Nardus stricta L. and Festuca rubra L. meadow under management with organic inputs

摘要

Permanent grasslands dominated by Nardus stricta L. and Festuca rubra L. are an important source of fodder in the Dorna Region of Romania and are mostly used for cattle grazing. Improving soil fertility through the application of manure causes changes infloristic composition and proportion of species, fostering valuable species, thus contributing to the increase of production and the improvement of forage quality. The research was carried out in §aru-Dornei, from 2007 to 2014, on an area located at analtitude of 940 m, with a slope of 10°. We followed the effects of fertilization with 20-50 Mg ha~(-1) manure, applied annually or every two years, on production, biodiversity and vegetation structure in a meadow dominated by Nardus stricta and Festucarubra. Manure application had a positive effect on sward structure, reducing the cover of the dominant species Nardus stricta, in favour of valuable grasses (Festuca rubra, Arrhenatherum elatius and Trisetumflavescens) and legumes (Lotus corniculatus, Trifolium repens and Trifolium pratense).