Magnesium

Magnesium [ Physiology - Chemistry ]
Abbreviation: Mg

Dictionary of botanic terminology - index of names


	*Definition*

Magnesium deficiency [ Horticulture - Phytopathology ]


	Absence or insufficiency of magnesium needed for normal growth and development.

The symptom of magnesium deficiency occurs in the older leaves first and then is exhibited in the middle leaves of the plant. A bronze yellow colouring (Interveinal chlorosis) occurs in a V-shape and the tongue of tissue along the midvein, towards the base of the leaf, usually remains green. This is a distinctive symptom of magnesium deficiency. In some cases these leaves may redden or develop dead areas along the leaf margin or between the veins.

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