Calcite, Dolomite and Hornblends are:
A.Calcium minerals
B.Potassium minerals
C.Sulphur minerals
D.None of these
Category: Soil Science Mcqs
Alkali soils are generally found in:
A.Sub-humid climate
B.Arid and semi-arid climate
C.Temperate climate
D.None of these
Absorption of ions in plants occurring with the aid of metabolic energy is termed:
A.Passive absorption
B.Active absorption
C.Metabolic absorption
D.Mass flow absorption
Anaerobic environment of paddy soil is responsible for gaseous loss of fertilizer nitrogen by:
A.Ammonification
B.Nitrification
C.Denitrification
D.Volatilization
Quantity of single super phosphate needed for applying 80 kg P2O5/ha to sugarcane will be:
A.250 kg
B.500 kg
C.750 kg
D.1000 kg
Among the fruits, lemon, apple, plum have been placed in the _____ salt tolerance group.
A.High
B.Low
C.Medium
D.None of these
According to land capability classification, the soils, which are not suitable for crop cultivation, belong to:
A.Class I
B.Class III
C.Class IV
D.Class VIII
Zinc deficiency occurs in crops growing in soils having high phosphorous:
A.Light soils
B.Calcareous soils
C.Soils low in phosphorous
D.Soil having pH 7.5
Amount of heat required to raise temperature of 1 gm soil from 14 to 15 ?C is known as:
A.Heat capacity
B.Specific heat
C.Thermal conductivity
D.None of the above
Black soils ______ in organic matter and high in bases:
A.Poor
B.Medium
C.High
D.None of these
