Assertion: fertilizer's chemical | /r/HasProperty | added
Facets:
Source sentences:
text: Inventory should be actively maintained as chemicals are added or removed from storage; containers should be dated when purchased; outdated materials should be removed on a regular basis; inventory should be controlled to prevent the accumulation of excess material that may become difficult to use
text: If only chemicals are added the soil gradually loses its organic matter and microbiotic activity.