Characterization of Soil Profiles under Prolonged Use of Different Quality Irrigation Waters in Semi-arid Tract of Uttar Padesh

Twenty seven bench-mark locations were studied with regard to quality of irrigation water and morphological, physical and chemical characteristics of soil profiles. The correlations and regressions calculated for all the locations revealed accumulation of salts in surface and sub-surface soils under saline water irrigation in the month of June. The accumulation of salts was found to increase with increase in clay or clay+silt fractions in the soil which has not affected hydraulic conductivity of soil adversely. There was positive correlation between soluble sodium percentage (SSP) of soil, and SSP and residual sodium carbonate (RSC) of irrigation water; however, no correlation was observed between exchangeable sodium percentage (ESP) of soil and sodium adsorption ratio (SAR), SSP and RSC of irrigation water.