Assertion: peat's material | /r/HasProperty | added
Facets:
value: usually
type: DEGREE
value: to potting mixes
type: TRANSITIVE-OBJECT
Source sentences:
text: There are lots of other organic and inorganic materials that can be added to potting mixes to improve drainage or improve the consistency of the end result.
text: To destroy pathogens, thermophilic composting must heat the compost pile sufficiently, or enough time (1–2 years) must elapse since fresh material was added that biological activity has had the same pathogen removal effect.
text: Sawdust and straw or other carbon rich materials are usually added as well.