The objective of the study was to analyse the content of organic matter in peat-muck soil in the conditions of a diverse use of meadow sward. The studies were carried out in 2006–2010 in a peatland complex at the Didactic-Research Station in Sosnowica. In the years 1964–1966, the fen was drained and the reclaimed land was put to agricultural use. At present, the soils of this grassland complex mostly belong to the muck soil type and the peat-muck soil subtype (Mt II). The study considered the varied frequency of sward cutting (unused meadow, meadow cut once, twice and three times) and the level of nitrogen fertilisation. The organic matter content was determined at 2 levels. In the studied year, significant changes in the organic matter content were observed, particularly under conditions of many years of no use in a very dry habitat. Under strict experimental conditions, over a 5-year-long period, the method of land use had no impact on the organic matter content. The feature analysed varied significantly in the studied years. The soil collected from higher layers was characterised by a significantly smaller organic matter content.
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