Salinity stress and sustainable agriculture-A review

Soil Salinity is being recognized as a major threat to the agriculture and food production in the arid and semi-arid soils. Accumulation of sodium, magnesium and calcium salts enhances the alkalinity of the soils making the crop production difficult. Plant system has developed certain adaptation strategies for tolerating the toxicity of the salts in the soil. The present review focuses on the probable sources of soil salinity, induction of toxicity mechanisms of salinity stress tolerance in crop plants along with the strategies needed to be adapted to make agriculture a sustainable one.