Question

Give reason : canal irrigation leads to ground around it becoming unproductive ​

Answer 1

Explanation:

Canal irrigation leads to the ground around it becoming unproductive. ... 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. This happens when the water table is only a few feet below the ground.

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Answer 2

Explanation:

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