TY - JOUR TT - The Effects of Different Irrigation Levels on the Yield and Physical Properties of Lettuce Cultivars (Lactuca sativa var.campania) AU - Yıldırım, Murat AU - Bahar, Erdem AU - Demirel, Kürşad PY - 2015 DA - June JF - ÇOMÜ Ziraat Fakültesi Dergisi JO - ÇOMÜ Ziraat Fakültesi Dergisi PB - Çanakkale Onsekiz Mart University WT - DergiPark SN - 2147-8384 SP - 29 EP - 34 VL - 3 IS - 1 KW - Marul KW - Damla sulama KW - Bitki su tüketimi KW - Class-A pan KW - Çanakkale KW - Sera N2 - This study was carried out to investigate the effects of different water levels on the yield and physical properties of Lettuce cultivars (Lactuca Sativa var.campania), grown in unheated greenhouse at the research center of Canakkale Onsekiz Mart University in 2011and 2012, in Turkey. The research was designed to randomised coplete block design. The amount of irrigation water was determined through measuring evaporation from Class–A pan and Crop–pan coefficients (Kcp) were 0.25, 0.50, 0.75, 1.0 and 1.25.Therefore, the level of irrigation water in treatments was arranged according to the coefficients of Kcp, as follows; 25% (I0.25), 50% (I0.50) , 75% (I0.75) , 100% (I1.00) , 125% (I1.25) . Two crop production was carried out during winter time. In first growing period, the amount of irrigation water applied changed from 15 mm to 75 mm and in the second production period, it was from 9 to 45 mm, and in the first and second growing period, evapotranspiration was between 88 mm and 115 mm and from 56 to 79 mm, respectively. The increment of the amount of irrigation water has the positive effect on the yield, and it fluctuated the yield, in turn, between 2239 and 3742 kg/da –1 in two growing periods. In both growing periods, the highest irrigation water in teratments of I1.00 and I1.25 increased the yield of lettuce and also leaf area was within the highest rank group as an a in these treatments, and other treatments (I0.25, I0.50 and I0.75) took place in second group as b. Among groups, while having significant differences in canopy diameter there was no differences in canopy height. Class–A pan can be used in irrigation water management successfully and to use 1.25 for Kcp for lettuce in an unheated greenhouse gives the highest yield. Hence, this result can be considered as a strategy for water management in lettuce grown in an unheated greenhouse CR - Acar, B., Paksoy, M., Türkmen, Ö., Seymen, M., 2008. Irrigation and Nitrogen Level Affect Lettuce Yield in Greenhouse Condition. African Journal of Biotechnology. 7 (24): 4450–4453. CR - Allen, R.G., Pereira, L.S., Raes, D., Smith, M., 1998. Crop Evapotranspiration–Guidelines for Computing Crop Water Requirements–FAO Irrigation and Drainage Papers 56. FAO, Rome, İtaly. pp. 328. CR - Bozkurt, S., Mansuroğlu, G.S., Kara, M., Önder, S., 2009. Responses of Lettuce to Irrigation Levels and Nitrogen Forms . African Journal of Agricultural Research. 4 (11): 1171–1177. CR - Çebi, Ü., Çakır, R., Altıntaş, S., Özdemir, A.G., 2014. Plastik Seralarda Yetiştirilen Hıyar ve Kıvırcık Baş Salata Bitkilerinin Sulama Zamanı ve Su Kullanımı Planlaması. Atatürk Toprak Su ve Tarımsal Meteoroloji Araştırma İstasyonu Müdürlüğü Yayınları (TAGEM–BB–080201 L2). Yayın No: TAGEM 2014–1, Kırklareli. CR - Escarabajal–Henarejos, D., Molina–Martínez, J.M., Fernández–Pacheco, D.G., García–Mateos, G., 2015. Methodology for Obtaining Prediction Models of the Root Depth of Lettuce for Its Application in Irrigation Automation. Agricultural Water Management. 151: 167–173 CR - Heerman, D.F., 1985. ET in Irrigation Management, In Proceedings of the National Conference on Advances in Evapotranspiration. ASAE Publication: 323–334. CR - Kanber, R., 1984. Çukurova Koşullarında Açık Su Yüzeyi Buharlaşmasından Yararlanarak Birinci ve İkinci Ürün Yerfıstığının Sulanması. Bölge Topraksu Araştırma Enst. Yayınları. 114 (64). CR - Öneş, A., Demir, K., Çakmak, B., Kendirli, B., 1995. Sera Koşullarında Yetiştirilen ve Damla Sulama Yöntemi İle Sulanan Baş Salatanın Sulama Zamanının Planlanması. 5. Ulusal Kültürteknik K. Antalya: 207–219. CR - TÜİK, 2015. Türkiye İstatistik Kurumu. http://tuikapp.tuik.gov.tr/bitkiselapp/bitkisel.zul CR - Yazgan, S., Ayas, S., Büyükcangöz, H., 2006. Örtü Altında Yetiştirilen Baş Salatanın (Lactuca sativa var. Olenka) Sulama Zamanın Planlanması. KSÜ. Fen ve Mühendislik Dergisi. 9 (1): 88–91. UR - https://dergipark.org.tr/en/pub/comuagri/issue//270828 L1 - https://dergipark.org.tr/en/download/article-file/237566 ER -