A crash course in changing the world.
This include, loss of nutrients and organic matter, acidification associated with removal of nutrients or misuse of fertilizers, increased leaching by soil exposure due to removal of vegetative cover, increased temperatures and oxidation of the soil organic matter due to exposure and cultivation, salinization and sodication often associated with inappropriate irrigation practices and inadequate drainage and pollution from improper management of industrial and mining wastes. Physical degradation involves crusting, compaction and water-logging. Other forms of degradation include the problems of salinization and sodication or alkalinization. Sodication causes dispersion of the clay and inhibits water movement into and through the soil. Whether or not the effects of soil degradation can be easily corrected depends on the extent to which the problem has developed. This, in turn, may be controlled by good soil management.
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