THE IMPACT OF ORGANIC AND MINERAL FERTILISERS APPLICATION ON COMPACTION AND PHYSICAL PROPERTIES OF PSEUDOGLEY-TYPE SOIL

This paper presents the results of a five-year application of mineral NPK and the ameliorative use of lime and manure on the change in compaction of pseudogley soil, with specific physical properties of the soil serving as indicators of its quality.At each treatment, soil samples were taken, and the most important physical properties were analysed.The work also included field soil compaction measurement with the penetrologer Eijkelkamp hardware version 6.0.Soil properties and soil compaction values were compared, and their correlations were analysed.The research results showed that the multi-year meliorative application of lime, manure and mineral fertilisers reduced soil compaction, on average, by 3.0 times in the 0-50 cm profile or up to 1.7 times in the 25-30 cm profile.The compaction of the studied soil (in MPa), especially in the surface layer (0-5 cm), varied significantly over the years of research, ranging from 1.08 (second year of research) to 3.30 MPa (fifth year of research).Micromorphological characteristics (aggregate composition, water resistance of structural aggregates, volumetric mass, and total porosity) clearly demonstrate a significant indirect influence on soil compaction, as evidenced by a strong correlation with soil compaction.Soil compaction exhibits a similar trend to water retention capacity (WR) and an opposite trend to water filtration rate (WFR).Reduction of compaction due to significant improvements in micromorphological and water characteristics of the soil, particularly in unfavourable climatic conditions, promotes the combined use of organic matter (manure) and limestone (Ca 2+) for a faster increase in the productivity of degraded pseudoclass.