Salt-Affected Soils: Plant Response

Authored by: Anna Eynard , Keith D. Wiebe , Rattan Lal

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-120006655

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Abstract

Salt-affected soils can be defined as soils on which the growth of most crop plants is limited by an excess of easily soluble salts. In sodic soils, the high sodium content relative to other cations is the main factor affecting plant growth. There is a continuum of plant responses to the continuous increase of salt stress with increasing salt or sodium concentrations in the soil. Saline and sodic conditions, although very different, are often both implicated in adversely affecting plant performance so that terms such as salinity, saline, and salinization are generically referred to soil conditions and processes leading to salt and sodium stresses on plants.

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