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- The B horizon is a mineral horizon below an A, E, or O horizon in which all or much of the original parent material structures or bedding features have been obliterated. The B horizon can have a range of pedogenic features resulting from translocation of soil materials, in situ processes, or both.
www.sciencedirect.com/topics/agricultural-and-biological-sciences/b-horizons
Feb 17, 2023 · 4) B Horizon – (Subsoil) Mostly found below the topsoil is another layer called the subsoil or horizon B. It is lighter in color than the topsoil due to lower humus content. However, it is comparatively more rigid and compact than the topsoil.
B: A B horizon is a mineral horizon meaning it contains ≤ 17% organic C (about 30% organic matter) by weight. It is characterized by enrichment in organic matter, sesquioxides, or clay; or by the development of soil structure; or by a change of color denoting hydrolysis, reduction, or oxidation.
Jun 7, 2020 · Q: What soil horizon is subsoil? A: Horizon B is the subsoil. It is rich in minerals due to contents that have moved further down into the soil from the upper layers. Horizon B can contain high levels of iron, aluminum, gypsum, and silica clay. Q: Why do soil horizons form? A: Soil horizons form because of the effects of nature.
The horizon description system begins by splitting soil horizons into two distinct groups: organic and mineral horizons. Organic horizons are those that contain 17% or more organic carbon; mineral horizons have less than 17% organic carbon.
B - This mineral horizon is characterized by enrichment in organic matter, sesquioxides, or clay; or by the development of soil structure; or by a change of color denoting hydrolysis, reduction, or oxidation. In B horizons, accumulated organic matter (Bh) is evidenced usually by dark colors relative to the C horizon.
The B horizon is a mineral horizon below an A, E, or O horizon in which all or much of the original parent material structures or bedding features have been obliterated. The B horizon can have a range of pedogenic features resulting from translocation of soil materials, in situ processes, or both.
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Soil horizon labels start with an upper case letter, including O, A, E, B, C, or R. Lower case letters are then added to characterize the horizon in more detail. For example, a Bk horizon is a subsoil horizon (B) in which calcite has formed (k).
