Leaching – Plant nutrients are lost beyond the reach of plant roots.
Soil erosion – Top soil is lost by the agent of erosion e.g. wind, water.
Monocropping – This utilizes only specific nutrients from a particular zone making it exhausted.
-It also causes accumulation of certain pests and diseases.
Continuous cropping –This continuously exhaust the fertility of land unless the the land if fallowed.
Change of soil PH -Use of either acidic or basic fertilizers affect soil pH and Consequently the
presence of micro-organisms hence soil fertility affected.
Burning of vegetations –Destroys organic matter and soil structure. Nutrients are lost and soil
exposed to erosion.
Accumulation of salts - Common in waterlogged areas and semi-arid areas in which poor drainage
causes evaporation during the dry periods, making the soil saline hence accumulating a lot of
monica20 answered the question on October 13, 2017 at 22:59
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