Evaluation of irrigation water quality under newly weathered soil in hot and semi-humid region of central India

Abstract

Abstract Throughout the pre-monsoon, monsoon, and post-monsoon seasons, the participants in this research took water samples that were later examined for a variety of physiochemical characteristics. Irrigation water quality metrics such as SAR, RSC, Na%, KR, MHR, PS, PI, and RSBC were used in conjunction with the calculation of IWQI in order to conduct an evaluation of the appropriateness of the irrigation water. The major dominated anions in the study area were found HCO3−> SO42−> Cl− during all the season, while cation was fluctuated from Na+> Mg2+> Ca2+> K+ at pre-monsoon season and Na+> Ca2+> Mg2+> K+ at both monsoon and post-monsoon season. Ca (Mg)- HCO3−, Na- HCO3−and mixed type water was found in the study area which was originated from the silicate weathering and evaporate dissolution. Some samples were reported with high KR, MHR, Na%, RSC, PS and RSBC which exceeding limit and unsuitable for irrigation use. Out of the total collected water samples 32%, 64%, 8%, 44%, 12%in pre-monsoon and 24%, 60%, 8% 16%, 12% in post-monsoon period were not suitable for irrigation purpose with having high KR, MHR, Na%, RSC and PS, respectively. While, 8% (KR), 52% (MHR), 12%(RSC) and 8% (PS) was also unsuitable for irrigation purpose during monsoon period. However, the IWQI of the study area was noted 48% water sample having above the limit > 100 which was unsuitable for irrigation water.