For the past hundreds of year’s trees like Dalbergia sissoo (Shisham), Acacia nilotica (Kikar), Prosopis cinneraria (Khejri) etc. have inhabited vast areas in the plains of Afghanistan, Pakistan, India, Nepal and Myanmar. These have also been widely used for afforestation in many parts of the country except in the very hot, cold and wet tracts. These have good atmospheric N2 - fixing ability, therefore, are extensively planted in social and agro-forestry programmes. In order to evaluate the effect of soil salinity, present investigation was conducted on two tree species . Dalbergia sissoo Roxb. ex DC (Shisham) and Acacia nilotica (L.) willd. ex Delile (Kikar) growing under field conditions in Hisar district during the year 2011-2012. In Dalbergia sissoo the mean sodium was mg/g which was significantly lower than mg/g obtained under saline conditions. Mean value of Sodium in Acacia nilotica also showed significant increase in non-saline over saline site trees. | Effect of salinity to change on ionic composition in D. sissoo and A. nilotica
