Irrigation Class 5 - EVS kkgoenka

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Irrigation






By Aashish Gupta Sir








              Class    5              


Irrigation

It is the application of required amount of water to plants at proper intervals. 

Sources of Water

 Main Source - Rain

Surface water - Lakes, Ponds, River, Oceans, Sea

Groundwater - Wells, Tube wells, Step wells

Means to minimise water wastage during irrigation 

1.  Use modern methods of irrigation.

2.   Use organic manure that needs less water than fertilizers.

3.  Grow crops according to regions, climate and availability of water.
Modern Methods of Irrigation

Sprinkler System - Plants are irrigated by spraying water on plants like rain by spronkler. 

Drip System - It is popular where there is scarcity of water.
Narrow pipes with small holes at the side of plant root is laid in the field and when water flows through pipe, water comes out in a small amount near the root of the plant. 

Other Irrigation Methods

Canals

Canals are man made waterways originated from river dams . These are used for irrigation, water supply to human and animals and also for navigation.

Rahat

It is a traditional irrigation system.
It is also called water wheel or Persian wheel.
Many containers are fixed on an iron ring and water is pulled up from Wells or Mini Canal, when these wheels are rotated with the help of bullocks .


Dams and Canals for Irrigation

1.   Indira Gandhi Canal

2.  Mahi Bajaj Sagar Dam , Banswara

3.    Bisalpur Dam, Tonk

4.    Kota Barrage, Kola

5.    Rana Pratap Sugar Dam, Chittorgarh

6.    Bhim Sugar Dam, Jhalawar


Methods of Water Purification

Traditional

1.  Filtration 

2.  Boiling

3.  Sedimentation

Modern

1.  R.O. System






Ques. A.  Write true or false against the following statements-

1.  Baolis are known as Stepwells .

2.  Rainwater cannot be conserved.

3.  There is plenty of water on the earth, misuse of water is not an issue.

4.  Water used for drinking purpose is called Potable water.

5.  Dams are reserve areas of water constructed across a pond.
Ques. B.  Fill in the blanks -

1. Indira Gandhi Canal provides water to state of ................ .

2.  The main source of water on the earth is river and ............ .

3. R.O. is a method of purification of ............. .

4.  On the river Mahi, Dam has been constructed in ...................district.

5.  A well is circular in shape and a step well is ..................... in shape.

6.  Water is purified by filtration, boiling and ................ .

Ques. C.  Classify the following sources of water as surface water or groundwater 

1.   Lake 

2.   Wells 

3.   Ponds 

4.   Tubewell 

5.   River 

6.   Step wells

7.   Oceans 


Ques. D.   Answer the following questions -

Q. 1. Define Rahat.  

Q.2.  What do you understand by term Irrigation?

Q.3.  Define two modern method of irrigation. 

Q. 4. What are Canals ? 

Q. 5. How can we minimise the wastage of water during irrigation ? 






Important Links





https://evskkgoenka.blogspot.com/2021/06/Plant-World-EVS-kkgoenka.html


https://evskkgoenka.blogspot.com/2021/06/Universe-EVS-kkgoenka.html







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