The original meaning of this word deals with Middle English denoting the



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10. SOIL IMPROVEMENT: MELIORATION

As the soil is the end product of nature which is the base of any growing in reality, its state and condition are the most essential matters for today.

Unfortunately, many factors, like leaching, pollution, and improperly use of soils affects and reacts the soil and makes much many circumstances needing to be solved. So the salvation of the problems of soils or getting it better is called soil improvement or melioration. Soil improvement in its broadest sense is the alteration of any property of a soil to improve its engineering performance. So melioration in its broadest sense means “improving, changing and getting smth. better.”, and consequently, soil melioration is improving, getting better and remaking of soils, moreover, preparing it for further agricultural procedures. This may be either a temporary process to permit the construction of a facility or may be a permanent measure to improve the performance of the completed facility. Various Techniques of Soil Improvement:


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