Yazar "Serbes, Z. A." seçeneğine göre listele

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    TEMPERATURE AND PRECIPITATION PROJECTIONS UNDER AR4 SCENARIOS: THE CASE OF KUCUK MENDERES BASIN, TURKEY
    (Scibulcom Ltd, 2019) Serbes, Z. A.; Yildirim, T.; Mengu, G. P.; Akkuzu, E.; Asik, S.; Okkan, U.
    In the study, downscaling models based on artificial neural networks were established for monthly average and maximum temperature and monthly total precipitation projections of Seferihisar, Selcuk and Odemis meteorological stations in the basin. In the models, NCEP/NCAR re-analysis variables were used as predictors. The downscaling models calibrated with the optimum predictors convert the coarse resolution results of both reference period (20C3M; 1981-2010) and future period (A2, A 1B and B1; 2021-2100) scenarios of ECHAM5 climate model to the station scale temperature and rainfall forecasts. Corrections of biases in the forecasts are achieved by using cumulative distribution functions. According to the A2, A1B and B1 scenarios, the mean of monthly average temperatures of 2021-2100 period could increase by 3.2, 3.5 and 2.8 degrees C, respectively and the mean of monthly maximum temperatures of 2021-2100 period could increase by 1.6, 2.1 and 1.1 degrees C, respectively, the mean of annual total precipitation could decrease by 31.6, 42.9 and 30.2%, respectively over study region. Under these possible impacts, it is expected that the average net irrigation water demand and soil salinity will increase, water supply will decrease. Under these stressed conditions, it has to be changed cropping pattern of the basin.
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    Utilization of Deficit Irrigation Programs to Improve Water Management with Leaching Limitations
    (Int Soc Horticultural Science, 2012) Tuzel, I. H.; Tuzel, Y.; Oztekin, G. B.; Tunali, U.; Meric, M. K.; Serbes, Z. A.; Kittas, C; Katsoulas, N; Bartzanas, T
    This study was carried out during the summer season of 2009 in greenhouse cucumber production at farmer condition in Izmir-Turkey. Two consecutive short cycle crop production was realized. A full irrigation (no stress) and two deficit irrigation treatments in which soil water content was allowed to be depleted to 40% (Deficit 1) and 60% (Deficit 2) of the available water content in the plant root zone, were compared with the local farmer's practice. According to the results, total yield was the highest in Full irrigation treatment followed by Farmer's treatment. Recorded total amount of irrigation water were 653 mm for Full Irrigation, 557 mm for Deficit 1, 445 mm for Deficit 2 and 699 mm for Farmer's treatments. During the automated irrigation period in whole growing season, drainage water was only received from Full irrigation (11 mm) and Farmer's treatments (89 mm). The Water Use Efficiency based on yield and irrigation water applied was the highest in Full irrigation (53.0 kg m(-3)) whereas it was the lowest in Farmer's treatment (45.0 kg m(-3)). Calculated average water-saving ratio in controlled irrigation treatments in comparison with farmer practice showed that it could be obtained 15, 14 and 6% water saving with Full irrigation, Deficit 1 and Deficit 2, respectively.