Humus: definition and meaning

Humus: definition and meaning

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Humus is a dark-colored substance that forms in the soil following the partial decomposition of the animal or vegetable organic substance, through biological (especially bacterial) and chemical-physical processes. It takes on a colloidal nature and therefore has a strong absorbing power and an earthy and fibrous aspect.
Humus is an essential element for soil fertility for several reasons: it improves the chemical-physical properties by favoring the solubilization of mineral elements making them more available for plants; improves the soil structure; hinders the washout carried out by rainwater. Its presence is therefore fundamental for the formation of agricultural land.
The soils that are rich in it are called humiferous soils.

Botanical dictionary from A to Z.

Video: Definition of the word Humus


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