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 crops leave the field exhaustive after growing?
Last Answer : Ans.Exhaustive Crops
Description : The good physical condition of soil after tillage is
Last Answer : Ans.Tilth
Description : Subsidence results due to the constant or excess removal of ground water deplete the water table and increases the area of ____________. (A) Water table (B) Ground surface (C) Zone of saturation (D) Vadose zone
Last Answer : (D) Vadose zone
Description : The most common water flow measuring device which measures water flow in open conduit is
Last Answer : Ans.Parshall/Venturi flume
Description : For measuring uniform flow of water, weirs used are
Last Answer : Ans.Rectangular and Trapezoidal weir
Description : Horizontal flow of water in irrigation channels or through canals is known as
Last Answer : Ans.Seepage
Description : The water content between Field capacity (-1/3 bar) to PWP (-15 bar) is called
Last Answer : Ans.Available water
Description : The total depth of water (cm) required y a crop during its duration in the field
Last Answer : Ans.Delta
Description : Detachment and transportation of top soil particles by wind and or by water is known as.
Last Answer : Ans.Soil erosion
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 : 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 : 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, 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 : 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 : Vertical movement of water or downward movement of water from different soil layer is called as
Last Answer : Ans.Percolation
Description : First entry of water from the upper layer of soil is known as
Last Answer : Ans.Infiltration
Description : A branch of agricultural science which deals with principles and practices of soil, water and crop management.
Last Answer : Ans.Agronomy
Description : Such weeds, that are grown in cultivated field?
Last Answer : Ans.Obligate weeds
Description : The method in which field divided into number of strips by bunds of around 15 cm height is
Last Answer : Ans.Border strip method
Description : Two or more than two crops of different heights cultivated simultaneously on the same field is called as
Last Answer : Ans.Multistoreyed/Multitired/Multi-level cropping
Description : One crop variety grown alone in pure stands at normal density in a field
Last Answer : Ans.Sole cropping
Description : Which bacterium is used for nitrogen fixation in sugarcane field?
Last Answer : Ans.Acetobactor diazotrophicus
Description : The most frost affected crop among all field crops?
Last Answer : Ans.Gram
Description : Grassy weed in barley field can be effectively controlled by
Last Answer : Ans.Both Isoproturon and 2,4-D
Description : Zinc and sulphates deficiency in wheat field reported in
Last Answer : Ans.Punjab
Description : Common herbicide used in rice crop field?
Last Answer : Ans.Anilophos and Butachlor.
Description : Most dominated weed species in rice field is
Last Answer : Ans.Echinochloa spp.
Description : Gas emitted from rice field is
Last Answer : Ans.CH4 (Methan).
Description : The nursery area required for providing seedlings for transplanting 1 ha rice field
Last Answer : Ans.1000 m2 (1/10 ha)
Description : Optimum depth of sowing for most of field crops
Last Answer : Ans.3-5 cm
Description : The Indian originated field crops are
Last Answer : Ans.Arhar, Mung, Urd, Cotton, Jute, Kodo, Kutki, Oat etc.
Description : The most popular mechanical measure to control soil erosion and conserve is
Last Answer : Ans.Contour Bunding
Description : About 50-75% of soil erosion by wind is carried out by
Last Answer : Ans.Saltation
Description : What are the types of soil movement in the process of wind erosion?
Last Answer : Ans.Saltation, Suspension and Surface creep
Description : A period in which the available soil moisture is enough to meet the evapotranspiration requirement of dry land crops
Last Answer : Ans.Length of growing period
Description : The moisture content of a soil at which plants permanently wilt and will not recover.
Last Answer : Ans.Permanent wilting point (PWP)
Description : Which of the following is a method of indirect measurement of soil moisture?
Last Answer : Ans.Neutron moisture meter
Description : Soil moisture content is determined by
Last Answer : Ans.Tensiometer (at 0.85 bar)
Description : Soil crusting reduces
Description : The cropping system beneficial to prevent soil erosion due to winds is
Last Answer : Ans.Strip cropping
Description : Which of the following rotations is likely to leave soil richer in organic matter?
Last Answer : Ans.Maize – Oats - Clovers
Description : Potato crop favours the soil for best growth
Last Answer : Ans.Sandy loam soil
Description : The best soil for cultivation of cotton
Last Answer : Ans.Black cotton soil
Description : Most suitable soil for groundnut cultivation
Description : Best soil for cultivation of chickpea?
Last Answer : Ans.Light alluvial soil (a loose and well aerated soil)
Description : Rice varieties suitable for Saline-alkaline soil are
Last Answer : Ans.CSR-10, CSR-13, CSR-27
Description : Anaerobic environment in rice soil is responsible for gaseous loss of fertilizer nitrogen by
Last Answer : Ans.Denitrification
Description : A system of tillage in which organic residues are not inverted into the soil and used as a protective cover against erosion and evaporational losses of soil moisture?
Last Answer : Ans.Conservation tillage or stubble mulch tillage
Description : The tillage referred as no tillage in which the crop is planted in unprepared soil
Last Answer : Ans.Zero tillage