Soil Science Quiz 1

A surface horizon, which has very high organic matter, is:

A sub-surface horizon with highly oxidized material and 1:1 type clay minerals is known as:

A sub-surface horizon in which the accumulation of organic matter and clay occurs just below the plough:

A soil, which has pH more than 8.5, ESP more than 15 and EC less than 4 mmhos/cm at 25?C, is called:

A soil which has pH less than 8.5, ESP less than 15 and EC more than 4 mmhos/cm at 25 ?C is called:

A' horizon of the soils also designated as:

A' value is given by:

A combination of many taxonomic units like soil series, phase or types is called:

A pH value of 6.0 indicates that the soil reaction is:

A soil absorbs about _____ of incoming solar radiation: