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Agronomy-5

Q.1
The ratio of mass weight of oven dry soil solids to the volume of soil gives the_____________.

Bulk density
Particle density
Porosity


Q.2
The total quantity of water required for a life period of a crop is________.
Duty
Delta
Critical stage


Q.3
Capillary in soil pores is due to____________.
Adhesion
Surface tension
Cohesion


Q.4
1 atmosphere = -------------- cm of water column.
1023
1032
1013


Q.5
Which of the following soil water is available for normal crop growth?
Capillary
Gravitational
Hygroscopic


Q.6
Poor quality irrigation water is not suitable for use in___________.
Sprinkler
Drip
Trickle

Q.7
Water saving in trickle irrigation method ranging ___________.

40-60 %
50-60%
40-70 %


Q.8
One of the highest gravity dam in the world__________.
Shivasamudram
Sardar sarovar
Bhakra Nangal


Q.9
The device used to measure daily loss of water through evaporation________.
VSWB Pan evaporimeter
USWB Pan Meter
USWB Class-I open pan evaporimeter


Q.10
Applying irrigation through shallow furrows is called_____ .
Furrow method
Corrugation
Alternate furrows


Q.11
When all the pores are filled with water than soil is to be said saturated it is known as________.
Standing water
Field capacity
MWHC


Q.12
Boron is toxic beyond ________ ppm in irrigation water for most of the field crops.
4
2
2.5


Q.13
Water use efficiency is higher in ______ crops.
C3
CAM
C4


Q.14
Metric potential is always______.
Zero
Negative
Positive


Q.15
Entry of water from the surface in to soil is termed as____________.
Infitration rate
Infiltration
Percolation


Q.16
The water lies between FC and PWP is known as _______water.
Free water
Available
Un available


Q.17
Salinity of irrigation water is measured in ________.
RAC
SAR
EC


Q.18
Artificial removal of excess water is called _______.
Drainage
Irrigation
Seepage


Q.19
One Cusec indicate ____.
28.32 litres/sec
1000 litres/sec
32.28 litres /sec


Q.20
Which of the following soils have longer strip of irrigation ?
Sandy
Clayey
Sandy loam


Q.21
Tensiometer is more suitable for ______soil.
Clay
Sandy
Silty


Q.22
The range of soil moisture(bars) at field capacity is________.
-0.6 to -0.5
-1 to -0.3
> -0.31


Q.23
In wheat crop the most critical stage for soil moisture is ____.
Tillring
Jointing
CRI


Q.24
Which crop among the following has the maximum duty of water?
Rice
Tobacco
Cotton


Q.25
Irrigation frequency depends on _________.
Soil
Crop
Both

Number of score out of 25 = Score in percentage =


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