand, if the primary aim is to ensure the sustainability of the soil organic matter, the use of TSS as organic soil conditioner at a rate of 30 Mg ha(-1) a(-1) can be recommended.