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Soil Solution a solution is a liquid made up of a mixture
of several substances, of which one, generally more abundant, is called
the solvent, and the others, the dissolved substances. In the soil,
the solvent is water and the substances dissolved are ions, most of which
are found in plant ash. The soil solution can be collected in the laboratory
by slow watering or in the field by drainage of lysimeters. It constantly
varies with climate and biological phenomena. A permanent exchange exists
between the ions retained by the adsorption complex and the ions existing
in the soil solution. Soil solution is in general concentrated in arid
and semiarid regions due to low rainfall. As a sub-humid sub-tropical
country, the concentration of soil solution in Bangladesh is generally
low. [Sirajul Hoque] |
