Salt-Affected Soils: Physical Properties and Behavior

Authored by: Hwat Bing So

Encyclopedia of Environmental Management

Print publication date:  December  2012
Online publication date:  December  2012

Print ISBN: 9781439829271
eBook ISBN: 9781351235860
Adobe ISBN:

10.1081/E-EEM-120046492

 Download Chapter

 

Abstract

Sodic soils are generally associated with the presence of high concentrations of sodium salt and are considered as a subset of saline soils. They are generally considered as marginal and not suitable for cropping and left for grazing or under native ecosystems. As the human population increases, the need for increasing food production leads to increasing use of marginal land and increasing use of irrigation with poor quality water. These in turn lead to the development of secondary salinization and, associated with this, increasing soil sodicity in arable land. This entry describes the various observable field problems associated with the presence of high exchangeable sodium concentrations, all of which can be related to the fundamental processes of slaking and dispersion. The effective management of sodic soils is based on controlling one or both of these processes.

 Cite
Search for more...
Back to top

Use of cookies on this website

We are using cookies to provide statistics that help us give you the best experience of our site. You can find out more in our Privacy Policy. By continuing to use the site you are agreeing to our use of cookies.