Sewage sludge: Soil conditioner and nutrient source, 2: Availability of Cu, Zn, Pb and Cd to barley in a pot experiment

absorption de substances nutritives acondicionadores del suelo bourgeon buds cadmio cadmium cinc cobre conditionneur de sol conduite de la culture copper crop management cuivre engrais organique hordeum vulgare lead lodos residuales manejo del cultivo nutrient transport nutrient uptake organic fertilizers plomb plomo pot experimentation racine roots sewage sludge soil conditioners transport des substances nutritives transporte de nutrientes yema (planta) zinc