36cb1f3a-c0fe-4f99-ba5f-a9f2b4494431 dataset Data infodesk ISRIC - World Soil Information data@isric.org Custodian ISRIC - World Soil Information (WDC - Soils) data@isric.org 2025-02-05T08:41:30 ISO 19115:2003/19139 2003/Cor.1:2006 4326 EPSG Global distribution of soil phosphorus retention potential 2011-06-01 36cb1f3a-c0fe-4f99-ba5f-a9f2b4494431 Limited availability of P in soils to crops may be due to deficiency and/or severe P retention. Earlier studies that drew on large soil profile databases have indicated that it is not (yet) feasible to present meaningful values for “plant-available” soil P, obtained according to comparable analytical methods, that may be linked to soil geographical databases derived from 1:5 million scale FAO Digital Soil Map of the World, such as the 5 x 5 arc-minute version of the ISRIC-WISE database. Therefore, an alternative solution for studying possible crop responses to fertilizer-P applied to soils, at a broad scale, was sought. The approach described in this report considers the inherent capacity of soils to retain phosphorus (P retention), in various forms. Main controlling factors of P retention processes, at the broad scale under consideration, are considered to be pH, soil mineralogy, and clay content. First, derived values for these properties were used to rate the inferred capacity for P retention of the component soil units of each map unit (or grid cell) using four classes (i.e., Low, Moderate, High, and Very High). Subsequently, the overall soil phosphorus retention potential was assessed for each mapping unit, taking into account the P-ratings and relative proportion of each component soil unit. Each P retention class has been assigned to a likely fertilizer P recovery fraction, derived from the literature, thereby permitting spatially more detailed, integrated model-based studies of environmental sustainability and agricultural production at the global and continental level (< 1:5 million). Nonetheless, uncertainties remain high; the present analysis provides an approximation of world soil phosphorus retention potential. The files are provided in ArcGIS and QGIS format. Niels Batjes ISRIC - World Soil Information Senior Soil Scientist PO Box 353 Wageningen 6700AJ Netherlands niels.batjes@isric.org Niels Batjes ISRIC - World Soil Information (WDC - Soils) niels.batjes@isric.org Niels Batjes ISRIC - World Soil Information (WDC - Soils) niels.batjes@isric.org https://files.isric.org/public/thumbnails/other/Global_distribution_of_soil_phosphorus_retention_potential.png phosphorus nutrients Soil science Stratum Global Region Attribution 3.0 International (CC BY 3.0) 5000000 geoscientificInformation 2001-06-01 2011-06-01 -180.00 180.00 -90.00 90.00 zip Data infodesk ISRIC - World Soil Information (WDC - Soils) Paul.vangenuchten@isric.org ISRIC ISRIC - World Soil Information (WDC - Soils) info@isric.org ISRIC ISRIC - World Soil Information (WDC - Soils) info@isric.org https://www.isric.org/projects/global-assessment-soil-phosphorus-retention-potential WWW:LINK-1.0-http--related Project webpage https://www.isric.org/sites/default/files/isric_report_2011_06.pdf WWW:LINK-1.0-http--related Report https://data.isric.org/geonetwork/srv/api/records/36cb1f3a-c0fe-4f99-ba5f-a9f2b4494431/attachments/Global_distribution_of_soil_phosphorus_retention_potential.zip WWW:DOWNLOAD-1.0-http--download Global_distribution_of_soil_phosphorus_retention_potential.zip See documentation: https://isric.org/sites/default/files/isric_report_2011_06.pdf