Infiltration of Tritium‐labelled water in two subsoil loosened greyloam‐pseudogleys.On two greyloam pseudogley‐soils, subsoil loosened in 1961 tests, based on the use of truncated cylinders, could not beyond any doubt prove an amelioration of water permeation. Recently conducted investigations, using tritium labelled water demonstrated more distinctly, that water is percolating through the loosened parts faster and in larger quantities than through the unloosened more compacted