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In classical [1] soil science, humus is the dark organic matter in soil that is formed by the decomposition of plant and animal matter. It is a kind of soil organic matter. It is rich in nutrients and retains moisture in the soil. Humus is the Latin word for "earth" or "ground". [2]
Humus composes the bulk of organic matter in the lower soil profile. [ 3 ] The decline of nutrient ratios is also a function of decomposition of litterfall (i.e. as litterfall decomposes, more nutrients enter the soil below and the litter will have a lower nutrient ratio).
Compost can be added to soil, coir, or peat, as a tilth improver, supplying humus and nutrients. [67] It provides a rich growing medium as absorbent material. This material contains moisture and soluble minerals, which provide support and nutrients.
It is an excellent source of humus, although much of its nitrogen content will have been used up by the composting and growing mushrooms. It remains, however, a good source of general nutrients (1-2% N, 0.2% P, 1.3% K plus a full range of trace elements), as well as a useful soil conditioner. [1]
Mor humus has three distinct layers: A litter (L) layer, atop a fermentation (Fm) layer, followed by a humus (H) layer, before the transition to mineral soil (Ae, Bf). ). Unlike other types of forest floor humus, the litter layer is well-differentiated from the fermentation layer, and the fermentation layer remains distinct from the humus la
To insulate the roots of your plants, add a 2—to 3-inch layer over the soil. Compost. Wood chips are carbon-rich, making them a great material to use in compost. "The ratio of carbon to nitrogen ...
The term comes from humus, which in turn comes from the Latin word humus, meaning "soil, earth". [1] Humic substances represent the major part of organic matter in soil , peat , coal , and sediments , and are important components of dissolved natural organic matter (NOM) in lakes (especially dystrophic lakes ), rivers, and sea water .
Soil has a crucial function in the global carbon cycle, with the global soil carbon pool estimated to be 2,500 gigatons. This is 3.3 times the amount of the atmospheric pool at 750 gigatons and 4.5 times the biotic pool at 560 gigatons.
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