EN
Mineral composition of Trisetum flavescens was studied in 1990 in samples collected from 11 meadows situated in Wieprz river valley. Concentrations of macroelements (N, P, K, Ca, Mg) from Trisetum flavescens and from the community with the species, as well as chemical properties of soils were recorded. It was found that N, Ca and Mg contents in both types of hay significantly differed. Average contents of N, Ca. K and Mg in hay from the community were higher than in that consisting exclusively of Trisetum flavescens. In general, contents of all studied components were low and did not exceed nutritional requirement of animals.