Fig.Ā 1From: Diversity in phosphorus mobilisation and uptake in ectomycorrhizal fungiSolubility isotherms for indicated crystalline phases. Activity of calcium was arbitrarily set at pCaā=ā2.5. The activity of Al3+ and Fe3+ were controlled by the solubility of their oxides (redrawn from Fig.Ā 9.3 in Barber 1984)Back to article page