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It is rich in nutrients and retains moisture in the soil. Humus is the Latin word for "earth" or "ground". [2] In agriculture, "humus" sometimes also is used to describe mature or natural compost extracted from a woodland or other spontaneous source for use as a soil conditioner. [3] It is also used to describe a topsoil horizon that contains ...
The Taiwan plum yew is endemic to the island of Taiwan where it grows in humus rich soil or gravel cliffs. They grow as small trees or bushes in the understories of wet subtropical forests or warm-temperate forests. This variety grows in mixed deciduous and evergreen forests and prefers locations with light to full shade.
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 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 .
Dryopteris erythrosora can tolerate a drier soil than many ferns, but is most successful in moist, humus-rich soil, with a pH range of 6.1 to 7.5, with morning or late afternoon sunshine but not during the middle of the day. [6] It is hardy zones 5 to 11. Propagation is by division in spring, separating the small crowns from the larger crowns ...
Rendzina (or rendsina) is a soil type recognized in various soil classification systems, including those of Britain [1] and Germany [2] as well as some obsolete systems. They are humus-rich shallow soils that are usually formed from carbonate- or occasionally sulfate-rich parent material. [2] Rendzina soils are often found in karst and ...
The generic name Paris is derived from the word pars, or equal, which refers to the symmetry of the plant and the multiples of four in which its foliage, flowers, and fruits grow. [3] [4] The specific epithet, polyphylla, means 'with many leaves'. [5] [6] It is also referred to as Ch'i Yeh I Chih Hua in China, meaning "seven-leaves-one-flower". [7]
Humus also absorbs water, and expands and shrinks between dry and wet states to a higher extent than clay, increasing soil porosity. [174] Humus is less stable than the soil's mineral constituents, as it is reduced by microbial decomposition, and over time its concentration diminishes without the addition of new organic matter.