A fragipan is a diagnostic horizon in USDA soil taxonomy. They are altered subsurface soil layers that restrict water flow and root penetration. Fragipans are similar to a duripan in how they affect land-use limitations. In soil descriptions, they are commonly denoted by a Bx or Btx symbol. ==Characteristics== The Required Characteristics of a fra...
Found on
http://en.wikipedia.org/wiki/Fragipan
A dense layer of soil, containing silt and sand but no organic matter and little clay, whose extreme hardness and impermeability are due primarily to compaction. compare caliche , claypan, hardpan.
Found on
https://www.encyclo.co.uk/local/22327
No exact match found.
