Methods of irrigation

Overhead sprinkler: This is basically used in the irrigation of crops such as sugar cane.  Water is pumped through a tube up into the air and sprinkled in form of rain.
 
Drip irrigation: This involves setting up of pipes with small holes in them.  Through these holes water drops out at a low pressure.
Canal Irrigation:
This involves the construction of water canals serving the growing crops where water is needed.  This method of irrigation is most ideal in the gentle sloping areas.