Assertion: fertilizer's material | /r/MadeOf | potassium
Facets:
value: especially
type: MANNER
Source sentences:
text: The disadvantages are that only relatively low analyses are possible, especially when the material contains potassium, and the cost per unit of nutrients is generally higher.
text: According to the International Fertilizer Industry Association, any natural or manufactured material that contains at least 5 percent nitrogen, potassium or phosphorus is a fertilizer.