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a er app ca on

WRE I

UNIT- VI

roBE (CIVIL), ME(ENV.),PhD(persuing)

. . ,


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Contents

ySprinkler irrigation


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1] Drip irrigationyAlso known as trickle irrigation

yDrip irrigation refers toapp ca on o wa er n sma

than 12 Lit/hr as drops to the

zone o t e p ants t roug a

with emitters.


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Componentsi) HEAD EQUIPMENTSy

a. Water source - Su sur ace tany -

delivery non return valve, gate valve

yc. er s a on - an er, screenfilter, manifold and pressure gauge

yd. Fertiliser application - Fertiliser


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ii) DISTRIBUTION SYSTEM

y -. ,

main, laterals, minor tubes and end caps.

y . r ppers - ressure correspon ng

drippers.y g. Valves - Non-return valve (NRV), Ball

, ,valves

y . Water meter - I necessary


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Types of FiltersSand filter

SCREEN FILTER


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Accessories


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yMERITS

y1. Increased water use efficiency

y2. Better crop yieldy . n orm an e er qua y o

the cro sy4. Efficient and economic use or

fertilizer through fertigation

y5. ess wee grow


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y6. Minimum damage to the soil

y . Avoidance of leaf burn due to

saline soily . sage n un u a ng areas an ess

ermeable soily9. Labour saving

y10. High uniformity suitable for

y11. No over irrigation


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y

11. Nutrients reservationy12. No soil erosion

y13. Suitable for any topography.y14. Increase in net irrigable area

y15. Cu tivation o cas crops

y1 . ar a on n app ca on.


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yDEMERITS

y

1. C ogg ng o r ppersy2. em ca prec p a on

.front


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1] Sprinkler irrigation

,

water is sprayed into the air anda owe to a on t e groun sur ace

somewhat resemblin rainfall. Thespray is developed by the flow of

orifices or nozzles. The pressure is

usually obtained by pumping.


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y Advantages of sprinkler irrigation

y

therefore no conveyance loss

y Suitable for irrigating crops where the plantpopu a on per un area s very g . s mos

suitable for oil seeds and vegetable cropsy Water saving

y Closer control of water a lication

y convenient for giving light and frequent

y

higher water application efficiency


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y Increase in yield

y May also be used for undulating area

y Saves land as no bunds etc. are required

the source can be irrigatedy Possibility of using soluble fertilizers and

chemicals

y Less problem of clogging of sprinklerzz w


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Traveling Volume Gun Sprinkler Irrigating fromTraveling Volume Gun Sprinkler Irrigating from

La oonLa oon


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Portable SolidPortable Solid--Set Sprinkler SystemSet Sprinkler System


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Fairway Runoff Research PlotsFairway Runoff Research Plots


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SideSide--Roll Sprinkler Lateral in PeanutsRoll Sprinkler Lateral in Peanuts


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Center Pivot System with Spray PadCenter Pivot System with Spray Pad


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Components

(ii) Tubings - main/ sub mains andatera s

iii Cou lers(iv) Sprinkler head

v t er accessor es suc as va ves,bends, plugs and risers.


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C i i li i f


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yConstraints in application of

(i) Uneven water distribution due to

high winds.vapora on oss w en opera ng

under hi h tem eratures.(iii) Highly impermeable soils are not

su a e.


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No wind

Elongated parallel pattern

( iii) M t i t


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(viii) More water requirement as

compare to r p rr gat on.

kg/cm2

).(x) Difficulty in irrigation during

w n n spr n er .


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UESTIONS

W it d t il d t d i i i ti Al


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Write detailed note on drip irrigation. Also

different components.

ov ov , mar s, ay ov

2006 ,10 marks)

Write detailed note on Sprinkler method of

irrigation. Also draw layout of sprinklerirrigation system showing different components.

M 2 r

Draw and discuss layout of a drip irrigation

.

(Nov 2009, 6 marks)

Discuss the drip irrigation and sprinkler


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Discuss the drip irrigation and sprinkler

.(May 2009, 7 marks)

Discuss the sprinkler irrigation system in

and suitability.

ay , mar s

Discuss the s rinkler irri ation s stem in

details with their advantages and.

(Nov 2010, 8 marks)


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