Macroelement | Region and Function | Deficiency symptom |
Nitrogen (N) | component of proteins, nucleic acids, porphyrins, and coenzymes. | Chlorosis appears first in older leaves, dormancy of lateral buds, delay flowering. |
Phosphorus (P) | Component of ATP and NADP. Involved in energy transfer. | Reduced growth, promotes leaf fall and delay flowering. •Tea yellow disease |
Sulfur (S) | component of sulphur containing vitamins(biotin, thiamine) and coenzyme-A. | Chlorosis in young leaves. |
Calcium (Ca) | component of middle lamella. It helps to stabilize the structure of chromosomes, required for the development of root and stem apex, conversion of toxic oxalic acid to calcium oxalate. | Wilther tip disease. Death of root and tips. |
Magnesium (Mg) | component of chlorophyll. Required for ribosomes. | The appearance of necrotic spots. |
Potassium (K) | it is required as a cofactor for about 40 enzymes. Essential for permeability, stomatal movement and for translocation of food. | Inhibit protein synthesis. |