Magnesium required by avocado trees but excessive amounts may be toxic
California Agriculture 14(7):5-6.
Published July 01, 1960
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Avocado trees are fertilized according to the pattern used for citrus, but the leaves of both species differ considerably in composition. For example, the dry matter of healthy avocado leaves usually contains about 0.7% magnesium—about double that found in citrus leaves.