Research on the effect of deep tillage on physical and water properties of compacted arable soils were conducted on arable lands located in Wojnowice in the raciborski county of the Silesia province (Poland). Two pits were made during the field works (on the field with and without deep tillage), which were then described in detail. Soils of undisturbed and disturbed structure were sampled from individual soil horizons. Soil permeability tests were conducted by each of the two pits. Granulometric composition, moisture content, humus content and characteristic soil densities were assessed in a laboratory and total porosity was computed. Analysis of the research results allowed to state that the applied deep loosening of soil lessivés using a plough affected a decrease in bulk density and increase in total porosity and soil permeability. Also an improvement of air-water relationships occurred, the proportion of gaseous phase increased whereas the share of liquid phase diminished. Conducted research demonstrated that even 20 months after the application of agromelioration measures, a positive effect on the use of the soil retentive potential is noticeable, which may result in alleviating the outcomes of droughts or floods.

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