Assertion: seaweed | /r/MadeOf | 0.2 to 1.3 percent phosphorus
Facets:
value: on a dry-weight basis
type: OTHER
Source sentences:
text: On a dry-weight basis, seaweeds contain up to 1.2 percent nitrogen, 0.2 to 1.3 percent phosphorus, and 2.8 to 10 percent potassium.