Assertion: manure | /r/MadeOf | potassium
Facets:
value: with having discovered its benefits
type: OTHER
Source sentences:
text: Manure contains important plant nutrients such as N, phosphorus (P), potassium (K), and other secondary nutrients and trace elements, with farmers all over the world having discovered its benefits and associated it with increased crop production as far back as 5900–2400 years B.C.