That portion of the soil formed by the decomposition of animal or vegetable matter. It is a valuable constituent of soils.
decomposed and partly decomposed organic matter in the soil
The dark portion of a soil that consists of organic material that is well enough decayed that the original source material can not be identified.
Not a Middle-Eastern dish, but the organic component of soil formed by the decomposition of animal or vegetable matter.
Decomposing organic matter on or in the soil.
Decomposed organic matter. Healthy soil will consist of about 3.5 to 5% of this organic matter. Humus is soft, sweet-smelling, shapeless dark and crumbly and smells like the forest floor (more correctly, the forest floor smells like humus because that is what is naturally there). It is this stage of the decomposition process which provides nutrients for plant life. It contains about 30% each of lignin, protein, and complex sufars. It contains 3 - 5% nitrogen and 55 - 60% carbon. Humus is the slow-release food source for microorganism development. It is constantly being transformed into acids, enzymes and minerals and, therefore, must be constantly replenished for proper vegetative nutrition.
The part of the soil profile that is composed of decomposed organic matter from dead and decaying plants and animals.
Partly or wholly decomposed vegetable matter; an important constituent of garden soil.
A brown or black organic substance made of decayed vegetable matter that provides nutrients for plants and increases the water holding ability of soil.
Dark partly soluble organic substance formed by the decomposition of organic soil matter.
is the product of the decay of organic matter. It contains both humic and non-humic material.
Dark brown or black partially decomposed organic matter.
Decayed organic matter, compost
Slightly soluble residue of undigested or partially decomposed organic material in topsoil. This material helps retain water and water-soluble nutrients, which can be taken up by plant roots.
A dark colored, stable form of organic matter that remains after most of plant or animal residues have decomposed.
soil or organic matter that is broken down, smells like the forest floor. 3-5% of this organic matter should be found in healthy soil. Is a slow release form of food for microorganisms. ..more info...
The dark-colored carboniferous residue in the soil resulting from the decomposition of vegetable tissues of plants. Residues similar in appearance and behavior are found in well-digested sludges and in activated sludge.
A substance that results from the decay of organic matter by living organisms.
among the richest and darkest of soils and develops from decaying plant and animal life
A rich, natural, soil-like fertilizer that is the result of composting.
The generally dark layer of soil which contains mainly decomposed organic matter.
The decayed part of the organic matter in a soil.
Organic matter in soil derived from the partial decomposition of plant and animal remains. Generally, the decomposition has proceeded sufficiently to make it impossible to recognize the original material.
decomposed material in the soil that is a highly complex mixture of organic and inorganic substances.
decomposing animal or vegetable matter in its last stages, when brownish black. Humus consists of a water insoluble part (humin), the fibrous part, and a water soluble part which are split into two fractions by definition, a heavy fraction, water soluble only at alkaline pH above 8, called humic acid (the black tarry substance in the compost heap for the layman) and a light fraction, water soluble at any pH, called fulvic acid (the honey coloured streak you get when you run water through the compost heap - people have started to call it compost tea).
A product of microbial decomposition of plant and animal residues that resists further decomposition and accumulates in the soil as organic matter. Humus has a dark color and darkens the A horizon in soils layers.
All of the organic compounds in soil exclusive of undecayed plant and animal tissues, their partial decomposition products and the soil biomass. It is highly stable and resistant to further alteration.
A dark-colored organic material that is the product of organic matter breakdown by both microorganisms and chemical reactions.
Layer of decomposed organic matter on the forest floor beneath the fermentation layer and directly above the soil. It is that part of the duff in which decomposition has rendered vegetation unrecognizable and mixing of soil and organic matter is underway. see also: Duff; Litter
The beneficial decayed vegetable matter that helps to form soil.
Organic matter derived from partially decompo ...
Humus is organic matter partly or wholly decomposed. When the decomposition of humus is hastened by human intervention so as to use it as a soil amendment, it is virtually synonymous with compost. A generous admixture of humus to soil can help make it friable.
The plant and animal residues of the soil (litter excluded) that have decomposed to the point where their origin is no longer recognizable.
The fraction of organic matter in the soil resulting from decomposition and mineralization of organic material.
Sticky, brown, insoluble residue from the bodies of dead plants and animals; gives soil its structure, coating mineral particles and holding them together; serves as a major source of plant nutrients.
That more or less stable organic remnant of soil matter remaining after the major portion of plant and animal residues have decomposed. Usually it is dark in color.
Dark colored soil organic matter.
organic material consisting of decayed vegetable matter. It provides nutrients for plants and allows soil to better hold water.
Partially decomposed organic soil material.
decaying organic matter, usually dark in color and rich with nitrogen.
the chemically complex organic matter in soil made up of decaying plant material; it is usually black or dark brown in color.
a black or dark brown material forming the organic portion of the soil, usually a mixture based on partial decomposition of animal and plant matter.
partially decomposed organic matter; the organic component of soil
Material suitable for soil conditioning that is derived primarily from the decomposition of animal or vegetable matter.
Dark brown, decomposed, colloidal organic matter found in soils. Humus usually has a beneficial effect on aeration and soil structure due to its ability to flocculate, or aggregate, multivalent cations.
Complex mixture of decaying organic matter and inorganic compounds in the soil that serves as a major source of plant nutrients and increases the water absorption capacity of soils.
The soft, moist, amorphous black or dark brown organic matter in soil derived from decaying plant and animal remains. It provides nutrients for plants and can increase the soil's ability to hold water.
Dark, rich, organic soil matter made from decaying plant or animal material.
The late stage of rotting organic material.
Soil organic residue which has been decomposed so much that it no longer has any of its original structure. It is basically the stable part of the organic matter.
dark, fertile, partially decomposed plant or animal matter: Humus forms the organic portion of the soil.
The organic substance that results from decay of plant or animal matter. Humus results from the degradation of lignin, carbohydrate, and proteins. Biodegradable plastics can form humus as they decompose. The addition of humus to soil is beneficial.
the organic portion of soil; a substance resulting from the decay of plant and/or animal matter by microorganisms.
complex material resulting from partial decomposition of plant or animal matter and forming the organic portion of soil
Organic matter. The 'magic ingredient' which, when present in the soil, makes it more workable, adds to the moisture retention of lighter soils and assists plants to absorb nutrients. Average humus content ranges from 1 to 6 percent. Organically managed soil will always have higher levels of humus than those dealt with mainly by the use of chemicals.
the end product of composting, also called compost.
Derived from the decomposition of organic matter
Decayed or partially decayed organic matter derived from plants.
organic soil formed from decaying organic materials and mineral particles; most humus is black or dark brown, and holds large amounts of water.
The rich soil resulting from composting.
black or brown layer of composted organic matter
Dark, fine textured material that results from organic material, reaching an advanced stage of decay.
the decomposed residue of plant and animal tissues.
Dead organic material derived from decomposition of plant and microbial wastes
Fraction of soil organic matter which remains after plant and animal residues have decomposed.
The organic portion of soil, formed by partially decomposed animal and vegetable matter.
Highly decomposed plant and animal residue that is a part of soil.
Organic material formed by the decomposition of vegetation.
a brown or black organic substance consisting of partially or wholly decayed vegetable or animal matter that provides nutrients for plants and increases the ability of soil to retain water
The end result of successful composting is humus. It is the rich, dark, and fine mixture of decomposed organic materials. Humus contains the microorganisms necessary for healthy soil, as well as a ready supply of the macro- and micro-nutrients necessary for healthy plants. Use humus in the garden to condition and amend soil. Mix it with the soil for general improvement or use it to side-dress hungry plants.
a general term for the more or less decomposed plant and animal residues in the lower organic soil layer.
decomposed bits of plant and animal matter in the soil
(hew´ muss) • The partly decomposed remains of plants and animals on the surface of a soil. Its characteristics depend primarily upon climate and the species of plants growing on the site.
Thoroughly decayed organic matter. Added to lawns, it will increase a soil's water-holding capacity, improve aeration, and support beneficial microbial life in the soil.
The end product of composting. Organic material which is completely decomposed.
Brown or black substance matter from partial decay of plant or animal matter.
a complex aggregate made during the decomposition of plant and animal residues; mainly derivatives of lignin, proteins, and cellulose combined with inorganic soil parts.
A dark, loamy, organic material resulting from the decay of plant and animal refuse.
decomposed plant and animal material that is part of the soil. Humus is a product of composting.
The organic material of soil. It is formed from decomposing plants and animals. Back to top of the page
A dark coloured fraction of soil organic matter formed during the decomposition of organic residues.
Decomposed organic matter. When added to any soil, humus increases the soil water-and nutrient-holding capacity, porosity, and tilth (particle structure).
Organic portion of the soil remaining after prolonged microbial decomposition.
the material in soil formed by the breakdown of plant and animal remains
decayed remains of organisms. The addition of humus to soil enriches it with organic material and increases the capacity of the soil to hold air and water.
The final stage in the decomposition of soil organic matter. It is essential in maintaining soil structure.
A nutrient-rich soil-like material which is the end product of the composting process.
finished compost, formed through the break down of plants and animal matter. Humus retains and slowly releases nutrients to plants.
The more or less stable fraction of the soil organic matter remaining after the major portion of the plant and animal residues have decomposed.
Humus is a complex substance resulting from the breakdown of plant material in a process called humification. This process can occur naturally in soil, or in the production of compost. Humus is extremely important to the fertility of soils in both a physical and chemical sense. Physically it helps the soil retain moisture and encourages the formation of good soil structure. Chemically, it has many active sites which bind to ions of plant nutrients, making them more available. Humus is often described as the 'life-force' of the soil. Yet it is difficult to define humus in precise terms; it is a highly complex substance, the full nature of which is still not fully understood. Physically humus can be differentiated from oplant matter in that the latter is rough looking material, with coarse plant remains still visible, whilst once fully humified it become more uniform in appearance (a dark, spongy, jelly-like substance) and amorphous in structure. That is, it has no determinate shape, structure or character.
The stable, high molecular weight and colloidal fraction of soil organic matter derived from decomposed plant and animal matter in the soil.
The brown or black organic part of the soil resulting from the partial decay of leaves and other matter.
The substance which results from decay of plant or animal matter. Biodegradable matters form humus as they decompose.
sticky, brown part of the soil that comes from dead plants and animals and contains many nutrients
the fraction of the soil organic matter remaining, usually amorphous and dark colored, after the major portion of added residues have decomposed.
is a soil material which is produced from decaying organic material
The dark, rich, organic constituent in soil produced by decomposition of plant and animal matter.
A dark, well-decomposed material formed from decayed vegetable or animal matter in the soil.
The solid organic substance that results from decay of plant or animal matter. Biodegradable plastics can form humus as they decompose. Humus in soil provides a healthy structure within which air, water and organisms can combine.
Well-decomposed organic compounds in soil that are very resistant to further degradation. Humus has high water-holding and cation-exchange capacity, binds soil particles, and improves soil structure.
An amorphous organic substance nearly completely decomposed.
The well decomposed,more or less stable part of the organic matter in mineral soils.
A stable form of organic matter that remains when most of the animal and plant residuals have been decomposed by micro-organisms.
Humus is the rich, organic portion of the soil. It is composed of decayed plant and animal materials.
Nutrient-rich earth formed when plant material decays.
A brown or black substance resulting from the partial decay of plant and animal matter; organic part of the soil.
the dark rich part of the earth formed by the decay of roots, stems, and leaves of plants as well as the decay of animal matter.
a dark-brown or black part of soil formed from decayed leaves and other vegetable matter, containing valuable plant foods. [AHDOS
The layer of decomposed organic matter on the forest floor beneath the partially decomposed litter layer (F layer) and directly above the soil.
The nutrient-rich end product of the decomposition of Soil Organic.
That part of the organic materials accumulated in the soil, generally dark in color and relatively stable, which has decomposed to a point where the original sources can no longer be identified.