Humus definition

Humus means a complex amorphous aggregate, formed during the microbial decomposition or alteration of plant and animal residues and products synthesized by soil organisms; principal constituents are derivatives of lignins, proteins, and cellulose combined with inorganic soil constituents and for water absorption.
Humus means stable, degraded organic matter.
Humus means a dark or black carbon-rich relatively stable residue resulting from the decomposition of organic matter that retains nutrients and slowly releases nutrients to plants and increases the ability of the soil to retain water.

Examples of Humus in a sentence

  • Humus shall be free of sticks, stones, weeds, roots, mineral or other foreign matter and/or toxic substances harmful to plant growth and viability.

  • Soil organic matter, Composition, Decomposability, Humus, Fractionation of organic matter, Carbon cycle, C: N ratio.

  • Peat Humus: Finely divided or granular texture, with a pH range of 6 to 7.5, composed of partially decomposed moss peat (other than sphagnum), peat humus, or reed-sedge peat.

  • A certificate of analysis of soil samples shall be provided to the Engineer and approved prior to delivery of topsoil to the Project site.b. Peat Moss and Peat Humus.

  • Sawdust or Ground-Bark Humus: Decomposed, nitrogen-treated, of uniform texture, free of chips, stones, sticks, soil, or toxic materials.

  • Berg B, McClaugherty C (2014) Plant Litter: Decomposition, Humus Formation, Carbon Sequestration (Springer, Heidelberg), p 317.

  • Peat Humus: Is decomposed peat with no identifiable fibers and with a PH range suitable for intended use.

  • Planting soil mix for shrub beds shall consist of one-third topsoil, one-third Michigan Peat Humus and one-third sand.

  • Peat Humus: FS Q-P-166, of the following types and characteristics: For tree and shrub-planting soil mixture, provide moss peat composed of Type II mosses (other than sphagnum) or reed-sedge peat (Type IV) of a coarse fibrous texture and with a pH of 6.0 to 7.5, unless otherwise specified.

  • Necessity for the maintenance of humus content of forest soil; influence of humus on the physical, chemical and biological composition of soil, Humus and soil fertility; effect of fires on humus and forest soil.

Related to Humus

  • Embalmer means any person engaged in the practice of embalming.

  • Holocene means the most recent epoch of the Quaternary period, extending from the end of the Pleistocene Epoch to the present.

  • We/Us/Our means TATA AIG General Insurance Company Limited.

  • Graywater means untreated wastewater that has not been contaminated by any toilet discharge, has not been affected by infectious, contaminated, or unhealthy bodily wastes, and does not present a threat from contamination by unhealthful processing, manufacturing, or operating wastes. "Graywater" includes, but is not limited to, wastewater from bathtubs, showers, bathroom washbasins, clothes washing machines, and laundry tubs, but does not include wastewater from kitchen sinks or dishwashers. Health and Safety Code Section 17922.12.

  • Spring means a source of water where an aquifer comes in contact with the ground surface.

  • Cropland means land used for the production of adapted crops for harvest, alone or in a rotation with grasses and legumes, and includes row crops, small grain crops, hay crops, nursery crops, orchard crops, and other similar specialty crops.

  • Forest means an area of land defined by the minimum values for area size, tree crown cover or an equivalent stocking level, and potential tree height at maturity at the place of growth of the trees as specified for each Member State in Annex II. It includes areas with trees, including groups of growing, young, natural trees, or plantations that have yet to reach the minimum values for tree crown cover or an equivalent stocking level or minimum tree height as specified in Annex II, including any area that normally forms part of the forest area but on which there are temporarily no trees as a result of human intervention, such as harvesting, or as a result of natural causes, but which area can be expected to revert to forest;

  • CORA means the Colorado Open Records Act, §§24-72-200.1 et. seq., C.R.S.

  • Greywater means all liquid wastes from showers, baths, sinks, kitchens and domestic washing facilities, but does not include toilet wastes;

  • Stopover means a scheduled stop on your journey, at a point between the place of departure and the place of destination.

  • Green means products, materials, methods and processes certified by a “Green Authority” that conserve natural resources, reduce energy or water consumption, avoid toxic or other polluting emissions or otherwise minimize environmental impact.

  • Colony means a hive and its equipment and appurtenances, including bees, comb, honey, pollen, and brood.

  • Shorelands or "shoreland areas" means those lands extending landward for two hundred feet in all directions as measured on a horizontal plane from the ordinary high water mark; floodways and contiguous floodplain areas landward two hundred feet from such floodways; and all wetlands and river deltas associated with the streams, lakes, and tidal waters which are subject to the provisions of this chapter; the same to be designated as to location by the department of ecology.

  • Soda fountain means a place especially equipped

  • Tree means any object of natural growth.

  • B-BBEE means broad-based black economic empowerment as defined in section 1 of the Broad-Based Black Economic Empowerment Act;

  • Shoreline means the upper reaches of the wash of the waves, other than storm and seismic waves, at high tide during the season of the year in which the highest wash of the waves occurs, usually evidenced by the edge of vegetation growth, or the upper limit of debris left by the wash of the waves.

  • PECR means the Privacy and Electronic Communications (EC Directive) Regulations 2003 (SI 2426/2003).

  • Edge of any water means the outer edge of the water's bankfull width or, where applicable, the outer edge of the associated channel migration zone.

  • Shoreland means land, as defined in Minn. Stat. § 103F.205, subd. 4, located within 1,000 feet from the normal high water mark of a lake, pond, or flowage and 300 feet of a river or stream or the landward side of floodplain delineated by ordinance on such a river or stream, whichever is greater.

  • seaman ’ means an individual (except scientific personnel, a sailing school instruc- tor, or a sailing school student) engaged or employed in any capacity on board a vessel.

  • Façade means the principal front or fronts of a building.

  • PETE means polyethylene terephthalate, labeled by the SPI code #1.

  • Parkland means any publicly owned land which is designated or used as a public park, recreation area, wildlife or waterfowl refuge or historic site.

  • Radiologic technologist, limited means an individual, other than a licensed radiologic technologist,

  • Pioneer or the "Company" means Pioneer Natural Resources Company and its subsidiaries.