Question

Why canals make soil infertile give reasons

Answer 1

Explanation:

Soil salinity is the salt content in the soil; the process of increasing the salt content is known as salinization.[1] Salts occur naturally within soils and water. Salination can be caused by natural processes such as mineral weathering or by the gradual withdrawal of an ocean. It can also come about through artificial processes such as irrigation and road salt.

Answer 2

Answer:

Most of the canals provide perennial irrigation and save the crops from drought conditions.

ii. The sediments brought by the canals are deposited in the fields. They add to the fertility of the soils.

iii. The canals, which are parts of multipurpose river valley projects, provide cheap source of irrigation.

iv. Although the initial expenditure is very high, but it is quite cheap in the long run.

I hope this is help you....