Salinity

Land is of prime importance for agricultural production. Water alcohol-soluble brininesss be present in almost all types of soils. innate nutrients in the soluble form are taken up by the dos, provided excessive accumulation of these saltinesss, i.e., salt stress, suppresses plant growth. Soil abasement due to salinization is emerging as a menacing curse to sustainable agriculture. The effects of brininess are devastating in dried and semi arid environments (Khan et al., 2003; Azhar et al., 2007). The suss disclose is even more threatening in developing countries, much(prenominal) as Pakistan. It is not easygoing for many of these countries to fulfill the necessarily of food, fiber and shelter for the teaming single thousand thousands. To live in this condition, it is need of an min to kindle production and replication of garment either through with(predicate) subjoin in area under cultivation of shapes or the yield per unit area. Location of Pakistan is fa ll under the kingdom with semi-arid to arid type of weather. According to a recent survey, salt touched soil in Pakistan is about 6.30 million hectares and out of which salty soils are 1.89 million hectares, permeable salty sodic is 1.85 million hectares, water-resistant saline sodic is 1.02 million hectares and 0.028 million hectares is sodic in casing (Anonymous, 2010).

The saline soils contain composition of polar salts (Rhoades et al., 1992) but different types of salt composition is present in saline soils but more than 60% of soils are sodic in Pakistan and main source of salinity is particularly due to accumulati on of sodium salts (Jaffary et al., 2010 ). ! unseasonable irrigation practices, engross of brackish underground water and unavailability of correct drain system have generally go in erect to deposition of salts in the soil concentrations, which are dangerous to the crop plants. A distinct discrepancy in the entering and distinction of salt in the soil causes the decrement in growth, excerpt and yield of crops. Growth, development and productivity of the plants are significantly affected...If you want to get a full essay, order it on our website: OrderCustomPaper.com

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