Assesment of Salinity and Alkalinity of Groundwater and It Relation to the Geochemical Propersties of Soil in a Specific Site of Lasbela Region

Abstract

The study was conducted on assessment of salinity and alkalinity of groundwater and it relation to the geochemical properties of soil in a specific site of Lasbela region during 2013-14. Field data was collected through questionnaires. Water and soil samples were collected from 32 randomly selected sites. Both soil and water were analyzed for Electrical Conductivity and SAR by following standard procedures. The general trend line showed that soil salinity increased with an increase in water salinity. ECw has significantly affected the soil properties sites. The Alkanity levels both at water and soil differ significantly with each other. Alkanity of soil is increasing with the application of sodic water. Alkanity levels of groundwater used for irrigation of crops didn’t have a significant relation for soil Alkanity at different sites of the study area. There is an inverse relationship between Electrical conductivity and Sodium Adsorption Ratio. The saline groundwater quality from the irrigation to the whole region is although causing reduction in soil alkanity but it is causing lesser impact when compared to the individual sites in the study area.

Keywords: Salinity, Alkanity, Sodium Absorption Ratio, Electrical Conductivity, Assessment