What are the merits and demerits of canal irrigation in India?
Merits:
- These
are effective means of irrigation.
- They
generate income to government.
- They
cover large area for irrigation.
- Canals
are effective means to sustain drought.
- Carry
sediment which enrich the fertility of soil.
Demerits:
- Cause
problem of waterlogging and alkalinity in the peripheral areas.
- Irrigation
through water often causes wastage of water.
- Causes
disputes regarding sharing of water.
- Danger
of spreading water borne disease in peripheral areas.