Investigation of the Effectiveness of Irrigation Water Regimes and Nitrogen Amount on the Yield and Water Use Efficiency of Tomato

Document Type : Research Paper

Authors

1 M.S in Irrigation and Drainage, University of Tehran

2 Associate Professor in Irrigation and Reclamation Engineering Department, University of Tehran

3 Associate Professor in Irrigation & Reclamation Engineering Department, University of Tehran

4 Professor in Horticulture Department, University of Tehran, respectively

Abstract

This study was carried out in 2003 to investigate the effects of different water treatments (40, 60, 80, 100 and 120 percent of water requirement) and different amounts of nitrogen (60, 120 and 180 kg/ha) as well as their interaction on the yield and water use efficiency (WUE) of tomato (Var. Early Urbana). The experiment was performed on the research farm of agriculture faculty of Tehran University (semi-arid area) in a clay–loam soil, using a split plot design with three replications (irrigation treatments as main plots and different amounts of nitrogen as sub plots). The results obtained from statistical analysis indicated that the different treatments of irrigation and nitrogen as well as their interactions have significant effect (1% level) on the yield and WUE of tomato. The maximum yield and WUE were obtained at 100% water requirement with 120 kgN/ha. Furthermore, it was observed that reduction of water consumption by 20, 40 and 60 percent reduced the crop yield by 20, 57, and 74 percent, respectively.

Keywords

References

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Iranian Journal of Soil Research
Volume 19, Issue 2
November 2005
Pages 259-265

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