Exchangeable Aluminium

Confirm aluminium toxicity that can negatively affect plant growth

This test measures:

Aluminium extractable with an dilute calcium chloride solution

Best time to run this test:

Only when the pH is below 5.5


One reason for poor plant growth in New Zealand on acid soils (those soils where pH< 5.6) can be aluminium toxicity. This test measures the exchangeable aluminium and confirms toxicity problems.


Indicator of potential aluminium toxicity on acid soils.

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