Assertion: fertilizer's micronutrient | /r/HasProperty | required
Facets:
value: less often than the macronutrients
type: OTHER
value: in very minute quantities
type: OTHER
Source sentences:
text: If micronutrients are required, they can usually be applied in the starter fertilizer.
text: The micronutrients iron, manganese, zinc, boron, copper, chlorine, molybdenum, and nickel are required in very minute quantities and less often than the macronutrients.