Review Article
Growing Use and Impacts of Chemical Fertilizers and Assessing Alternative Organic Fertilizer Sources in Ethiopia
Table 1
Essential plant nutrient classification.
| Nutrients supplied by water and air | Nutrients supplied by the soil | Nonmineral | Primary macronutrient | Secondary macronutrient | Micronutrients |
| Carbon (C) | Nitrogen (N) | Calcium (Ca) | Zink (Zn) | Iron (Fe) | Hydrogen (H) | Phosphorus (P) | Magnesium (Mg) | Chlorine (Cl) | Manganese (Mg) | Oxygen (O) | Potassium (K) | Sulfur (S) | Boron (B) | Cobalt (Co) | | | | Molybdenum (Mo) | Nickel (Ni) |
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