A nutrient required by plants in relatively large quantities. The primary macronutrients are nitrogen (N), phosphorus (P), and potassium (K). Secondary macronutrients include calcium (Ca), magnesium (Mg), and sulphur (S). See also Micronutrient.
A nutrient required by plants in relatively large quantities. The primary macronutrients are nitrogen (N), phosphorus (P), and potassium (K). Secondary macronutrients include calcium (Ca), magnesium (Mg), and sulphur (S). See also Micronutrient.