Sodicity

Authored by: Guy J. Levy

Handbook of Soil Sciences Resource Management and Environmental Impacts

Print publication date:  November  2011
Online publication date:  November  2011

Print ISBN: 9781439803073
eBook ISBN: 9781439803080
Adobe ISBN:

10.1201/b11268-22

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Abstract

Soils in numerous areas of the world are adversely affected by the presence of excess Na in the soil solution and as an exchangeable cation. For example, it is estimated that ∼50% of the arable land in Australia suffers from sodicity-related problems (Naidu, 1993). Sodium-affected soils exhibit poor soil water and air relations that adversely affect water movement in the soil, root growth, and plant production, and make the soil difficult to farm when either dry or wet. Consequently, in many cases, such soils have had to be abandoned.

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