Characteristics of ley crops in production of raw material for energy and fibre and in biological purification of nutrientrich water

agrostis gigantea alopecurus pratensis biogas biogaz bromus inermis calamagrostis deschampsia elymus repens festuca arundinacea fibre crops filters filtre filtros fuel crops galega orientalis glyceria helianthus tuberosus leymus arenarius medicago sativa melilotus miscanthus miscanthus sinensis paille paja phragmites australis plant production plantas textiles straw tratamiento de aguas residuales trifolium pratense wastewater treatment