Title: COMPARISON OF EXTRACTANTS FOR ASSESSING Fe, Mn, Cu AND Zn AVAILABILITY IN SOILS
Abstract: The available status of Fe, Mn, Cu and Zn in two soils (Melandaha-Silt loam and Dhamrai-Silty clay loam) was determined by two extraction methods (0.5 M DTPA and 0.1 N HCI). The soils previously treated with various composts and/or compost plus fertilizer and Amaranthus was grown upto 42 days. After harvest of Amaranthus, the soils were extracted with 0.5 M DTPA and 0.1 N HCI and the extracts were analyzed for trace elements contents. The availability of trace elements varied significantly with the extractants used and the highest values were found for 0.1 N HCI.