Author
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Ayars, James |
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Submitted to: Book Chapter
Publication Type: Book / Chapter Publication Acceptance Date: 12/23/2008 Publication Date: N/A Citation: N/A Interpretive Summary: Salinity management is a significant component of water management in arid irrigated areas. This chapter describes on farm irrigation and drainage practices that are part of salinity management. Individual irrigation system types are described alone with what is needed to proper design and operation to ensure uniform distribution of water. Drainage system design and management is discussed including shallow groundwater management to control water table depths and increase in-situ crop water use. This section also discusses the use of sequential biological concentration as a method of drainage water disposal. Technical Abstract: This chapter provides a technical discussion of irrigation and drainage design and water management practices associated with irrigation in arid and semiarid areas. Surface irrigation being the principal method used in most arid areas is discussed in detail with the various types being outlined and design requirements being specified to ensure proper water application. Agronomic practices are discussed to ensure proper seed placement and leaching for plant establishment. Drainage system design criteria and root zone salinity control are discussed. Shallow groundwater management as a viable option for in-situ groundwater use is discussed with an emphasis on salinity management. Sequential biological concentration concepts are discussed and limitations and opportunities for saline drainage water disposal using this system are detailed. |
