Question

Question 6
Mention any two methods of recharging ground water aquifers.
(b)
(i) Name the most common means of irrigation used in India.
(c
(ii) Give one reason for the popularity of this means of irrigation in our country.
(1) Name two states of India where Canal irrigation is extensively used.
(ii) Name the types of canals used in India.
(iii) Mention one point of difference between the types of canals mentioned by you.
(1) What geographical conditions make irrigation necessary in the country?
(d)
(ii) How has irrigation changed the cropping pattern in India?
(iii) Why is there a scarcity of surface water in our country?​

Answer 1

Answer:

Irrigation vs. Rain-Fed Agriculture

There are two main ways that farmers and ranchers use agricultural water to cultivate crops:

Rain-fed farming

Irrigation

Rain-fed farming is the natural application of water to the soil through direct rainfall. Relying on rainfall is less likely to result in contamination of food products but is open to water shortages when rainfall is reduced. On the other hand, artificial applications of water increase the risk of contamination.

Photo of a water sprayer irrigating a field

Irrigation is the artificial application of water to the soil through various systems of tubes, pumps, and sprays. Irrigation is usually used in areas where rainfall is irregular or dry times or drought is expected. There are many types of irrigation systems, in which water is supplied to the entire field uniformly. Irrigation water can come from groundwater, through springs or wells, surface water, through rivers, lakes, or reservoirs, or even other sources, such as treated wastewater or desalinated water. As a result, it is critical that farmers protect their agricultural water source to minimize the potential for contamination. As with any groundwater removal, users of irrigation water need to be careful in not pumping groundwater out of an aquifer faster than it is being recharged

Answer 2

The ground water can be charged by rain water