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Soil health is a state of a soil meeting its range of ecosystem functions as appropriate to its environment. In more colloquial terms, the health of soil arises from favorable interactions of all soil components that belong together, as in microbiota, plants and animals. It is possible that a soil can be healthy in terms of eco-system functioning but not necessarily serve crop production or human nutrition directly, hence the scientific debate on terms and measurements.
Soil health testing is pursued as an assessment of this status but tends to be confined largely to agronomic objectives, for obvious reasons. Soil health depends on soil biodiversity , and it can be improved via soil management, especially by care to keep protective living covers on the soil and by natural soil amendments. Inorganic fertilizers do not necessarily damage soil health if 1] used at appropriate and not excessive rates and 2] if they bring about a general improvement of overall plant growth which contributes more carbon-containing residues to the soil.