Abstract
The interaction between copper and phosphorus was studied in a pot experiment involving a factorial combination of three levels of copper and three levels of phosphorus applied to maritime pine seedlings growing in podzolic sand.
Biomass measurement showed that a single copper fertilization could be toxic to the plant and that better growth was obtained with a combination of both phosphorus and copper fertilization. Copper toxicity was shown to be dependent on phosphorus levels in the plant, and better growth was obtained with an appropriate balance between phosphorus and copper concentrations. A reciprocal inhibition between phosphorus and copper uptake was assumed to explain this pattern.
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Saur, E. Interactive effects of P-Cu fertilizers on growth and mineral nutrition of maritime pine. New Forest 7, 93–105 (1993). https://doi.org/10.1007/BF00034193
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DOI: https://doi.org/10.1007/BF00034193