Macro, meso, and micro: basic elements for plant nutrition
Soil nutrients come in three basic categories: macro, meso, and micro elements.
- Macro elements are nitrogen (N), phosphorus (P), and potassium (K).
- Meso elements are magnesium (Mg), calcium (Ca), and sulfur (S).
- Micro elements or trace elements are iron (Fe), manganese (Mn), zinc (Zn), boron (B), copper (Cu), molybdenum (Mo), and silicon (Si).
For growth to occur there must be a proper balance between these categories. The table gives you an idea of the optimum nutrient element ratios in plant tissue.
|Element||Ratio in plant tissue|