1.

Enlist various irrigation methods used in India? Discuss the drip method in brief.

Answer»

Various irrigation methods used in India: Irrigation method refers to the manner in which irrigation water is applied to the field. 

There are four principal methods of irrigation: 

  • Surface irrigation method 
  • Sub-surface Irrigation method 
  • Drip irrigation method 
  • Sprinkler irrigation method

Drip irrigation: In this method, irrigation is given by using small diameter PVC tubing with devices called emitters or drippers at selected places near the base of plants. The losses by deep percolation and evaporation are minimum. This method is good for economizing water use.

Advantages of drip irrigation method: 

  • No deep percolation losses. 
  • Maintains optimum moisture. 
  • Economize water use. 
  • Fertilizer can also be applied along with irrigation water.

Disadvantages of drip irrigation method: 

  • High cost. 
  • Rats and other animals may damage the system. 
  • Dirty water cannot be used. 
  • Does not work under very low pressure.


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