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Explain how the following farming practices may lead to loss of soil fertility

  1. Overgrazing 
  2. Frequent ploughing
  3. Continuous irrigation

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  1. Overgrazing- It leads to removal of vegetation cover thereby imposing soil to agents of erosion.
  2. Frequent ploughing - This weakness soil structure making it easy for agents of soil erosion to carry it away.It increases oxidation which results in loss of organic matter.
  3. Continuous irrigation - It causes leaching of soil nutrients making the top soil deficient of  soluble minerals / cause salinity.

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