ABSTRACT
Ever-increasing population in developing countries is exerting negative effects on ecological balance in general and agriculture in particular because of the requirement of more food for sustainability. Use of different fertilizers and ill-managed irrigation practices year after year results in decrease in soil fertility and crop productivity [1]. Of the various abiotic stresses, salinity is of prime concern due to its injurious effects and wide-spreading nature. Salinity may be dened as increase in the total salt concentration, mainly chlorides and sulfates of sodium, calcium, and magnesium in the soil. However, sodium constitutes the major component of soil salinity [2]. About half of the total irrigated land world over is affected by salinity, but this problem is more conned to the tropical part of the world [3]. This is due to the fact that the major part of agricultural lands is located in tropical countries that are already overburdened with population.
