Plant guide:🍌 Banana
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Nutrients

Magnesium Deficiency in Banana

Commonly affects: Musa acuminata, M. balbisiana (Banana)

Yellowing appears between the leaf veins on older leaves while veins stay green, sometimes with a reddish-purple tinge along the margins.

Potential Causes

  1. 1Magnesium-poor soil, common in sandy or heavily leached growing media
  2. 2High potassium fertilisation competing with magnesium uptake
  3. 3Cool soil temperatures reducing root uptake efficiency

Solution Steps

  1. 1Apply a diluted Epsom salt solution as a soil drench or foliar spray
  2. 2Repeat every 3-4 weeks until new growth shows normal colour
  3. 3Balance potassium feeding with adequate magnesium in the fertiliser programme

Prevention Tip

A diluted Epsom salt drench every few weeks is a simple, effective magnesium supplement for banana plants showing this pattern.