Correct Answer - Option 1 : Flow irrigation
(i) These are also called gravity irrigation. It is the type of irrigation in which water is available at a higher level to enable supply to the land by gravity flow.
(i) When groundwater lifted up to be used as irrigation water or water supply is at too low a level to run by the gravitation of the land.
(ii) In this water is lifted up by some mechanical means such as pump.
(i) This is also called as trickle irrigation as water is directly applied to the root zone of the plant using a drip nozzle.
(ii) In this method evaporation and percolation losses are very less.
(iii) This is the most efficient method.
(i) In this method of irrigation water is applied through a network of pipes and pumps. This method is suitable:
- when topography is irregular or rolling.
- when water table is high
- when water is not easily available
- for more permeable as well as less permeable soil