Volume 14, Issue 4 (2012)                   JAST 2012, 14(4): 889-902 | Back to browse issues page

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Ertek A, Erdal I, Yilmaz H I, Senyigit U. Water and Nitrogen Application Levels for the Optimum Tomato Yield and Water Use Efficiency. JAST 2012; 14 (4) :889-902
URL: http://jast.modares.ac.ir/article-23-8956-en.html
Water and Nitrogen Application Levels for the Optimum Tomato Yield and Water Use Efficiency
A. Ertek * 1, I. Erdal2 , H. I. Yilmaz1 , U. Senyigit1
1- Department of Irrigation, Faculty of Agriculture, Süleyman Demirel University, 32260, Isparta,Turky.
2- Department of Soil Science, Faculty of Agriculture, Süleyman Demirel University, 32260, Isparta,Turky.
Abstract:   (6791 Views)
This study was conducted to determine the effects of different water and nitrogen application levels on drip-irrigated tomato plants. The amount of water usage was based upon the pan evaporation from a screened (class “A”) evaporation pan. The treatments consisted of two irrigation intervals (I1= 5 days and I2= 10 days), three plant-pan coefficients (Kcp1= 0.50; Kcp2= 0.75 and Kcp3= 1.00) and three nitrogen (N) levels (N0 = 0, N1= 80 and N2= 160 kg ha-1). The I, Kcp and N levels affected the tomato yields and water usage efficiencies, however the effects of nitrogen applications were found to be greater than those of the other applications. Consequently, to reach the maximum tomato yields under similar climate and soil conditions, plant-pan coefficients (Kcp) and nitrogen values should be equivalent to 1.00 and 160 kg ha-1, respectively.
Keywords: Irrigation, N fertilization, Pan evaporation, Plant-pan coefficient, Tomato
Full-Text [PDF 495 kb]   (6637 Downloads)    
Subject: Irrigation and Drainage
Received: 2010/07/21 | Accepted: 2011/09/21 | Published: 2012/04/10
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