Free Printable IRRIGATION

1.

1. The upper limit of the soil moisture available for the plant growth is ------

a)

PWP

b)

Field capacity

c)

Hygroscopic coefficient

d)

Ultimate wilting point

2.

2. pH measures the …………acidity of soil

a)

Exchangeable acidity

b)

Active acidity

c)

Salt replaceable acidity

d)

Residual acidity

3.

Crop logging is used in -------

a)

Sorghum

b)

Sugarcane

c)

Cotton

d)

Sugarbeet

4.

The area of saline soils in India is

a)

7.4 mha

b)

15 mha

c)

6 mha

d)

12 mha

5.

On which of the following rivers in Hirakud dam project located?

a)

Mahanadi

b)

Satluj

c)

Beas

d)

Narmada

6.

Size of milli watershed is ___

a)

100-1000 ha

b)

1000-10000 ha

c)

1-100 ha

d)

500-1000 ha

7.

The method of irrigation employed where surface is undulating?

a)

Flood irrigation

b)

Sprinkler irrigation

c)

Drip irrigation

d)

Furrow irrigation

8.

The most critical stage of maize from irrigation point of view is __

a)

Silking stage

b)

Tasseling stage

c)

Booting stage

d)

Dough stage

9.

The major force governing the unsaturated flow of water in the soil is ----

a)

Gravitational force

b)

Matric force

c)

Capillary force

d)

Both A & C

10.

Wet weight of a sample with can is 300 g and dry weight with can is 210 g. weight of empty moisture can is 55g. The moisture content of soil is ------(%)

a)

36.73

b)

45.63

c)

58.06

d)

63.69

11.

The relationship between dry matter of crop and evapotranspiration is___

a)

Linear

b)

Quadratic

c)

Symptotic

d)

NOTA

12.

The crop coefficient is maximum at -----

a)

Seedling stage

b)

Vegetative stage

c)

Reproductive stage

d)

Maturity stage

13.

Highly moisture sensitive stage for Sugarcane crop is -----

a)

Formative stage

b)

Harvesting stage

c)

Seedling stage

d)

Flowering stage

14.

One ha cm of water is equal to -----

a)

1000 litres

b)

10000 litres

c)

100000 litres

d)

100 litres

15.

The E in LEPA system of irrigation represents -----

a)

Efficiency

b)

Efficacy

c)

Energy

d)

Effect

16.

Point source system of Drip irrigation is widely used for -----

a)

Close growing crops

b)

Widely spaced crops

c)

high density crops

d)

both A&B

17.

Find out the water storage efficiency of a field (1 ha area) if water stored in the root zone and water delivered to the field are 15 mm and 20 mm respectively

a)

60%

b)

75%

c)

50%

d)

NOTA

18.

The water use efficiency of maize is ---- (kg/ha mm)

a)

9.0

b)

9.2

c)

8.0

d)

12.6

19.

Total depth of water required by a crop during the entire growing period is-----

a)

Duty

b)

Delta

c)

Base period

d)

Palco

20.

Irrigation water is considered safe if its RSC content is----

a)

<1.25

b)

>1.25

c)

<2.5

d)

>2.5

21.

Water coming out as domestic sewage or industrial waste is -----

a)

Grey water

b)

Blue water

c)

Green water

d)

Black water

22.

The pF at permanent wilting point is ----

a)

4.2

b)

4.5

c)

2.5

d)

2.8

23.

Cotton is irrigated at----

a)

25% DASM

b)

50% DASM

c)

15% DASM

d)

75% DASM

24.

Which of the following method of irrigation is highly suitable when using the saline water for irrigation?

a)

Border strip

b)

Furrow method

c)

Drip irrigation

d)

Ring basin

25.

Uniformity coefficient of sprinkler irrigation varies from -----

a)

1.0-2.0

b)

0.1-0.5

c)

0.6 - 0.9

d)

1.0 - 1.5

26.

A calibrated device for measuring the flow of water in open channel is ----

a)

V-notch

b)

Parshall flume

c)

Water meter

d)

Rectangular weir

27.

Irrigation in gram is recommended at ----

a)

Pre flowering and maturity stage

b)

Late flowering and maturity stage

c)

Pre flowering and pod formation stage

d)

Late flowering and pod formation stage

28.

Bone meal is highly suitable for ------

a)

Acidic soils

b)

alkali soils

c)

saline soils

d)

NOTA

29.

At field capacity, water is held at -----

a)

0.33 MPa

b)

3.00 MPa

c)

0.033 MPa

d)

30.00 MPa

30.

Water storage structures in tribal areas of Rajasthan are -----

a)

Johads

b)

Khadins

c)

Aharpynes

d)

Both A& B

31.

Empirical formula of water requirement is ---

a)

ET + CU + Metabolic requirements

b)

ET

c)

ET + CU

d)

ET + Application losses + special needs

32.

If only two irrigations are available, what are the stages to be irrigated in wheat?

a)

Flowering and dough stages

b)

Tillering and milking stages

c)

CRI and flowering stage

d)

CRI and dough stage

33.

Available moisture content at PWP of silt loam soil is----

a)

1-3%

b)

3-8%

c)

6-10%

d)

7-16%

34.

The moisture equivalent was introduced by ----

a)

Briggs and Mclane

b)

Briggs and Shantz

c)

Richards and Weaver

d)

Whitney

35.

Canopy temperature is measured by ------

a)

Hygrometer

b)

Irrometer

c)

Both B and C

d)

Infrared thermometer

36.

Rice can be survived under waterlogged conditions due to-----

a)

Presence of parenchymateous tissue

b)

Presence of oxidized conditions

c)

Presence of aerenchymateous tissue

d)

NOTA

37.

Hydraulic conductivity is measured in -----

a)

cm/hr

b)

dS/m

c)

cm/hr/day

d)

mm/m

38.

Medium irrigation project should have total cultural command area ----

a)

2000-10000 ha

b)

100-1000 ha

c)

10000-50000 ha

d)

10-100 ha

39.

Osmotic potential of pure water is ----

a)

1

b)

<1

c)

>1

d)

0

40.

The term water potential was coined by -----

a)

Briggz

b)

Watson

c)

Slater and taylor

d)

Mclane

41.

DPD is__

a)

Daily photosynthetic effect

b)

Daily Phosphorous effect

c)

Daily pressure deficit

d)

Diffusion pressure deficit

42.

Basin method of irrigation is more suitable for__

a)

Orchard crops

b)

Field crops

c)

Fodder crops

d)

Cash crops

43.

The EC of medium saline water is ----

a)

100-250 mmhos/cm

b)

250-750 mmhos/cm

c)

750-2250 mmhos/cm

d)

> 2250 mmhos/cm

44.

Transpiration is maximum at ---

a)

Night

b)

Early morning

c)

During sun set

d)

At 2:00 pm

45.

The use of tensiometer is confined upto metric potential of ----

a)

-0.2 bars

b)

-0.8 bars

c)

-0.6 bars

d)

-0.4 bars

46.

The neutron scattering method is not useful in estimating the moisture content in ---

a)

Organic soils

b)

Alluvial soils

c)

Lateritic soils

d)

Acidic soils

47.

In furrow method of irrigation, ---- of the area is wetted

a)

1/4^th of the furrow

b)

½ of the furrow

c)

3/4^th of the furrow

d)

4/5^th of the furrow

48.

It is proposed to schedule irrigation to wheat crop at CPE of 9 cm at IW/CPE ratio of 0.75. Depth of water to be applied is ----

a)

4.55

b)

5.45

c)

6.75

d)

6.90

49.

The total area of degraded land in India is estimated to be ----

a)

65 Mha

b)

93 Mha

c)

187 Mha

d)

156 Mha

50.

Predominant salt in saline water is ---

a)

Sodium carbonate

b)

Sodium chloride

c)

Calcium chloride

d)

Magnesium sulphate

51.

The amount of effective rainfall in Arid region is----(%)

a)

25

b)

50

c)

60

d)

70

52.

Stomatal closure of crops occurs when the water potential of soil reaches around ----

a)

-15 bars

b)

-4 to -6 bars

c)

-10 to -12 bars

d)

-1 to -5 bars

53.

Entry of water into soil is known as ----

a)

Infiltration

b)

Percolation

c)

Seepage

d)

Waterlogging

54.

The first phase of water erosion is ----

a)

Sheet erosion

b)

Rill erosion

c)

Gully erosion

d)

Splash erosion

55.

Haryali yojana is related to -----

a)

Soil management

b)

Crop management

c)

Air management

d)

Water management

56.

Specific heat of soil water is ----

a)

0.50 cal/g

b)

0.2 cal/g

c)

0.1 cal/g

d)

1.0 cal/g

57.

The book “Irrigation theory and practices” is written by__

a)

A.K.Singh

b)

A.M.Michael

c)

Tisdale

d)

N.V.Kanitkar

58.

The depth of water applied in the first irrigation to crop is -----

a)

Kor

b)

Comeup irrigation

c)

Palco

d)

Both A& C

59.

Ideal slope for furrow method of irrigation is -----

a)

5%

b)

1%

c)

0.1%

d)

3%

60.

Reference crop ET was proposed by ----

a)

Blaney and criddle

b)

Tanner

c)

Dastane and Sharma

d)

Doorenbos and Pruitt

61.

Instrument used to measure the humidity of the atmosphere

a)

Permeameter

b)

Parshall flume

c)

USDA open pan evaporimeter

d)

Psychrometer

62.

The infiltration rate 12.5-25.0 mm/hr is categorized as ----

a)

low

b)

Medium

c)

High

d)

Very high

63.

Under Saline-alkali soil, water scarce areas, suitable furrow method of irrigation is ------

a)

Flat furrow

b)

Alternate furrow

c)

Contour furrow

d)

Corrugated furrow

64.

Flooding method of irrigation is more suitable for ---

a)

Rice

b)

Berseem

c)

Sugarcane

d)

All of the above

65.

If rainfall is 60 mm and potential evapotranspiration is 90 mm, then moisture deficit index is ----

a)

33.33

b)

66.66

c)

50.00

d)

-33.33

66.

Method of irrigation more suitable for potato crop is ---

a)

Check basin

b)

Ring basin

c)

Furrow method

d)

Flooding

67.

Crop water use efficiency is equal to ----

a)

Y/WR

b)

WR/Y

c)

Y/WT

d)

ET/Y

68.

If EC of drainage water is 8 mhos/cm and EC of irrigation water is 1 mhos/cm, the leaching requirement will be -----

a)

10%

b)

8%

c)

12.5%

d)

15%

69.

Water left in the soil after 24-72 hrs of irrigation is known as -----

a)

Available water

b)

Field capacity

c)

PWP

d)

UWP

70.

From top 25% of effective root zone depth, how much quantity of total water extraction takes place by roots

a)

40%

b)

30%

c)

20%

d)

10%

71.

The ppm is equal to ------

a)

mg/l

b)

g/l

c)

Kg/l

d)

g/ml

72.

Main source of irrigation by canals is in ----

a)

Punjab

b)

Telangana

c)

Gujarat

d)

All of the above

73.

Total net irrigated area in India is-----

a)

93 mha

b)

85 mha

c)

143 mha

d)

68 mha

74.

For production of 1 kg dry matter in plants, how much amount of water is needed normally

a)

300-400 litres

b)

400-500 litres

c)

600-700 litres

d)

1000 litres

75.

Statement for questions from 75 to 77

If soil water content in the root depth at the start of irrigation is 15 cm for a soil with field capacity of 27 cm. Peak period consumptive use rate is 10 mm/day and irrigation efficiency is 75%

75. Gross irrigation requirement (cm) is-----

a)

10

b)

12

c)

16

d)

20

76.

Net irrigation requirement is ---- (cm)

a)

8

b)

12

c)

16

d)

20

77.

Irrigation period is ----- (days)

a)

9

b)

10

c)

11

d)

12

78.

Drip irrigation is highly useful in ------

a)

Humid region

b)

Sub humid region

c)

Arid region

d)

NOTA

79.

The total volume of water on melting of ice----

a)

Increases

b)

Decreases

c)

Remains constant

d)

First increases then decreases

80.

The instrument used for measuring the depth of water table is -----

a)

Lysimeter

b)

Peizometer

c)

Psychrometer

d)

Evaporimeter

81.

First irrigation commission was appointed in India in the year of------

a)

1880

b)

1901

c)

1921

d)

1891

82.

The average rainfall of India is -----

a)

939 mm

b)

1194 mm

c)

1015 mm

d)

756 mm

83.

“L” shaped soil moisture characteristic curve is observed in ---

a)

clay

b)

loam

c)

sandy

d)

both A&B

84.

Water requirement of maize crop is around -----

a)

200 cm

b)

625 cm

c)

100 cm

d)

62.5 cm

85.

--------Volume of sand used in soil cum sand mini plot technique which is used for scheduling of irrigation

a)

20%

b)

10%

c)

5%

d)

15%

86.

International Water Management Institute is located in ----

a)

Philippines

b)

China

c)

Srilanka

d)

South Africa

87.

Farming in which cosmic energies of nature could be utilized to enrich a natural source of nutrients is ----

a)

Natural farming

b)

Organic farming

c)

Biodynamic farming

d)

Inorganic farming

88.

The best soil for using the tensiometer is-----

a)

Clay soil

b)

Loam soil

c)

Silty soil

d)

Sandy soil

89.

Climatic data required to calculate crop coefficient (K_c) is-----

a)

Humidity

b)

Wind speed

c)

Solar radiation

d)

Both A&B

90.

The indicator plant used for determining the PWP under field condition is-----

a)

Sugarcane

b)

Rice

c)

Sunflower

d)

Wheat

91.

Generally ------ % of land is wasted for bunding under check basin method of irrigation

a)

5

b)

10

c)

15

d)

30

92.

Water use efficiency of drip irrigation system is -----

a)

60

b)

70

c)

80

d)

90

93.

In clay soils, ----

a)

FC=ME

b)

FC<ME

c)

FC>ME

d)

NOTA

94.

If gravimetric moisture content of soil is 15% and the bulk density is 1.4 g/cc, the volumetric moisture content is ----

a)

19%

b)

21%

c)

25%

d)

30%

95.

The water content of soil at which all the soil pores are filled with water is referred as----

a)

FC

b)

PWP

c)

Saturation

d)

Ultimate wilting point

96.

Data for the questions from 96-98

Wet weight of the soil sample is 240 g and oven-dry weight of soil sample is 200 g & bulk density of the soil is 1.4 g/cc and depth of the soil upto which moisture content is to be estimated is 50 cm.

96. Amount of water on dry weight basis is----

a)

28%

b)

20%

c)

16.66%

d)

25%

97.

Amount of water on volume basis is----

a)

28%

b)

20%

c)

16.66%

d)

25%

98.

Amount of water on depth basis is

a)

20 cm

b)

25 cm

c)

14 cm

d)

10 cm

99.

Saline soil are mainly found in -----

a)

Arid region

b)

Humid region

c)

Temperate region

d)

Sub humid region

100.

Which of the following is an automated method of surface irrigation?

a)

Check basin method

b)

Corrugated furrow

c)

Cablegation

d)

Drip irrigation

IRRIGATION

Total questions: 100

Worksheet time: 50mins

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