Sediment-related growth limitation of Elodea nuttallii as indicated by a fertilization experiment

abonos abonos fosfatados abonos nitrogenados abonos potasicos aquatic weeds azote biologia biologie biology ecologia ecologie ecology efficiency eficacia elodea nuttallii engrais engrais potassique fertilizers fosforo growth rate hydrocharitaceae malezas mauvaise herbe mauvaise herbe aquatique nitrogen nitrogen fertilizers nutrientes nutrients phosphate fertilizers phosphore phosphorus potash fertilizers potasio potassium substance nutritive taux de croissance uses usos utilisation weeds