Kelly ratio (KR)
Kelly ratio is an important index to assess the groundwater for
irrigation purposes (Merouche et al., 2019). The value of KR less than
one indicates the insufficiency of sodium ion (good for irrigation), and
greater than one indicates an excessive amount of sodium ion in
groundwater (unsuitable for irrigation). KR values in the groundwater
varied from 0.05 to 0.69, with a mean of 0.21. All the sample locations
are suitable for irrigation uses in the study area (Fig.11g).