Subsoil
Get Subsoil essential facts below. View Videos or join the Subsoil discussion. Add Subsoil to your PopFlock.com topic list for future reference or share this resource on social media.
Subsoil
Subsoil layer

Subsoil is the layer of soil under the topsoil on the surface of the ground. Like topsoil, it is composed of a variable mixture of small particles such as sand, silt and clay, but with a much lower percentage of organic matter and humus. Below the subsoil is the substratum, which can be residual bedrock, sediments, or aeolian deposits. As it is lacking in dark humus, subsoil is usually paler in color than the overlying topsoil. It may contain the deeper roots of some plants, such as trees, but a majority of plant roots lie within the topsoil.

Clay-based subsoil has been the primary source of material for adobe, cob, rammed earth, wattle and daub, and other earthen construction methods for millennia. Coarse sand, the other ingredient in most of these materials, is also found in subsoil.

Although by no means sterile, subsoil is relatively barren in terms of soil organisms compared to humus-rich topsoil.

See also

Sources

  • Håkansson, Inge; Reeder, Randall C. (March 1994). "Subsoil compaction by vehicles with high axle load--extent, persistence and crop response". Soil and Tillage Research. 29 (2-3): 277-304. doi:10.1016/0167-1987(94)90065-5.(subscription required)
  • Adams, Fred; . Moore, B. L (January 1983). "Chemical Factors Affecting Root Growth in Subsoil Horizons of Coastal Plain Soils". Vol. 47 No. 1. Soil Science Society of America Journal. pp. 99-102. Retrieved 2012.(subscription required)



  This article uses material from the Wikipedia page available here. It is released under the Creative Commons Attribution-Share-Alike License 3.0.

Subsoil
 



 



 
Music Scenes