URI: https://soilwise-he.github.io/soil-health#AgriculturalSoils
https://soilwise-he.github.io/soil-health#AgriculturalSoils
http://aims.fao.org/aos/agrovoc/c_33934
soil acidification
soil C/N ratios
N critical levels
precipitation
N weathering
N-containing minerals
N target levels
N dissolution
Ungaro2022