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Applied and Environmental Soil Science
Volume 2014, Article ID 379012, 10 pages
http://dx.doi.org/10.1155/2014/379012
Research Article

Spatial Variability of Physical Soil Quality Index of an Agricultural Field

Soil Science Discipline, Khulna University, Khulna 9208, Bangladesh

Received 31 December 2013; Revised 5 April 2014; Accepted 7 April 2014; Published 4 May 2014

Academic Editor: Teodoro M. Miano

Copyright © 2014 Sheikh M. Fazle Rabbi et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A field investigation was carried out to evaluate the spatial variability of physical indicators of soil quality of an agricultural field and to construct a physical soil quality index (SQ ) map. Surface soil samples were collected using m grid from an Inceptisol on Ganges Tidal Floodplain of Bangladesh. Five physical soil quality indicators, soil texture, bulk density, porosity, saturated hydraulic conductivity ( ), and aggregate stability (measured as mean weight diameter, MWD) were determined. The spatial structures of sand, clay, and were moderate but the structure was strong for silt, bulk density, porosity, and MWD. Each of the physical soil quality indicators was transformed into 0 and 1 using threshold criteria which are required for crop production. The transformed indicators were the combined into SQ . The kriged SQ map showed that the agricultural field studied could be divided into two parts having “good physical quality” and “poor physical soil quality.”