Soil
It is a "Latin word "comes from "Solum"which means floor. Soil is formed by the disintegration of of Rock and mineral. it takes among 800 to 1000 years for formation of soil. it is very slow process.
Soil is composed to of 3 phases
- solid :mineral and humus
- liquid :soil water
- gas:soil air
Soil is complex body formed by a various component
the following component are :
- minerals obtain form naturally on earth.
- Organic matter by decomposition of of animal and plant waste
- water obtained form atmosphere help in reaction of soil.
- Air obtain form atmosphere help in reaction of root and chemical in soil.
- organism such as warm insect microbes help in formation of soil
Fig of componet of soil on volume basis
In 5%of humus these component take a part
Fig of component of humus
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