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:: Volume 1, Number 2 (Autumn 2014) ::
3 2014, 1(2): 19-28 Back to browse issues page
Evaluation of HYDRUS2D for estimating maize evapotranspiration and virtual water content
Fatemeh Karandish
assistant Professor Water Engineering Department
Abstract:   (1891 Views)
Fresh water scarcity has become a global problem which needs a serious attempt to find proper solutions for decreasing the pressure on the limited water resources. The exact estimation of crop virtual water would help with choosing crops with high crop and water productivity which lead to both food and water security. Thus, in this research, maize virtual water was estimated using HYDRUS2D based on the soil water balance under field condition. Results demonstrated the high potential of HYDRUS2D for simulating maize evapotranspiration. Maize water consumption was 649 mm in 2010 and decreased to 572 mm in 2011 due to yearly variations of climate parameters. Less water consumption and high grain yield (6.6 Mg ha-1) in 2011 caused maize virtual water (0.87 M3 Kg-1) to be 6.45% less than ones in 2010 (0.93 M3 Kg-1). Assuming 20 Kg Year per capita consumption, Mazandaran Province would be a maize importer region which make it a water dependent region. However, importing maize from dry lands would increase the water sufficiency in the study area
Keywords: Evapotranspiration, grain yield, HYDRUS2D, Water productivity.
Full-Text [PDF 771 kb]   (644 Downloads)    
Type of Study: Research | Subject: Irrigation & Drainage
Received: 2015/01/29 | Accepted: 2015/07/11 | Published: 2015/07/11
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Karandish F. Evaluation of HYDRUS2D for estimating maize evapotranspiration and virtual water content . 3. 2014; 1 (2) :19-28
URL: http://jap.haraz.ac.ir/article-1-40-en.html
Volume 1, Number 2 (Autumn 2014) Back to browse issues page
نشریه علمی - پژوهشی هیدرولوژی کاربردی Journal of Applied Hydrology
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