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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]
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 organic matter (SOM) is the organic matter component of soil, consisting of plant and animal detritus at various stages of decomposition, cells and tissues of soil microbes, and substances that soil microbes synthesize.
The rows formed slow surface water run-off during rainstorms to prevent soil erosion and allow the water time to infiltrate into the soil. Soil conservation is the prevention of loss of the topmost layer of the soil from erosion or prevention of reduced fertility caused by over usage, acidification, salinization or other chemical soil ...
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
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The formation of mull humus form results from various factors, including regional climate, parent rock, vegetation, and soil organism. [3] Mull order presents in deciduous forests, and the development is often associated with a mild climate in terms of warm temperature and moderate precipitation, also rich soil parent materials. [4]
The University of Colorado has arranged to obtain a record amount of insurance coverage for Heisman Trophy winner Travis Hunter and quarterback Shedeur Sanders to protect them in case they are ...