Question

advantages and disadvantages of tanker irrigation

Answer 1

1. It is a cheap and popular method of irrigation.

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2. It maintains level of groundwater.

3. Where construction of wells is very costly due to hard rock surface, irrigation by tank is cheaper.

4. Expenditure is much less as compared to canals.

5. Use of additional water from rainfall is possible through tanks.

Disadvantages of Irrigation by Tanks:

1. Source of water in tanks is only from rainfall. If there is variation in rainfall, it has adverse effects on agriculture.



2. Rain water flowing towards tanks carries sediments also which reduces the depth of tanks. It requires de-silting from time to time, which is very costly,

3. Taking water from tanks for irrigation is very costly.

4. Tanks occupy large space because many natural tanks are very extensive.



Other sources of water for irrigation include lakes, earthen check dams, anicuts, check dams etc. In hilly areas, for conservation of rain water, anicuts and check dams are constructed. Similarly, natural and artificial lakes and earthen check dams are mainly constructed for local needs of water.