soil composition
Ground's material mixture
Soil composition refers to the proportions of different materials that make up soil—typically mineral particles (sand, silt, clay), organic matter, water, and air.
The ratio of these components determines soil type and affects drainage, fertility, and suitability for agriculture or construction: The soil composition here is too sandy for growing vegetables.
Geologists and farmers test soil composition to understand what the ground can support.
- earthwormsSoil-dwelling segmented invertebrates
- worm castingsEarthworm digestive output
- humusDecayed organic soil matter
- biodiversityRange of life forms
- peatWaterlogged decomposed vegetation
quartz · feldspar · fungi · aeration · bacteria · carbon sink · calcite · terroir · dirt under nails · ground up · compost · biochar · iron oxides · sand · nematodes · root zone · mycorrhizae · mica
soil compositionbedrock
Solid stone underground
solid rock · bare rock · rocky outcrop · rock strata · geological formation