Description : Percentage concentration of CO2 in air and soil is
Last Answer : Ans. 0.030%and 0.25%
Description : Absorbed of water against a concentration gradient by using energy released from respiration is called as
Last Answer : Ans. Active absorption
Description : The salt concentration in pickle is maintained at
Last Answer : Ans. 8-10%
Description : The concentration of salt sufficient to preserve most of the food products
Last Answer : Ans. 15-25%
Description : The concentration of sugar required for preservation of fruits and jam
Last Answer : Ans. 66%
Description : Concentration of a nutrient in plant tissue where growth of the plant is slowed down
Last Answer : Ans. Critical concentration
Description : Strong solution having higher concentration
Last Answer : Ans. Hypertonic solution
Description : Maximum concentration of urea for foliar spray
Last Answer : Ans. 6%
Description : The negative logarithm of H+ ion concentration
Last Answer : Ans. Soil pH
Description : Solution whose strength or concentration is accurately known is termed as
Last Answer : Ans. Standard solution
Description : Instrument used for measuring concentration of ozone in air
Last Answer : Ans. Ozonometer
Description : The density of soil water is maximum at
Last Answer : Ans. 4°C
Description : Soil water is known as
Last Answer : Ans. Blue water
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 most important soil group of India
Last Answer : Ans. Alluvial Soils
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 most dominant soil order of India
Last Answer : Ans. Entisol
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