Soils which have humus require regular application of chemical fertilizers to remove nitrogen deficiency
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Soil is a living, breathing, natural entity composed of solids, liquids, and gases. Soil has five major functions:
Provides a habitat for organismsRecycles waste productsFilters waterServes as an engineering materialProvides a medium for plant growth1
Our focus will be on the fifth function. In this role, soil provides structural stability for plants and retains and relinquishes water and the nutrients necessary for plant growth.
An ideal soil for plant growth contains 50% porespace and 50% solids, with the porespace filled with equal parts air and water. This distribution rarely occurs because porespace varies with soil texture and soil management. For example, tilling increases porespace, while poor drainage and compaction reduce it.
Soil solids are a blend of mineral materials and organic matter
Provides a habitat for organismsRecycles waste productsFilters waterServes as an engineering materialProvides a medium for plant growth1
Our focus will be on the fifth function. In this role, soil provides structural stability for plants and retains and relinquishes water and the nutrients necessary for plant growth.
An ideal soil for plant growth contains 50% porespace and 50% solids, with the porespace filled with equal parts air and water. This distribution rarely occurs because porespace varies with soil texture and soil management. For example, tilling increases porespace, while poor drainage and compaction reduce it.
Soil solids are a blend of mineral materials and organic matter
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