COMPARISON OF EXTRACTANTS FOR ASSESSING Fe, Mn, Cu AND Zn AVAILABILITY IN SOILS

S. R.  Molla; S. M.L  Huq

doi:10.53808/KUS.2002.4.2.0222-sc

Authors

S. R. Molla Soil Science Discipline, Khulna University, Khulna 9208, Bangladesh
S. M.L Huq Department of Soil, Water and Environment, University of Dhaka, Dhaka-1000. Bangladesh

DOI:

https://doi.org/10.53808/KUS.2002.4.2.0222-sc

Keywords:

Availability; Extractants; and Trace elements

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.

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