Evaluation of quality of underground irrigation water of Nagaur District with salinity, Sodicity and alkalinity contamination

Abstract

In this study, some important chemical parameters of underground water of the area were evaluated for the criteria of irrigation water quality. Higher values of pH, EC, SAR and RSC make the underground water unfit for irrigation purposes. One hundred fifty underground irrigation water samples were collected from various tehsils of Nagaur district during 2018-19. Based on salinity the classes of irrigation water were recorded normal water (0.66%), Low salinity water (39.34%), Medium salinity water (60%) and based on sodicity the classes of irrigation water were recorded normal water (2%), Low sodicity water (74.66%), medium sodicity water (23.34%) and based on alkalinity the classes of irrigation water were recorded non alkaline water (30%), Normal water (2%), Low alkalinity water (44.66%), medium alkalinity water (16%), high alkalinity water (7.34%). Majority of the water samples are fall under low to medium suitable category of water for irrigation purposes.