Mass of matter that contains living organisms or non-living material derived from organisms. Sometime refers to the organic constituents of soil. Also see soil organic matter.

That fraction of the soil that includes plant and animal residues at various stages of decomposition, cells and tissues of soil organisms, and substances synthesized by the soil population. 

composts or similar materials derived from plant material

Part of the soil that consists of decayed or decaying plant and animal matter (humus).

A household mix of food, dead leaves and decomposed plants and trees which are used to offer soil and plants nutrients and to encourage growth naturally.

Substance of animal or plant origin – such as compost, leaf mould or manure. Useful for improving soil structure and supplying nutrients to plants.

Also, humus. Carbon-rich soil component that helps open up heavy clay soils, increasing air and water movement. Also helps hold sandy soils together – gives them structure and more stability.

Organic materials are those originating from a living organism. Organic has also become the common term to refer to a method of gardening in which no chemical fertilizers or pesticides are used.

Decaying plant, microbe and animal remains.

Matter from a once-living organism; capable of decay, or the product of decay; or is composed of organic compounds.

Material that originates from living organisms such as peat moss, plant residue, compost, ground bark and animal manures.

Decaying plant, microbe and animal remains.

Material that originated from living matter.

Any material originating from a living organism (peat moss, plant residue, compost, ground bark, manure, etc.).

Matter of plant or animal origin.

Any material that originates from living organisms, including all animal and plant life whether still living or in any stage of decomposition.

biogenic material resulting from biological processes and containing one or more carbon atoms. Kerogen, bitumen, petroleum and gas are organic materials preserved in rocks.

the dead plants, animals and manure converted by earthworms and bacteria into humus Pastures:

plant and animal residues, or substances made by living organisms. All are based upon carbon compounds.

any molecules containing carbon produced by plants, animals and humans

Any material that is part of or originated from living organisms. Includes soil organic matter, plant residue, mulch, compost, and other materials.

The highly dynamic or labile portion of soil organic matter that is readily available to soil organisms. May also include the living biomass. Particulate organic matter (POM) and light fraction (LF) are measurable indicators of the active fraction. POM particles are larger than other SOM and can be separated from soil by sieving. LF particles are l [..]

The pool of soil organic matter that is resistant to biological degradation because it is either physically or chemically inaccessible to microbial activity. These compounds are created through a combination of biological activity and chemical reactions in the soil. Humus is usually a synonym for stabilized organic matter, but is sometimes used to [..]

Substances of (dead) plant or animal matter, with a carbon

Compounds that contain carbon and hydrogen covalently bonded together in molecules; molecules from living matter. Organic wastes in sewage and runoff from lawns and farms in fresh waters can cause oxygen-depletion and degradation of water quality. Energy Energy: The ability to do work.

Material derived from plant or animal source. Often added to topdressing soil mixtures to give added water and nutrient holding capacity to the soil.

compounds containing carbon often derived from living organisms.

chemical compounds based on carbon chains or rings, and also containing hydrogen with or without oxygen, nitrogen, or other compounds.

Carbonaceous waste contained in plant or animal matter and originating from domestic or industrial sources. (EPA Glossary)

Carbonaceous waste contained in plant or animal matter and originating from domestic or industrial sources.

Carbonaceous waste contained in plant or animal matter and originating from domestic or industrial sources.

Carbonaceous waste contained in plant or animal matter and originating from domestic or industrial sources.

Compounds manufactured by plants and animals that contain principally carbon. 

Any material that was recently living or produced by a living organism and is capable of being decomposed.

The waste from homes or industry of plant or animal origin. Volatile fraction of solids.

Material that comes from organisms that were once alive, or derived from or produced through the biological activity of a living thing.

Materials which come from animal or vegetable sources. Organic matter generally can be degraded by microorganisms.

The waste from homes or industry of plant or animal origin. Volatile fraction of solids.

Material that contains or is derived from living organisms.

Generally refers to the dead or decaying residues of animals and plants in the soil.

Plant and animal residues, or substances made by living organisms. All are based upon carbon compounds.

Derived from or produced through the biological activity of a living thing.

Compounds that contain carbon and hydrogen covalently bonded together in molecules; molecules from living matter. Organic wastes in sewage and runoff from lawns and farms in fresh waters can cause oxygen-depletion and degradation of water quality.

Any material originating from a living organism (peat moss, plant residue, compost, ground bark, manure, etc.).

Carbonaceous waste contained in plant or animal matter and originating from domestic or industrial sources.

The waste from homes or industry of plant or animal origin. Volatile fraction of solids.

Matter derived from living organisms. Organic materials such as leaves, peat, grass clippings, and compost are often added to your soil to improve its fertility and structure.

The organic fraction of the soil; includes plant and animal residues at various stages of decomposition, cells and tissues of soil organisms, and substances synthesized by the soil population. See als [..]

Amount of remainder after drying and incinerating of a sample into an oven at 625° C for 3 hours, which is taken from solid wastes or composts.