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    Assessment of Water Stress Using Chlorophyll Readings and Leaf Water Content for Watermelon
    (Univ Namik Kemal, 2010) Demirel, K.; Genc, L.; Camoglu, G.; Asik, S.
    The objective of this study was to determine plant water stress using Chlorophyll Readings (ChRs) and Leaf Water Content (LWC) measurements for watermelon in the Canakkale region of western Turkey. ChRs and LWC were measured before (BI) and after irrigation (AI). Six different irrigation treatments (S-100, (control), S-80, S-60 S-40, S-20 and S-0 (non-irrigated)) were applied with drip irrigation. Growth stages were divided into three categories: (1) flowering (F), (2) fruit growth (FG) and (3) ripening and harvest (RH). ChRs and LWC for both irrigation treatments and all growing stages were calculated by means of ANOVA using SPSS for Windows statistical software. It was seen that ChRs and LWC decreased from S-100 to S-0 during growth period. The coefficient of determination (R-2) and linear equation between ChRs and LWC for F, FG and RH stages were found to be 0.751, 0.805 and 0.878, respectively. Result of this study has shown that LWC and ChRs measurements can be used to determine water stress especially F period and the beginning FG periods.
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    Öğe
    Closure to Determination of Crop Water Stress Index and Irrigation Timing on Olive Trees Using a Handheld Infrared Thermometer by Erhan Akkuzu, Unal Kaya, Gokhan Camoglu, Glay Pam Mengu, and Serafettin Asik
    (Asce-Amer Soc Civil Engineers, 2015) Akkuzu, E.; Kaya, U.; Camoglu, G.; Mengu, G. Pamuk; Asik, S.
    [Anstract Not Available]
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    Öğe
    Effect of Deficit Irrigation Regimes on Yield and Fruit Quality of Olive Trees (cv. Memecik) on the Aegean Coast of Turkey
    (Wiley, 2017) Kaya, U.; Gungor, F. Ozturk; Camoglu, G.; Akkuzu, E.; Asik, S.; Koseoglu, O.
    In this study, six different irrigation treatments were applied to an olive orchard using the drip irrigation method. Five of these were arranged according to 25% (S-0.25), 50% (S-0.50), 75% (S-0.75), 100% (S-1.00) and 125% (S-1.25) of the evaporation in 5days of a class A' evaporation pan, and one control (S-C) was arranged so as to bring the reducing moisture at a soil depth of 0-90cm to field capacity. Yield values were not affected by the irrigation treatment (p>0.05). In contrast, 100-fruit weight, pulp ratio, hardness moisture, oil, reducing sugar content and bitterness were affected by irrigation (p<0.05). Generally, an increase in the amount of irrigation water given in the study was accompanied by a fall in ripeness index values, a rise in moisture content, and a reduction in the oil content of fruit. The highest content of reducing sugar was obtained from S-0.25, generally being lower with increase in the water applied. The findings show that application of 25% of the evaporation of a class A' evaporation pan (treatment S-0.25) can be recommended for cv. Memecik. Application of this recommendation can achieve a 72% saving in water and make a significant contribution to the conservation of limited water resources. Copyright (c) 2017 John Wiley & Sons, Ltd.