Quest.The artificial application of water to supply moisture essential to plant growth is termed as
Ans.Irrigation
Quest.First entry of water from the upper layer of soil is known as
Ans.Infiltration
Quest.Vertical movement of water or downward movement of water from different soil layer is called as
Ans.Percolation
Quest.Horizontal flow of water in irrigation channels or through canals is known as
Ans.Seepage
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
Ans.Leaching
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
Ans.Delta
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
Ans.Infiltration
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
Ans.Ganga
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
Ans.Israel
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
Ans.Evaporation
Quest.The process in which soil water lost from leaves of plants in the form of vapour and enters the surrounding atmosphere.
Ans.Transpiration
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.
Ans.10
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
Ans.Methane
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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