Description : The water, retained by the soil in capillary pores (micropores), against gravity (-1/3 to - 31 bar) by the force of surface tension
Last Answer : Ans.Capillary water
Description : In the subtract mode, which portion of the problem is complemented?
Last Answer : Subtrahend.
Description : The chief reason why digital computers use complemented subtraction is that it (A) Simplifies the circuitry. (B) Is a very simple process. (C) Can handle negative numbers easily. (D) Avoids direct subtraction.
Last Answer : Ans: C Using complement method negative numbers can also be subtracted.
Description : Downward movement of nutrients and salts from the root zone with the water
Last Answer : Ans.Leaching
Description : Vertical movement of water or downward movement of water from different soil layer is called as
Last Answer : Ans.Percolation
Description : What are the types of soil movement in the process of wind erosion?
Last Answer : Ans.Saltation, Suspension and Surface creep
Description : Pick out the wrong statement. (A) The binary diffusivity in liquids is of the order of 10 -5 cm2 /sec (B) Molecular diffusion in solid is much faster than that in liquids ( ... Poiseuille's law, the permeability decreases with increase in temperature for flow of a gas through a given capillary
Last Answer : (B) Molecular diffusion in solid is much faster than that in liquids
Description : Detachment and transportation of top soil particles by wind and or by water is known as.
Last Answer : Ans.Soil erosion
Description : What is the concentration of solution in ppm if 2 kg of 2,4-D is mixed with 1000 lit of water?
Last Answer : Ans.2000
Description : The chemicals used to check transpiration losses of water
Last Answer : Ans.Antitranspirents
Description : Which is accumulated in the leaves of water stressed plants
Last Answer : Ans.ABA
Description : The moisture deficit condition, results when the amount of water vapour available in the soil is not sufficient to meet the demand of potential evapo-transpiration
Last Answer : Ans.Drought
Description : Water harvesting in situ is known as
Last Answer : Ans.Runoff farming (VII) Dryland Agriculture
Description : Salt content in irrigation water evaluated as best quality
Last Answer : Ans.0.2 to 0.5 g/lt
Description : The ratio of the crop yield to the total amount of water used for irrigation is called, measured in kg/ha-cm is
Last Answer : Ans.Water use efficiency
Description : What will be CPE value when irrigation is scheduled at 0.8 IW/CPE with 6.0 cm depth of irrigation water?
Last Answer : Ans.7.5 cm or 75 mm
Description : The period when water requirement is maximum is called as
Last Answer : Ans.Critical stages of water requirement
Description : Water requirement of maize and groundnut are
Last Answer : Ans.50-80 cm
Description : Water requirement of cotton crop
Last Answer : Ans.70-130 cm
Description : Water requirement of sugarcane
Last Answer : Ans.150-250 cm
Description : Water requirement of wheat, sorghum, soybean and tobbaco are
Last Answer : Ans.45-65 cm
Description : Water requirement of rice is
Last Answer : Ans.90-250 cm
Description : The consumptive use of water is equal to
Last Answer : Ans.ET + Mw
Description : 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.
Last Answer : Ans.Water requirement of a crop
Description : The process in which soil water lost from leaves of plants in the form of vapour and enters the surrounding atmosphere.
Last Answer : Ans.Transpiration
Description : A diffusive process by which liquid water in the form of vapour is lost in the atmosphere
Last Answer : Ans.Evaporation
Description : When water is held tightly as thin film around soil particles by adsorption forces and flows at gravity of > -31 bar, is called
Last Answer : Ans.Hygroscopic water
Description : The water, that moves downward freely under the influence of gravity (< 1/3 bar) beyond the root zone
Last Answer : Ans.Gravitational water
Description : The amount of soil moisture or water content held in soil after excess water has drained away is called
Last Answer : Ans.Field capacity (FC)
Description : The water content between Field capacity (-1/3 bar) to PWP (-15 bar) is called
Last Answer : Ans.Available water
Description : The saving of water in sprinkler and drip irrigation methods as compared to surface irrigation methods
Last Answer : Ans.25-50%and 50-70%water, respectively.
Description : Discharge rate of water per dripper is
Last Answer : Ans.1-4 litre/hrs
Description : Micro irrigation method, in which water is applied as drop form through emitters
Last Answer : Ans.Drip method
Description : The rate of water delivery in sprinkler system is
Last Answer : Ans.>1000 litre/hrs.
Description : Micro irrigation method, in which water is applied as spray
Last Answer : Ans.Sprinkler method
Description : The most common water flow measuring device which measures water flow in open conduit is
Last Answer : Ans.Parshall/Venturi flume
Description : Venturi meter is used to measure water, if
Last Answer : Ans.Water flow from the pipe
Description : For measuring uniform flow of water, weirs used are
Last Answer : Ans.Rectangular and Trapezoidal weir
Description : Volumetric method of water measurement are
Last Answer : Ans.Furrows, Sprinklers and Drippers
Description : The process of determining when to irrigate and how much water to apply is termed as
Last Answer : Ans.Irrigation scheduling
Description : The quantity of water (gm) necessary for a plant to produce 1 kg of dry matter is known as
Last Answer : Ans.Transpiration coefficient
Description : The percentage of applied irrigation water stored in the soil and made available for consumptive use by the crop
Last Answer : Ans.Irrigation Efficiency
Description : The total depth of water (cm) required y a crop during its duration in the field
Last Answer : Ans.Delta
Description : Volume or quantity of water required for irrigation to bring a crop to maturity
Last Answer : Ans.Duty of water
Description : The flow of excess water from the field after saturation of soil.
Last Answer : Ans.Runoff
Description : Horizontal flow of water in irrigation channels or through canals is known as
Last Answer : Ans.Seepage
Description : First entry of water from the upper layer of soil is known as
Last Answer : Ans.Infiltration
Description : The artificial application of water to supply moisture essential to plant growth is termed as
Last Answer : Ans.Irrigation
Description : The deep water rice are
Last Answer : Ans.Punkaj, Jagannath
Description : A branch of agricultural science which deals with principles and practices of soil, water and crop management.
Last Answer : Ans.Agronomy