Humus

Definition (http://en.wikipedia.org/wiki/Humus)

In soil science, humus refers to any organic matter that has reached a point of stability, where it will break down no further and might, if conditions do not change, remain as it is for centuries, if not millennia. Humus significantly improves the structure of soil and contributes to moisture and nutrient retention. (Wikipedia)

Preferred Units: N/A

Scope Note:
N/A

This term is used for the following terms: 
Humic substances
Mull

Approved Date
24-Oct-2012

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