The importance of magnesium (Mg): it is essential for photosynthesis.
It is a component of chlorophyll, a green pigment, an active participant in the photosynthetic process and helps the absorption of phosphorus.
Magnesium (Mg) deficiency appears initially in older leaves, as the main symptom is interveinal chlorosis, some plants may have a reddish color. The leaves turn yellow at the edges and later between the veins, and necrosis may occur in these regions.
