Symptoms
                                Proceeding from the leaf tip, older leaves become pale green with beading of chlorophyll (easy to reveal by holding leaf to sunlight). Striped appearence because of interveinal chlorosis. Small bright freckles spread over the leaf.
Leaf tip shows beginning necrosis.
                            
                                Reasons
                                Magnesium deficiency
                            
                                Symptoms
                                Older leaves become pale green with beading of chlorophyll. Chlorosis and Necrosis of leaf margins, proceeding from leaf tip, can be seen in more severe cases.
Easy to reveal by holding leaf to sunlight.
                            
                                Reasons
                                Magnesium deficiency
Drought can also cause marginal necrosis.
                            
                                Symptoms
                                Older leaves become pale green with beading of chlorophyll. Chlorosis and Necrosis of leaf margins, proceeding from leaf tip, can be seen in more severe cases.
Plant growth is stunted.
Easy to reveal by holding leaf to sunlight.
                            
                                Reasons
                                Magnesium deficiency
Drought can also cause marginal necrosis.
                            
                                Symptoms
                                Leaves appear pale green with beading of the chlorophyll. Leaves with more severe Mg deficiency (centre) show leaf margin necrosis.
                            
                                Reasons
                                Magnesium deficiency
Drought can cause similar symptoms of margin necrosis.
                            
                                Symptoms
                                Affected leaves appear pale green with beading of the chlorophyll.
                            
                                Reasons
                                Magnesium deficiency
                            
                                Symptoms
                                Affected leaves appear pale green with beading of the chlorophyll.
                            
                                Reasons
                                Magnesium deficiency
                            
Asia and Oceania