(b) Give a geographical reason for the following
(i) Tanks are popular in the Deccan.
(ii) Tube wells are considered to be more reliable.
(iii) Irrigation is necessary despite the monsoon.
Answers
Answer:
(i)Tank irrigation is prominent in the Deccan Plateau as it has many natural depressions where tanks can be easily built. Well irrigation is nearly absent int he Deccan plateau because of the rugged and stony surface int he region which makes the digging of wells extremely difficult.
(ii)Advantages of tube well irrigation
Groundwater is easily available. The water table is fairly close to the surface. Able to irrigate a much larger area. More reliable during periods of drought when surface water dries up.
(iii)While it may rain well during one year, in another year, the rainfall may be scarce. Hence Irrigation is necessary despite the monsoon. ... This reduces evaporation and each crop may be irrigated according to its requirements. iii Alkaline salts may come up to the ground in areas where canals are used for irrigation.
Explanation:
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