Assertion: card's use | /r/UsedFor | refer to the use of organic matter
Facets:
value: more narrowly
type: MANNER
Source sentences:
text: The use of "organic" popularized by Howard and Rodale refers more narrowly to the use of organic matter derived from plant compost and animal manures to improve the humus content of soils, grounded in the work of early soil scientists who developed what was then called "humus farming.