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SOIL EROSION Soil erosion is a gradual process that occurs when the actions of water wind and other factors eat away and wear down the land causing the soil to deteriorate or disappear completely Soil deterioration and low quality of water due to erosion and run off has often become a severe problem around the world Many times the problems become so severe that the land can no longer be cultivated and is abandoned The key to minimizing soil erosion and saving the farm lands is the farmer himself Ultimately he is the one who must reduce the level at which erosion sediments are dislodged from his cropland This program will discuss the erosion process its effects on crops and the environment and the Best Management Practices that can be implemented to limit or contain soil movement from the land TYPES OF EROSION Soil erosion can be divided into two very general categories Geological erosion Geological erosion occurs where soil is in its natural environment surrounded by its natural vegetation This has been taking place naturally for millions of years and has helped create balance in uncultivated soil that enables plant growth A classical example of the results of geological erosion is the Grand Canyon and Accelerated erosion Accelerated erosion can be caused by mans activities such as agriculture and construction which alter the natural state of the environment Accelerated erosion is the type that will be covered in most depth It includes such problems as wind erosion The action of wind on exposed sediments and friable rock formations causes erosion abrasion and entrainment of sediment and soil Eolian action also forms and shapes sand dunes yardangs streamlined bedrock hills and other landforms Subsurface deposits and roots are commonly exposed by wind erosion Wind can also reduce vegetation cover in wadis and depressions scattering the remains of vegetation in interfluves Stone pavements may result from the deflation removal of
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