Organic compound
are compounds other than carbonates, which contain carbon as well as one of
their constituent element. Soil organic matter consists of living organisms
together with their decaying residues, some examples these organic matter are
roots, stems and leaves of higher plants, worms, anthropods and micro organisms
such as bacteria, algae and fungi.
The relatively
big animals physically break down some organic materials during their feeding the
micro-organisms by making use of their enzymes, breakdown the complex organic
compounds to humus complexes, which in turn cement soil particulars to
structural units. Therefore soil organic matter consist of a whole series of
substances ranging from decayed plant and animal remains through intermediate
products of decomposition to a more or less stable amorphous brown or black
substance varying resemblance to the residues from which it is generated. The more
or less stable amorphous brown or black substance is called humus.
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