-Soil erosion;erosion by wind, and running water carries away fertile solis leading to degeneration --leaching; soil nutrients are dissolved in percolating water and carried to lower layers leading to soil degeration
-Monocropping; planting of the same crop year after year may lead to the exhaustion of certain minerals in the soil
-Irrigation;This results in the accumulation of salts on the soil surface inhibiting growth of plants
Githiari answered the question on October 24, 2017 at 09:48
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