Humus

Humus a non living organic matter in soil that is derived from microbial decomposition of plant and animal substances. Humus is dark colords and consists of approzimately 60% carbon, 6% nitrogen and small amounts of sulfur and phosphorus.

Formations of humus Mor Mor is generally found in coniferous forests or mixed-wood forests. it is also associated with acidic conditions. mor comes fromcepomposing organic matter that lies on the surface of the soil. Fungi, earthworms, and small arthropods are some common organisms that decay into mor. Mor usually contains a low mineral content. The biological activity is relatively low.

moder Moder is the transitional form of humus. it lies between mull and moder. this humus is moderately humified and has characteristics of both mor and mull. moder can be found where mor or mull are not gereally favorable.

Mull mull can be found in hardwood forests, deciduous forests, or grasslands in warm, humic climates. unlike mor, the pH in this humus formation is much higher and larger insects are more abundant. mull is subject to rapid decomposition and is well mixed with minerals

Benefits of Humus