URI: https://soilwise-he.github.io/soil-health#Subsoil
https://soilwise-he.github.io/soil-health#Subsoil
The subsoil in agriculture is defined as soil below the tillage depth (usually around 20-35cm).
http://opendata.inrae.fr/thesaurusINRAE/c_11573
https://data.geoscience.earth/ncl/ISO11074v2025/3.507
http://aims.fao.org/aos/agrovoc/c_7486
http://www.eionet.europa.eu/gemet/concept/8167
soil deformation
current harmful practices
HartgeHorn2016
tillage depth
freeze-thaw cycles