Assertion: fertilizer's macronutrient | /r/HasProperty | calcium
Facets:
Source sentences:
text: three secondary macronutrients: calcium (Ca), magnesium (Mg), and sulfur (S);
text: The macronutrients, or those nutrients needed in large quantities, are nitrogen, phosphorus, potassium, calcium, sulfur, and magnesium.
text: In addition to the main nutrients discussed above there are two other macronutrients: calcium (Ca) and magnesium (Mg).