Magnesium deficiency

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Magnesium deficiency
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A potato leaf showing magnesium deficiency

Magnesium deficiency is a common and serious disorder which is made worse, not better, by standard feeding.

Identifying Features[edit | edit source]

Discolouration begins on lower leaves and moves upwards until all foliage is affected. Yellow areas may turn brown.

Treatment[edit | edit source]

Spray with Epsom salts (½oz/pint) or use a foliar spray containing magnesium.

Prevention[edit | edit source]

Use a fertilizer which contains magnesium (Mg).

Examples[edit | edit source]