Water management in raised bed systems: a case study from the Chao Phraya delta,Thailand |
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| Institution: | 1. DORAS Center, Kasetsart University, ORSTOM, Administrative building 10th floor, Bangkhen, 10900BangkokThailand;2. Royal Irrigation DepartmentBangkokThailand;3. Department of Irrigation Engineering, Kasetsart University, Administrative building 10th floor, Bangkhen, 10900BangkokThailand;4. Laboratory for Environmental Studies, Kasetsart University, Administrative building 10th floor, Bangkhen, 10900BangkokThailand;1. School of Mechanical Engineering, Guizhou Institute of Technology, Guiyang, China;2. School of Engineering, Newcastle University, Newcastle upon Tyne, UK;3. Department of Vehicle Engineering, Army Academy of Armored Forces, Beijing, China;4. NewRail Centre for Railway Research, Newcastle University, Newcastle upon Tyne, UK;5. Flaw Detection Workshop, Lanzhouxi Public Works Section, Lanzhou Railway Bureau, China;1. Sichuan University of Science and Engineering, Zigong, China;2. School of Electrical and Electronic Engineering, Newcastle University, UK;3. School of Manufacturing Science and Engineering, Sichuan University, China;4. School of Electronic and Information Engineering, Fuqing Branch of Fujian Normal University, China;1. School of Computer Science, Georgia Tech, United States;2. Department of Computer Science, Purdue University, United States |
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| Abstract: | Agricultural diversification is a major trend in Asian rice-based systems. In lowlands, however, soil and water conditions are mostly suitable for rice cultivation and the development of raised beds is often required to accommodate vegetables or fruit trees. Raised bed systems go together with specific techniques of water management, both at the polder level (between the plots and the canals) and at the plot level (bed irrigation). Details of this management in the Chao Phraya Delta are given for three different crops: mango, grapes and asparagus and differences are explained. The water balance over 1 year is specified, showing the impact of seepage and estimating water requirements. Water quality is shown to be a major issue. |
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