Geography
Canal irrigation leads to the ground around it becoming unproductive because
- due to waterlogging the capacity of the soil to absorb water decreases and the water which collects can ruin the crop
- percolation of water through canal can lead to swamps
- problem of salt effervescence due to over-flooding of the fields make the soil unsuitable for farming
- all the above
Related Questions
The given type of modern irrigation is useful for arid region
- bamboo irrigation
- tube well irrigation
- drip irrigation
- sprinkler irrigation
Irrigation by canals is more suitable in Northern India because
- it is cheap
- it irrigates larger area
- the surface of the northern plain is flat with soft soil
- it is perennial
Rainwater harvesting is useful for
- industrial use
- recharging ground water
- domestic use
- agriculture
Connect the correct pairs.
S. No. Column A Column B 1. paar Maharashtra 2. kere Assam 3. tal Karnataka 4. dongs Western Rajasthan