irrigation eng

7/28/2019 Irrigation Eng

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IRRIGATION ENGINEERING

Prof . Sandip Ajmire

M. Tech.


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UNIT - I

AS PER RTMNU NAGPUR


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POINTS TO BE COVERED

1.1 DEFINATION

1.2 NECESSITY

1.3 SCOPE OF IRRIGATION SCIENCE 1.4 BENEFITS OF IRRIGATION

1.5 ILL-EFFECTS OF IRRIGATION

1.6 TYPES OF IRRIGATION


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1.1 DEFINATION

Irrigation may be defined as the process of

artificially supplying water to soil for raising

crops.


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1.2 NECESSITY

LESS RAINFALL

NON UNIFORM RAIN FALL

COMMERTIAL CROPS WITH ADDITINOL WATER CONTROLLED WATER SUPPLY


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1.2 NECESSITY

LESS RAINFALL

When the total rainfall is less than the needed

for the crop, artificial supply is necessary.

Water is convey from more water available

area to low intensity.

Indira Gandhi canal in Rajasthan.


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1.2 NECESSITY

NON UNIFORM RAIN FALL

The rainfall in a particular area may not be

uniform over the crop period .

During the early periods of the crops, rain may

be there, but no water is available at the end,

at the end of season.


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1.2 NECESSITY

COMMERTIAL CROPS WITH ADDITINOL WATER

The rain fall may be sufficient for traditional

crop.

But crops like sugarcane need more water for

growth than traditional crop.


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1.3 SCOPE OF IRRIGATION SCIENCE

ENGINEERING ASPECT

AGRICULTURAL ASPECT


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ENGINEERING ASPECT

Storage, Diversion, or lifting of water

Conveyance of water to the Agricultural fields Application of water to agricultural fields

Drainage & relieving water logging

Developing of water power.


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AGRICULTURAL ASPECT

Proper depth of water necessary in single

application of water for various crops.

Distribution of water uniform & periodically.

Capacities of difrent soil for irrigation water flow

of water in soil .


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1.4 BENEFITS OF IRRIGATION

Increase in food production

Protection from famine

Cultivation of cash crops

Addition to the wealth of country

Increase in prosperity of people

Genration of Hydro-Electric power

Domastic & Industrial power supply

Inland Navigation


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1.4 BENEFITS OF IRRIGATION

Improvement of comunication

Canal Plantations

Improvement in the Ground water storage Aid in civilisation

General Devlopment of the country.


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1.5 ILL-EFFECTS OF IRRIGATION

Breeding places of mosquitoes

Water Logging

Damp clymate


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Types of Irrigation

Flow Irrigation

Perinal Irrigation

Induction Irrigation

DirectIRRIGATION

StorageIRRIGATION

Combined

Irrigation

Lift

Irrigation


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Perinal Irrigation

Water stored in Dams, Barrages, wires for

supplying water throughout season


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Induction irrigation

Induction Irrigation is carried out by Deep

Flooding and Through saturation of land to be

cultivated which is the drained off prior to the

planting of crop.

Depending upon the source from which water

is drawn , flow irrigation is sub-divided

Flow Irrigation

Perinal Irrigation

Induction Irrigation

Direct

IRRIGATI

ON

Storage

IRRIGATION

Combined

Irrigation


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QUTIONS ASKED IN RTMNU

What are the benefits & ill effects of

irrigation?


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October 2008

Describe the irrigation scheme detailing the

following

(a) Source

(b) Convenience system

Water application system

(d) drainage system


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October 2008 (6 marks)

Write advantages of irrigation.

Ans.:- Increase in food production

Protection from famine

Cultivation of cash crops

Addition to the wealth of country

Increase in prosperity of people

Generation of Hydro-Electric power Domestic & Industrial power supply

Inland Navigation


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May 2009 (6 marks)

Differentiate any two

(a) Sprinkler & drip irrigation system

(b) Flow irrigation & lift irrigation Perennial & inundation irrigation system.


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October 2009 (6 marks)

Explain briefly the development of irrigation in

since ancient times


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October 2011 ( 6 marks)

Explain briefly the necessity of irrigation in

India. What are the advantages of assuredirrigation.

Ans.:- LESS RAINFALL When the total rainfall is less than the needed

for the crop, artificial supply is necessary.

Water is convey from more water availablearea to low intensity.

Indira Gandhi canal in Rajasthan.


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irrigation eng

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