Al toxicity

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Stunted plants, with chlorosis and bronzing present on one variety but not the other (J. Low).  

Diagnostic summary

  • What you see on plants

- stunted growth


- small root system with yellow or brown roots


- crop may wilt readily


- yellowing, reddening or bronzing of oldest leaves.

  • Aluminium toxicity is the main cause of growth reduction on strongly acid soils. Al solubility increases rapidly at soil pH below 5 and may reach toxic concentrations.

  • May induce deficiency of phosphorus, magnesium or calcium, resulting in a range of possible symptoms in the leaves.

Characteristics and occurrence


Confusion with other symptoms

Diagnostic tests



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