Macronutrient

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One or all of the primary nutrients N-P-K (Nitrogen, Phosphorus, or Potassium) or the greencultured.co/glossary/secondary-nutrients/" target="_blank" data-mobile-support="0" data-gt-translate-attributes='[{"attribute":"data-cmtooltip", "format":"html"}]'>secondary nutrients magnesium (Mg) and calcium (Ca).