Management of saline and sodic soils

P. Ramamoorthy, M. Ramamoorthy and V. Nirubana

International Journal of Agricultural Sciences and Technology (IJAGST), 2021, vol. 1, issue 01

Abstract: Saline and sodic (alkali) soils can significantly reduce the value and productivity of affected land. By estimation, slightly more than one-fourth of irrigated farmland in the United States is affected by soil salinity. Ions most commonly associated with soil salinity include the anions chloride (Cl– ), sulfate (SO4 = ), carbonate (HCO3 – ), and sometimes nitrate (NO3 – ) and the cations sodium (Na+ ), calcium (Ca++), magnesium (Mg++), and sometimes potassium (K+). Crops differ in ability to tolerate salt accumulation in soils, but if levels are high enough (more than 16 mS/ cm), only tolerant plants will survive. As salts accumulate in soil, the soil solution osmotic pressure increases. Reclamation of sodic soils is different; excess sodium must first be replaced by another cation and then leached. Sodic soils are treated by replacing the sodium with calcium from a soluble source.

Keywords: Crop; Production/Industries (search for similar items in EconPapers)
Date: 2021
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Persistent link: https://EconPapers.repec.org/RePEc:ags:ijag24:340575

DOI: 10.22004/ag.econ.340575

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