Water Management in Agriculture

Water Management in Agriculture

Agricultural, Environmental and Economic Considerations in Determining Pipe Drain Depth in Arid and Semi-Arid Regions- Case Study Azadegan Plain

Authors
majid Sharifipour 1
Hamzeh Ali Alizadeh 2
Abdali Naseri 3
Abdul Majid Liaghat 4
AliReza Hasanoghli 5
1 Assistant professor, Department of Water Engineering ,Faculty of Agricultural Sciences, University of Lorestan
2 Assistant professor, Department of Water Engineering ,Faculty of Agricultural Sciences, University of Ilam
3 Professor, Department of irrigation and Drainage, , University of Ahvaz
4 Professor, Department of irrigation and Drainage, Faculty of Agricultural Sciences, University of Tehran
5 Associate Professor, Department of irrigation and Drainage, Agricultural Engineering Research Institue, karaj, Iran(AERI)
Abstract
There are different viewpoints in estimating basic drainage parameters, especially pipe drain depth. Each of these viewpoints considers different agricultural needs (aeration and salinity control), environmental consideration (quality and quantity of drain water) and economic matters (drains density, trencher efficiency relative to the depth). Consider each one of these matters could lead drains to be shallow or deep. This paper introduces different viewpoints in determining pipe drain depth and scrutiny their results. Then, due to local circumstances of Azadegan plain drainage project how is under construction, drain depth determined by each of these viewpoints. Results shown that considering environmental matters and drain depth will be the minimum and considering salinity control will be the maximum. Results also shown that using controlled drainage in the study area for keeping groundwater table up in the irrigation season, avoiding over drainage, and keep it down in no irrigation season to avoid salt uprising could be the best solution.
Keywords
groundwater
controlled drainage
drain water
salinity
capillary
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Water Management in Agriculture
Volume 2, Issue 1
September 2015
Pages 71-80