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The effect of wetted soil area on trunk growth, yield, and fruit quality in drip-irrigated Kütahya sour cherry (Prunus cerasus L.) trees graft ed on mahaleb (Prunus mahaleb L.) seedlings was investigated over 3 seasons in a semiarid zone of Central Anatolia, Turkey | Research Article Turk J Agric For 36 (2012) 439-450 © TÜBİTAK doi:10.3906/tar-1109-15 Effect of wetted soil area on trunk growth, yield, and fruit quality of drip-irrigated sour cherry trees Osman YILDIRIM1, Hatice DUMANOĞLU2,*, Nurdan TUNA GÜNEŞ2, Murat YILDIRIM3, Ahmet AYGÜN4, Bekir ŞAN5 1 Department of Farm Structures and Irrigation, Faculty of Agriculture, Ankara University, 06110 Ankara - TURKEY 2 Department of Horticulture, Faculty of Agriculture, Ankara University, 06110 Ankara - TURKEY 3 Department of Farm Structures and Irrigation, Faculty of Agriculture, Çanakkale Onsekiz Mart University, Çanakkale - TURKEY 4 Department of Horticulture, Faculty of Agriculture, Ordu University, Ordu - TURKEY 5 Department of Horticulture, Faculty of Agriculture, Süleyman Demirel University, Isparta - TURKEY Received: 12.09.2011 ● Accepted: 30.01.2012 Abstract: The effect of wetted soil area on trunk growth, yield, and fruit quality in drip-irrigated Kütahya sour cherry (Prunus cerasus L.) trees grafted on mahaleb (Prunus mahaleb L.) seedlings was investigated over 3 seasons in a semiarid zone of Central Anatolia, Turkey. Percentages of wetted soil area ranging from 8.8% to 35.6% were obtained by applying 7 treatments consisting of 1 or 2 lateral drip lines per tree row and various dripper numbers per tree. Adequate irrigation was applied to all treatments based on daily evapotranspiration values estimated by the FAO-modified PenmanMonteith equation. The highest yield was generally obtained at percentages of wetted soil area higher than 30%; this was provided by placing 2 lateral lines (1 m apart) per tree row with continual drippers spaced between 0.50 m and 1.00 m. The percentage of wetted soil area did not significantly affect trunk growth and fruit weight in addition to fruit attributes such as redness index of fruit skin color, fruit juice content, soluble solids content, titratable acidity, or pH, in general. Key words: Drip irrigation, fruit attributes,
