Classification | Source | Nutrient |
Macronutrients | Air (carbon dioxide) | Carbon, hydrogen and oxygen |
Water | Hydrogen and oxygen | |
Soil | Nitrogen, Phosphorous, Potassium, Calcium, Magnesium, Sulphur | |
Micronutrients | Soil | Iron, Copper, Zinc, Manganese, Boron, Molybdenum, Chlorine, Sodium |