“EFFECT OF COMPOSTED POULTRY MANURE AND BIOCHAR ON BIOACCUMULATION OF LEAD/ZINC IN OKRA (ABELMOSCHUS ESCULENTUS. L.) IN AMAGU MINING SOILS” (2022) FUDMA Journal of Agriculture and Agricultural Technology, 8(1), pp. 38–48. doi:10.33003/jaat.2022.0801.073.