WoSIS latest - Phosphorus (P) - Bray I

Measured according to the Bray-I method, a combination of HCl and NH4 F to remove easily acid soluble P forms, largely Al- and Fe-phosphates (for acid soils) (mg/kg). ISRIC is developing a centralized and user–focused server database, known as ISRIC World Soil Information Service (WoSIS). The aims are to: • Safeguard world soil data "as is" • Share soil point (i.e. profile) data upon their standardization, and ultimately harmonization • Provide quality-assessed, geo-referenced soil data for a growing range of environmental applications (e.g. SoilGrids250m). The number of measured data for each property varies between profiles and with depth, generally depending on the purpose of the initial studies. Further, in most source data sets, there are fewer data for soil physical as opposed to soil chemical attributes and there are fewer measurements for deeper than for superficial horizons. Generally, limited quality information is associated with the various source data. Further information is provided in https://doi.org/10.5194/essd-12-299-2020 and https://www.isric.org/sites/default/files/WOSISprocedureManual_2020nov17web.pdf.

Global soil soil chemicophysical properties soil fertility soil water conservation phosphorus soil profiles nutrients Soil science Global