Contents of heavy metals in commercial fertilizers and their effect on environment

allium cepa arsenic arsenico avenas avoine barley beetroot cabbages cadmio cadmium cauliflowers cebada chou pomme chrome chromium cinc coliflor compound fertilizers cromo daucus carota fertilizantes compuestos fertilizer industry industria de fertilizantes industrie des engrais lactuca lead mercure mercurio mercury nickel normas norme oats orge papa pisum sativum plomb plomo pollution du sol pomme de terre potatoes remolacha repollo secale cereale soil pollution spinacia oleracea standards tomate tomatoes zinc