What is mean by soil profile? give the characteristics of different horizons observed in the soil profile.
Answers
Answer:
Given sufficient time, an undifferentiated soil will evolve a soil profile which consists of two or more layers, referred to as soil horizons. These differ in one or more properties such as in their texture, structure, density, porosity, consistency, temperature, color, and reactivity.
Answer:
The arrangement of the layers of the soil is known as soil profile.
Explanation:
1.O horizon =It is the top ,organic layer of soil , mostly of leaf litter and humus .
2.A horizon=This layer, is also called top soil ,is found below the O horizon.Seed germinate and plant grow in the dark coloured layer .It is made up of humus mixed with mineral particles .
3.B horizon=It is also called the Sub soil . This layer is beneath the A horizon and above the C horizon. It contains clay and mineral deposited, like iron , Aluminium oxide and calcium carbonate. It receives them, from the layer above it ,when mineralised water from the top soil.
4.C horizon=It is a layer beneath the B horizon and above the R horizon . It consists of slightly broken up bed rocks. Plant roots do not penetrate this layer and very little organic material is found in this layer.
5.R horizon= This consists of the weathered rock layer, called the bed rock. It exist beneath all the other layers .
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