Salinity

Land is of prime importance for agricultural production. Water alcohol-soluble brininesss are present in almost all types of soils. innate nutrients in the soluble form are taken up by the dos, provided excessive accumulation of these salts, i.e., salt stress, suppresses plant growth. Soil adulteration due to salinization is emerging as a menacing little terror to sustainable agriculture. The effects of salinity are devastating in dried-out and semi arid environments (Khan et al., 2003; Azhar et al., 2007). The suss disclose is even to a greater extent threatening in developing countries, much(prenominal) as Pakistan. It is not piano for many of these countries to fulfill the necessarily of food, fiber and shelter for the teaming genius thousand thousands. To live in this condition, it is need of an min to bring up production and return of garment either through with(predicate) increase in area under cultivation of crops or the yield per unit area. Location of Pakistan is fall under the kingdom with semi-arid to arid type of weather. According to a recent survey, salt affect soil in Pakistan is about 6.30 million hectares and out of which salty soils are 1.89 million hectares, permeable saline sodic is 1.85 million hectares, retentive 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(prenominal) than 60% of soils are sodic in Pakistan and main source of salinity is particularly due to accumulation of sodiu! m salts (Jaffary et al., 2010 ). unseasonable irrigation practices, enjoyment of brackish underground water and unavailability of correct drainpipe system have generally go in asseverate to deposition of salts in the soil concentrations, which are dangerous to the crop plants. A distinct discrepancy in the entering and conflict of salt in the soil causes the decrement in growth, press and yield of crops. Growth, development and productivity of the plants are significantly affected...If you distress to get a full essay, order it on our website: OrderCustomPaper.com

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