Wednesday, 20 June 2018

Advantages(Direct & Indirect) And Disadvantages of Irrigation

Advantages of Irrigation 

Following direct and indirect advantages are described below

Direct advantages of Irrigation

(i) Increase in food production :- 

Irrigation improves the yield of crops , which leads to increase in food production, thus developing people as well as society.

(ii) Revenue generation :- 

When consistent supply of water is guaranteed for irrigation ,the cultivators can grow certain predominant or expensive crops(like cash crops) instead of substandard or low priced crops. In this manner income is created.

(iii) Protection against drought :- 

The provision of adequate irrigation facilities in any region ensures protection against failure of crops from famine or droughts.

(iv) Mixed cropping :-

 Means sowing of at least two types of crops together in a similar field. This practice is followed so that if climate conditions are not good for one crop it might be reasonable for other crop .But if irrigation facilities are made available, the need of mixed cropping is eliminated:

Indirect advantages of Irrigation

(i) Power generation :- 

Major river valleys projects are generally planned to generate hydroelectric power together with irrigation. 
However comparatively small quantity of hydroelectric power might also be generated at a small cost on projects which are primarily planned for irrigation.

(ii) Transportation :- 

The irrigation canals are provided with unsurfaced roads primarily for purposes of inspection and maintenance.These roads give a decent pathway to the nearby people.The network of irrigation canals can be used for transportation of goods as well as human beings

 (iii) Ground water table :- 

In areas where irrigation facilities are provided, due to constant percolation of a portion of water flowing in the canals and also that is supplied to the field, the ground water storage is increased and consequently ground water table is raised.

 (iv) Employment :- 

During the constructions of irrigation works, employment is provided

Disadvantages of Irrigation

1.Enormous supply of irrigation water tempts the cultivators to use more water than required.Due to Excess water supplied to the field ,which leads to percolate water into the soil .Hence, due to constant percolation ground water table would be raised and will prompt water logging. 

2.The ground water can get polluted due to seepage of the nitrates (applied to the soil as fertilizers)  into the ground water .