1.

Distinguish between organic manures and chemical fertilizers.

Answer»

1. Organic manures. 

  • organic manures supply both nutrient and humus to the soil. 
  • may not provide all the nutrients on required quantity. 
  • farmers cannot choose according to their requirements. 
  •  Bind loose soil increase their water holding capacity, aeration which improves merebial activity.
  •  Do not cause soil or water pollution.

2. Chemical fertilizers 

  • The chemical fertilizers supply only nutrients to the soil. 
  • It provide all the nutrient in specific ration readily usable form. 
  • Farmers can choose according to their requirement. 
  • Have the tendency to accumulate and alter the soil characteristic which harm soil fauna. 
  • Cause soil and water pollution.


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