. . . "pHKCl_ratio1-2.5" . . . "pHKCl_ratio1-2.5"@en . "pHKCl (soil reaction) in 1:2.5 soil/KCl solution (0.01-1 M)" . "Leenaars J.G.B., A.J.M. van Oostrum and M. Ruiperez Gonzalez, 2014. Africa Soil Profiles Database, Version 1.2. A compilation of georeferenced and standardised legacy soil profile data for Sub-Saharan Africa (with dataset). ISRIC Report 2014/01. Africa Soil Information Service (AfSIS) project and ISRIC - World Soil Information, Wageningen, the Netherlands. See Annex 4." .