Water and nitrogen application levels for the optimum tomato yield and water use efficiency

ERTEK A., ERDAL İ., YILMAZ H., ŞENYİĞİT U.

Journal of Agricultural Science and Technology, cilt.14, sa.4, ss.889-902, 2012 (SCI-Expanded, Scopus) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 14 Sayı: 4
  • Basım Tarihi: 2012
  • Dergi Adı: Journal of Agricultural Science and Technology
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.889-902
  • Anahtar Kelimeler: Irrigation, N fertilization, Pan evaporation, Plant-pan coefficient, Tomato
  • Isparta Uygulamalı Bilimler Üniversitesi Adresli: Hayır

Özet

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.