[Preliminary study on availability of Mn, Fe, Zn and Cu in the soil determined through different methods and its correlation with the foliar contents in olive (Olea europaea L.), at Azapa valley, Tarapaca, first region, Chile]

analyse de tissus chile chili cinc cobre copper cuivre disponibilidad de nutrientes fer fertilidad del suelo feuille hierro hojas iron leaves manganese manganeso nutrient availability olea europaea soil fertility tissue analysis zinc