A soil that contains a high percentage (greater than 20 or 30 percent) of organic matter in the upper layers (where living roots are primarily found).
Soil with a high organic content, such as plant or animal material. Peat is an organic soil.
A soil is classified as an organic soil when it is: (1) saturated for prolonged periods (unless artificially drained) and has more than 30 percent organic matter if the mineral fraction is more than 50 percent clay, or more than 20 percent organic matter if the mineral fraction has no clay; or (2) never saturated with water for more than a few days and having more than 34 percent organic matter.
A soil that is made up of mostly organic, natural material. Usually refers to peat.
Any soil or soil horizon containing at least 30 percent organic matter; examples are peat and muck.
A soil made up of mainly organic matter. Peat is an organic soil.
Spongy soils, usually made from vegetative matter, and are not suitable for construction use.
a soil that contains a high percentage (greater than 20 or 30%) of organic matter throughout the upper part of the soil profile.
A soil that contains a high percentage(more than 15 to 20 percent) of organic matterthroughout the soil column.
soil containing a high proportion (greater than 20 or 30 percent) of organic matter. Return to
For the purposes of FIA, an organic soil is defined as any soil in which the organic horizon is greater than 8 inches (20 cm) in thickness. These soils are prevalent in wetland areas such as bogs and marshes and may be frequently encountered in certain regions of the country (e.g., Maine, northern Minnesota, coastal regions)
A soil in which the percentage of organic matter is greater than 25%.
Soil derived from once living organisms, such as peat or muck.
Spongy, compressible soils usually consisting of peat humus or vegetative matter that have undesirable construction characteristics.
A general term used in reference to any soil that is at least 20 percent organic matter.
Soil at least partly derived from living matter, such as decayed plant material. ( FS People's Glossary of Eco Mgmt Terms)
Soil that has developed from large amounts of decayed vegetative matter. Usually wet but when dry, will burn underground. It spreads very slowly but is most difficult to suppress.
A soil that contains at least 17 % organic carbon (30% organic matter) by weight. Commonly saturated with water and consist mainly of mosses, sedges and othe hydrophytic vegetation.