solum
/ˈsoʊləm/
noun
- The upper layer of soil in which plants grow, especially the part that is disturbed by plowing or cultivation.
- Earthworms help aerate the solum, making it healthier for plant roots.
- The farmer tested the solum to see if it had enough nutrients for the new crop.
- After the landslide, the solum was stripped away, leaving only bare rock.
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