Assessment of groundwater quality for irrigation of Buxa Block, Jaunpur district

Abstract

The knowledge of quality of groundwater in various region of Jaunpur district is necessary for its judicious use and management in agriculture. Therefore characterization of ground water in Buxa Block of Jaunpur district was undertaken during 2009. The water samples were randomly collected from different villages of the block and analyzed for EC, pH, Na, Ca, Mg, CO - 3, HCO- 3, SAR (sodium absorption ratio), R.S.C.(residual sodium carbonate), and Mg:Ca ratio were analyzed. Moderate level of salinity (C1- salinity class) in irrigation water samples was observed. The water samples were the neutral to slightly alkaline in reaction. The carbonate was observed in 74 % water samples but bicarbonate content ranged from 183.0 to 732.0 mg L-1. Calcium and Magnesium content in irrigation water samples ranged from 20 to 60 mgL-1 and from 49.4 to 377.4 mgL-1respectively. Most of groundwater of Buxa block comes under C1S1 class and had moderate salinity and low alkalinity. Considering sufficient rainfall received in this area salinity, alkalinity and residual sodium should not be the problem. Irrigation quality of all samples of water is very good and suitable for the irrigation.