topsoil
Sign in to savethumb|Surface runoff of topsoil from a field in Iowa during a rainstorm
~9 min read
Encyclopedic overview
12 sectionsContents
- Description
- Production
- Classification
- Evaluation
- Carbon to nitrogen ratio
- Commercial application
- Erosion
- Conservation
- See also
- References
- Further reading
- External links
thumb|Surface runoff of topsoil from a field in Iowa during a rainstorm
Topsoil is the upper layer of soil. It has the highest concentration of organic matter and microorganisms and is where most of the Earth's biological soil activity occurs.
Excerpted from Wikipedia’s “topsoil” article, available under the CC BY-SA 4.0 licence.