Description : The most dominant soil order of India
Last Answer : Ans. Entisol
Description : Commonly followed soil particle classified in India is
Last Answer : Ans. International Society of Soil Science (ISSS)
Description : Large portions of the earth with similar climate, soil, plant and animal life community is known as
Last Answer : Ans. Biosphere
Description : The soil, air and seed borne disease of wheat
Last Answer : Ans. Kernal bunt (Neovossia indica)
Description : The soil borne disease of rice
Last Answer : Ans. Sheath blight of rice (Rhizoctonia oryzae)
Description : Nutrients absorbed by plants from soil solution are carried upward through the
Last Answer : Ans. Xylem
Description : The cause of most of the gaseous interchange in soil
Last Answer : Ans. Diffusion
Description : Which of the plant species can be suggested on saline soil?
Last Answer : Ans. Haloxylon salicornium (II) Biochemistry
Description : The crops prefer acidic soil
Last Answer : Ans. Rice, tea and potato
Description : Method used for the determination of lime requirement of an acid soil is
Last Answer : Ans. Shoemaker’s method
Description : The saline – alkali soil is also known as
Last Answer : Ans. Usar
Description : Alkaline soil is also called as
Last Answer : Ans. Solanetz and Black alkali
Description : Saline soil is also called as
Last Answer : Ans. Solan chalk and White alkali
Description : The soil, which have 8.5 indicates soil is
Last Answer : Ans. Alkaline
Description : Immobile element in soil is
Last Answer : Ans. Phosphorus
Description : In waterlogged rice field, atmospheric nitrogen can be fixed to the soil by
Last Answer : Ans. BGA
Description : Conversion of soil nitrate into gaseous nitrogen is
Last Answer : Ans. Denitrification
Description : Conversion of NH4 to NO2 in soil is brought out by
Last Answer : Ans. Nitrosomonas
Description : Azatobactor can fixes atmospheric nitrogen/ha to the soil.
Last Answer : Ans. 20-30 kg
Description : Rhizobium fixes atmospheric nitrogen/ha to the soil
Last Answer : Ans. 50-100 kg
Description : The method used to determine available phosphorus from soil is
Last Answer : Ans. Olsen’s method
Description : The medium range of available N in soil
Last Answer : Ans. 280-560 kg/ha
Description : The phosphatic fertilizer suitable for acid soil
Last Answer : Ans. Bone meal (23-30%P2O5 )
Description : The fertilizer which destroys soil aggregates
Last Answer : Ans. Sodium nitrate
Description : A practice of turning un-decomposed fresh green plant tissue into the soil to improve fertility status and physical structure of the soil.
Last Answer : Ans. Green Manuring
Description : The capacity of the soil to produce plants under a specified programme of management and it is expressed in terms of yields
Last Answer : Ans. Soil Productivity
Description : The inherent capacity of the soil to supply nutrients to plants in adequate amount and in suitable proportions
Last Answer : Ans. Soil Fertility
Description : The most deficient micronutrient in the Indian soil is
Last Answer : Ans. Zn
Description : Red soil is red coloured due to
Last Answer : Ans. Ferric oxides
Description : Black soil shows black colour due to compound
Last Answer : Ans. Mn
Description : The soil deficient in nitrogen content
Last Answer : Ans. Black soil
Description : Black soil contains the clay mineral
Last Answer : Ans. Montmorillonite clay (2:1)
Description : Newly formed alluvial soil is called
Last Answer : Ans. Khadar
Description : The soil having more than 30% organic matter is placed in
Last Answer : Ans. Histosol
Description : Black soil belongs the soil order
Last Answer : Ans. Vertisol
Description : The smell of soil after fresh shower is due to
Last Answer : Ans. Actinomycetes.
Description : The C : N ratio of the soil are fairly constant between
Last Answer : Ans. 10 : 1 to 12 : 1
Description : Mechanical analysis of soil is estimated by
Last Answer : Ans. Stock’s law
Description : The density of soil water is maximum at
Last Answer : Ans. 4°C
Description : The capacity of the soil to change its shape under moist conditions
Last Answer : Ans. Soil Plasticity
Description : Soil colour is determined by
Last Answer : Ans. Munsell Colour chart
Description : Soil structure proving less porosity in soil
Last Answer : Ans. Platy
Description : The best agricultural soil structure is
Last Answer : Ans. Crumby/Spheroidal
Description : The arrangement of primary particles of soil
Last Answer : Ans. Soil structure
Description : The weight of one hectare of surface soil (O-15 cm) in kilograms
Last Answer : Ans. 2.24×10 6 kg/ha
Description : A field soil sample weighing 60 g, lost12 g on over dying. What is the moisture percent on dry weight basis?
Last Answer : Ans. 25%
Description : The soil having PD 2.50 g/cc and BD 1.25 g/cc will have _____ % porosity.
Last Answer : Ans. 50
Description : The formulae of particle density of soil
Last Answer : Ans. PD (g/cc) =
Description : Bulk density of normal soil is
Last Answer : Ans. 1-1.6 g/cc
Description : The formulae of bulk density of soil
Last Answer : Ans. BD (g/cc) =