Journal of the Indian Society of Soil Science

SCOPUS
  • Year: 1994
  • Volume: 42
  • Issue: 2

Sodicity of Irrigation Waters in Relation to Precipitation/Dissolution of CaCO3

  • Author:
  • Manoj K. Sharma, S.R. Poonia, Raj K. Gupta, R.S. Siyag
  • Total Page Count: 4
  • DOI:
  • Page Number: 244 to 247

Department of Soil Science, CCS Haryana Agricultural University, Hisar, Haryana, 125004.

* Central Soil Salinity Research Institute, Karnal, Haryana, 132001.

Abstract

Twenty six synthetic andfour natural water samples were analysed for their ionic composition and ionic strength before and after saturation with CaCO3. Their measured and calculated pH after saturation were highly correlated (r = 0.965). Twenty three water samples resulted in positive values of saturation index, leading to increase in their sodium adsorption ratio after equilibration with CaCO3. Equation proposed by Bower et a1. (1965) can be-used to calculate pHc of waters. The effect of ion complexation on SAR was negligible.

Keywords

Water samples, CaCO3, pHc, sodium adsorption ratio