Responses of Leymus arenarius to nutrients: improvement of seed production and seedling establishment for land reclamation

abonos nitrogenados azote dunas dune dunes engrais retard establecimiento de plantas iceland islande islandia leymus leymus arenarius mejora de pastizales nitrogen nitrogen fertilizers nutrientes nutrients pasture improvement plant establishment production de semences reclamation seed production slow release fertilizers substance nutritive