List of top Agronomy Questions on Irrigation Management: Types of Irrigation, Sources of Irrigation asked in ICAR AIEEA (PG)

'Pusa Kiran' is a variety of

A rice crop of 5 ha area was irrigated 10 times with 5 cm water per irrigation, find out the total quantity of water applied in cubic meter.

Read the following statements:
(A). In furrow irrigation method, short, near horizontal furrows can be used on flat land with a maximum slope of 2%.
(B). On steep sloping land, contour furrows can be used upto a maximum slope of 6%.
(C). A minimum of 0.05% slope is recommended to assist drainage in a furrow system.
(D). Border irrigation can be used on sloping land upto 2% slope on a sandy soil.
(E). Border irrigation can be used on sloping land upto 3% slope on a clay soil.
Choose the correct answer from the options given below:

Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).
Assertion (A): High Na-concentration in irrigation water may reduce oxygen supply to the root system.
Reason (R): High sodium content in irrigation water causes flocculation of soil particles.

Given below are two statements:
Statement (I): Capillary rise is responsible for loss of water from soil by evaporation.
Statement (II): Retention of water by soil against gravitation pull depends on two surface forces, namely, cohesion and adhesion.
In light of the above statements, choose the most appropriate answer from the options given below.

In neutron method used to measure soil moisture, the source of fast neutrons is a mixture

Match List-I with List-II

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One acre-foot water is equal to how many cubic meter water?

Read the following statements:
A). Water holding capacity of sandy soil is high as larger pores can hold more water.
B). Silty soils have medium to high water retentive capacity.
C). Clay soils have small size pores, thus have low water holding capacity.
D). Clay soil have poor aeration and poor drainage.
E). Water holding capacity of soil depends largely on its texture and organic matter present in it.
Choose the correct answer from the options given below:

Total depth of irrigation applied for a wheat crop of 90 days base period is 70 cm, what will be the duty of water.

Match List-I with List-II

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Given below are two statements:
Statement (I): The Qanats, the oldest known irrigation methods, were developed in Ancient Persia
Statement (II): The system comprises a network of canals and steeply sloping tunnels driven into sides of cliffs and steep hills for harvesting of rain water.
In light of the above statements, choose the most appropriate answer from the options given below.

Correct order, in decreasing trend, of reservoirs based on their capacity at full reservoir level (Mm\(^3\))

One cumec day is equal to

Water measuring device used for determining discharge from a piped irrigation system is usually

Given below are two statements:
Statement (I): On steeper sloping land, contour furrows can be used up to a maximum land slope of 5%.
Statement (II): In furrow irrigation, a minimum slope of 0.01% is recommended to assist drainage.
In light of the above statements, choose the most appropriate answer from the options given below.

If a soil has 10% less moisture than its field capacity, what will be depth of irrigation required to bring soil moisture level to field capacity for a soil having depth 0.4 m and bulk density 1.2 mega gram/\(\text{m}^3\)

The slope of the ground for the construction of border strip irrigation is:

Statement I: A surface irrigation event is composed of four phases namely, advance phase, storage phase, depletion phase and recession phase.
Statement II: In recession phase of surface irrigation, the depth of water applied to any point in the field is a function of opportunity time, length of time for which water is present on soil surface.
In light of the above statements, choose the correct answer from the options given below:

What is the efficiency (%) of sprinkler irrigation?

Following are the statements about common feature of drought avoidance in plants
A. Early stomata closure
B. Efficient root system
C. Lipid deposition on foliage
D. Reduction in water uptake
E. Straightening of leaves
Choose the correct answer from the options given below:

Following are the statements with respect to economization of irrigation water in rice
A. Rice should be cultivated on heavy soils with percolation above 5 mm per day
B. Subsoil loosening to enhance water flux to soil.
C. Rice should be grown in small isolated blocks to reduce seepage
D. Application of tank silt to light soils
E. Puddling to reduce soil permeability
Choose the correct answer from the options given below

Read the statements with respect to water management in maize
A. Most critical stage for irrigation is flowering period including tasseling, silking and pollination
B. Water deficit at flowering stage causes heaviest yield loss mainly due to reduction in grain size
C. Under the conditions of adequate irrigation water, irrigations should be applied at 25 % depletion of available soil moisture
D. Under the conditions of adequate irrigation water, irrigations should be applied at IW/CPE of 0.6 or 0.8 throughout growth period of crop
E. As maize is mostly grown in rainy season, applying irrigation is wasteful
Choose the correct answer from the options given below: