Irrigation Water Management One Liner For Competitive exam

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Quest.The artificial application of water to supply moisture essential to plant growth is termed as

Quest.First entry of water from the upper layer of soil is known as

Quest.Vertical movement of water or downward movement of water from different soil layer is called as

Quest.Horizontal flow of water in irrigation channels or through canals is known as

Quest.The flow of excess water from the field after saturation of soil.
Ans.Runoff(Water Management One Liner)

Quest.Downward movement of nutrients and salts from the root zone with the water

Quest.Life saving irrigation is also known as
Ans.Contingency irrigation

Quest.Volume or quantity of water required for irrigation to bring a crop to maturity
Ans.Duty of water

Quest.The total depth of water (cm) required y a crop during its duration in the field

Quest.The percentage of applied irrigation water stored in the soil and made available for consumptive use by the crop
Ans.Irrigation Efficiency(Water Management One Liner)

Quest.Soil crusting reduces

Quest.Average annual rainfall of India is about
Ans.400 Mha.m

Quest.75% of rainfall is received by
Ans.S-W monsoon period (June-Sept)

Quest.Biggest river basin of India

Quest.The quantity of water (gm) necessary for a plant to produce 1 kg of dry matter is known as
Ans.Transpiration coefficient(Water Management One Liner)

Quest.The process of determining when to irrigate and how much water to apply is termed as
Ans.Irrigation scheduling

Quest.Irrigation is applied to the crop at
Ans.50%soil moisture depletion stage

Quest.Soil moisture content is determined by
Ans.Tensiometer (at 0.85 bar)

Quest.PF refers to
Ans.Logarithm of soil moisture tension

Quest.Which of the following is a method of indirect measurement of soil moisture?
Ans.Neutron moisture meter(Water Management One Liner)

Quest.Volumetric method of water measurement are
Ans.Furrows, Sprinklers and Drippers

Quest.For measuring uniform flow of water, weirs used are
Ans.Rectangular and Trapezoidal weir

Quest.Venturi meter is used to measure water, if
Ans.Water flow from the pipe

Quest.The most common water flow measuring device which measures water flow in open conduit is
Ans.Parshall/Venturi flume

Quest.Irrigation method suitable for lowland rice and jute
Ans.Flooding(Water Management One Liner)

Quest.Most common method of surface irrigation to irrigate groundnut and pulses
Ans.Check basin

Quest.Ring basin method is suitable for
Ans.Fruit trees

Quest.The method in which field divided into number of strips by bunds of around 15 cm height is
Ans.Border strip method

Quest.The method, suitable for crops i.e. Sorghum, cotton, maize, tobacco, potato, sugarcane etc is
Ans.Furrow method

Quest.Micro irrigation method, in which water is applied as spray
Ans.Sprinkler method(Water Management One Liner)

Quest.Irrigation method, suitable for undulating land, sandy soils and Vegetable and fruit crops
Ans.Sprinkler method

Quest.Pressure, applied in sprinkler irrigation system
Ans.>2.5 bar

Quest.The rate of water delivery in sprinkler system is
Ans.>1000 litre/hrs.

Quest.Drip Irrigation is discovered at

Quest.Drip Irrigation method is also known as
Ans.Trickle irrigation(Water Management One Liner)

Quest.Micro irrigation method, in which water is applied as drop form through emitters
Ans.Drip method

Quest.Drip method is suitable for
Ans.Wider spaced orchard crops, sugarcane and for saline soils

Quest.Discharge rate of water per dripper is
Ans.1-4 litre/hrs

Quest.The saving of water in sprinkler and drip irrigation methods as compared to surface irrigation methods
Ans.25-50%and 50-70%water, respectively.

Quest.Which irrigation method has highest irrigation efficiency?
Ans.Drip method(Water Management One Liner)

Quest.The water content between Field capacity (-1/3 bar) to PWP (-15 bar) is called
Ans.Available water

Quest.The amount of soil moisture or water content held in soil after excess water has drained away is called
Ans.Field capacity (FC)

Quest.The moisture content of a soil at which plants permanently wilt and will not recover.
Ans.Permanent wilting point (PWP)

Quest.The water, that moves downward freely under the influence of gravity (< 1/3 bar) beyond the root zone
Ans.Gravitational water

Quest.The water, retained by the soil in capillary pores (micropores), against gravity (-1/3 to – 31 bar) by the force of surface tension
Ans.Capillary water(Water Management One Liner)

Quest.When water is held tightly as thin film around soil particles by adsorption forces and  flows at gravity of > -31 bar, is called
Ans.Hygroscopic water

Quest.Capillary movement of water is complemented by
Ans.Root extension

Quest.A diffusive process by which liquid water in the form of vapour is lost in the atmosphere

Quest.The process in which soil water lost from leaves of plants in the form of vapour and enters the surrounding atmosphere.

Quest.The quantity of water needed for normal crop growth and yield in a period of time to a place and may be supplied by precipitation or by irrigation or by both.
Ans.Water requirement of a crop(Water Management One Liner)

Quest.The consumptive use of water is equal to
Ans.ET + Mw
Quest.Water requirement of rice is

Ans.90-250 cm

Quest.Water requirement of wheat, sorghum, soybean and tobbaco are
Ans.45-65 cm

Quest.Water requirement of sugarcane
Ans.150-250 cm

Quest.Water requirement of cotton crop
Ans.70-130 cm(Water Management One Liner)

Quest.Water requirement of maize and groundnut are
Ans.50-80 cm

Quest.The period when water requirement is maximum is called as
Ans.Critical stages of water requirement

Quest.What will be CPE value when irrigation is scheduled at 0.8 IW/CPE with 6.0 cm depth of irrigation water?
Ans.7.5 cm or 75 mm

Quest.The ratio of the crop yield to the total amount of water used for irrigation is called, measured in kg/ha-cm is
Ans.Water use efficiency

Quest.Salt content in irrigation water evaluated as best quality
Ans.0.2 to 0.5 g/lt(Water Management One Liner)

Quest.The permissible and normal limit of EC, RSC, SAR (meq 1
–1) and Boron content (ppm)
Ans.2–4, < 2.5, < 10 and <3, respectively.

Quest.Nitrate levels in drinking water above __ mg per litre are considered as a human health hazard.

Quest.The process of removal of excess water from the field to ensure a favourable salt balance in the soil
Ans.Agricultural drainage

Quest.In a waterlogged soil, the concentration of ___ is high

Quest.The root developed due to water logging in most of the crops
Ans.Adventitious root(Water Management One Liner)

Quest.Under water logged conditions, which nutrients are found deficient for the crops
Ans.Both Zn and Cu

Quest.The depth of water (cm) to be drained in 24 hours period from the entire drainage area.
Ans.Drainage coefficient

Quest.Drainage of one ha cm (105 lt) in 24 hrs is equal to
Ans.1.157 litre/sec

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