Hou 2018; Hadley P database

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About 800 samples with P measured using Hadley method (physiochemical fractionation). Scrapped both the Chinese and English literature. We would need to expand the fractionation descriptions.

Hou, E., Tan, X., Heenan, M. et al. A global dataset of plant available and unavailable phosphorus in natural soils derived by Hedley method. Sci Data 5, 180166 (2018). https://doi.org/10.1038/sdata.2018.166