| skos:altLabel | - productivity
- soil
- rich
- rich soil
- productive
- fertile land
- fertile
- fertility
- infertile
- soils
- depletion of soils
- soil quality
- soil fertility
- fertile soil
- fertile soils
- Soil fertility#Global distribution
- Soil fertility#Soil depletion
- agricultural fertility
- fertilise it
- fertility of soil
- fertility of the soil
- infertile ground
- infertile soil
- infertile soils
- nutrient-poor soils
- poor soils
- soil fertile
- soil infertility
- soil is very fertile
- soil more fertile
- soil productivity
- soils infertile
- unfertile soil
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