Copper accumulation in soils and plants after long-term fungicide use in Tanzania and measures to reduce copper availability

cash crops cobre coffea copper cuivre cultivos comerciales culture de rapport edaphic factors enfermedades fungosas feuille fitotoxicidad fongicide fungal diseases fungicidas fungicides highlands hojas indicator plants leaves lutte antipollution maladie fongique phytotoxicity plant soil relations plantas indicadoras plante indicatrice pollution by agriculture pollution control pollution du sol pollution par l'agriculture relaciones planta suelo relation plante sol residues residuos soil pollution soil toxicity tanzania tanzanie toxicidad del suelo