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Humus is different from decomposing soil organic matter. The latter looks rough and has visible remains of the original plant or animal matter. Fully humified humus, on the contrary, has a uniformly dark, spongy, and jelly-like appearance, and is amorphous; it may gradually decay over several years or persist for millennia. [14]
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 .
Vermicompost (also called worm castings, worm humus, worm manure, or worm faeces) is the end product of the breakdown of organic matter by earthworms. [63] These castings have been shown to contain reduced levels of contaminants and a higher saturation of nutrients than the organic materials before vermicomposting.
More plants cohabit in mull humus, and the plant biodiversity is highly related to nutrient availability and the impacts of the soil acidity. Too much nutrient availability may negatively impact plant growth, but the high competition between soil organisms can deal with the concern. [11] The effects of mull humus on the vegetation growth are ...
For instance, sheep manure is high in nitrogen and potash, while pig manure is relatively low in both. Horses mainly eat grass and a few weeds, so horse manure can contain grass and weed seeds, because horses do not digest seeds as cattle do. Cattle manure is a good source of nitrogen as well as organic carbon. [3]
Starting with a dreamy conjunction between Venus and Neptune in Pisces on Feb. 1, don’t be surprised if your love life feels extra enchanting — indulge in your daydreams and let your ...
Soil colors influenced by mineralogy. Soil color is often the most visually apparent property of soil. While color itself does not influence the behavior or practical use of soils, [1] it does indicate important information about the soil organic matter content, mineralogy, moisture, and drainage.
Marcus Rutledge vanished from Nashville, Tennessee in June 1998. Remains found off Pecan Valley Rd in 2010 have just been identified as belonging to him. The Metro Nashville Police Department has ...