Assertion: manure | /r/CapableOf | improve drainage
Facets:
value: in heavy soils
type: LOCATION
value: in moisture retention
type: OTHER
Source sentences:
text: They may add carbon, or other nutrients to the soil, and improve structure and drainage.
text: They help build the organic matter content, add nutrients, increase microbial activity, and improve drainage in heavy soils and moisture retention in sandy soils.