Assertion: potassium nitrate's use | /r/HasProperty | as fertiliser
Facets:
Source sentences:
text: The role of potassium nitrate in gunpowder is that of an oxidant, a compound that reacts readily, and often violently, with combustible materials like cotton, coal or sulphur, but its major use today is as a fertiliser, as plants have great need for both nitrogen and potassium.