Vegetative bioremediation of sodic and saline-sodic soils for productivity enhancement and environment conservation

  • Manzoor Qadir
  • Jim D. Oster
  • Sven Schubert
  • Ghulam Murtaza

Abstract

Salt-affected soils occupy nearly 20% of irrigated area worldwide [1]. As a major category of salt-affected soils, sodic and saline-sodic soils are characterized by the occurrence of sodium (Na+) at levels that result in poor physical properties and fertility problems, thereby threatening agricultural productivity in many arid and semi-arid regions. Amelioration of these soils is driven by providing a soluble source of calcium (Ca2+) to replace excess Na+ on the cation exchange complex [2]. The displaced Na+ is either leached from the root zone by excess irrigation, a process that requires soil permeability and provision of a natural or artificial drainage system, or is taken up by crops.

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Copyright information

© Birkhäuser Verlag/Switzerland 2006

Authors and Affiliations

  • Manzoor Qadir
    • 1
  • Jim D. Oster
    • 2
  • Sven Schubert
    • 3
  • Ghulam Murtaza
    • 4
  1. 1.International Center for Agricultural Research in the Dry AreasAleppoSyria
  2. 2.Department of Environmental SciencesUniversity of CaliforniaUSA
  3. 3.Institute of Plant NutritionJustus Liebig UniversityGiessenGermany
  4. 4.Institute of Soil and Environmental SciencesUniversity of AgricultureFaisalabadPakistan

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