Manganese deficiency

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Bright translucent spots on young expanding leaves are often the earliest conspicuous sign (J. O'Sullivan).

The interveinal spots become sunken brown pits (J. O'Sullivan).

Diagnostic summary

  • What you see on plants

- indistinct pale green mottle of mature leaves, which may droop or curl down at the edges but are not wilted.


- fine pits on young expanding leaves, appearing first as pale spots, then becoming brown, sometimes expanding into holes.


- young leaves remain smaller than normal and may be pale or deformed.

  • May be associated with alkaline soils (high pH), such as on coral or limestone soils, or after application of lime.

  • Confirm diagnosis by painting the surface of half an expanding leaf with manganese sulfate solution, and symptoms should be reduced in a few days, compared with the other half.

Characteristics and occurrence


Confusion with other symptoms

Diagnostic tests




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