Conversion of degraded pastures into pastures edified by Festuca rubra and Agrostis capillaris

摘要

The paper presents the cumulated effort of using an improvement system based on mineral fertilization and more frequent cuts, on the phytomass quantity and quality of a phytocoenosis edified by Festuca rubra -Agrostis capi/laris -Nardus stricta (El) and by Festucarubra- Agrostis capi/laris (E2). An improvement of the floristical composition and a higher annual grass production (more than 3 t DM/ha for the first cut) resulted when the frequency of Nardus stricta species was decreased and when mesotroph species with feeding potential (Festuca rubra, Poa pratensis. Agrostis capilaris) proliferated. The nutritive value showed minor differences for DCP and NE in El, correlated especially with the stage of vegetation at cut. The environmental conditions improved by fertilization and varied cutting frequency determined the conversion of pastures degraded by Nardus stricta into pastured edified by Festuca rubra and Agrostis capi/laris