Ocena trwa o ci kilku gatunków traw i ro lin motylkowatych w runi kowej na glebie torfowo-murszowej

The aim of this paper was to evaluate persistency of several grass and legume species in meadow sward on peat-muck soil. The studies were carried out in 1996-2007 at the Didactic-Research Station in Sosnowica on peat-muck soil (Mt II). In 1996, Poa pratensis was a predominant species in the sward of this complex. The research, tested mixtures with different species composition. The basic species estimated in this studies were Lolium perenne, Festuca arundinacea, Phleum pratense, Dactylis glomerata, Trifolium repens and Trifolium pratense. In the studies, there was applied control fertilization N - 40 kg ha-1, P - 35 kg ha-1 i K - 100 kg ha-1. During 12-years' studies, meadow sward considerably varied. It was caused by a varied ground water level, total of precipitations and temperatures in the growing season in particular years of the studies. Lolium perenne, Festuca arundinacea and Dactylis glomerata were characterized by the largest persistency and share stability, considerably limiting simplification of species composition as well as the domination of Poa pratensis in meadow sward. However, legumes (Trifolium pratense and Trifolium repens) as well as Phleum pratense were very short-lived species in the tested habitat.