تلخیص
Water quality data of about two thousand SCARP-I tubewells have been analysed to ascertain the causes of chemical changes occurred during a span of 25 years i.e. (1960-1985). The data showed that change from better to poor quality is mainly due to increase in RSC parameter. Limited data on lithology of well strata indicated that tubewells installed in coarse formation have shown improvement or no change while deteriorating wells contain different layers of clay which are considered to be the main source of soluble salts
* M.I. Lone and **, Azmat Beg . (1992) CAUSES OF CHEMICAL CHANGES IN TU, The Journal Soil & Environment , Volume 7, Issue (1-2).
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