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Changes in Soil Properties with Distance in Brick Kiln Areas Around BARIsal

Anjuman Ara Rajonee
Department of Soil and Environmental Sciences, University of Barisal, Barisal, Bangladesh

Md. Jamal Uddin
Department of Soil and Environmental Sciences, University of Barisal, Barisal, Bangladesh

Abstract/ Executive Summary:

The study was conducted to evaluate the changes in soil properties due to the impacts of brick kiln in the vicinity of the Kirtonkhola River, Barisal. The study was carried out by determining the physical, Physico-chemical and chemical characteristics of soil. During the entire study period, moisture content of soil ranged from 18.77% to 56.49%; bulk density and particle density varies from 0.23 - 0.53 g/cm3 and 1.11 - 3.15 g/cm3 , respectively; soil porosity varies from 60.36% to 88.14%; pH varies from 6.98 to 8.85 and organic carbon content varies from 0.22% to 1.4%. The finding revealed that the pH of the soil decreased with increasing distance from the kiln; moisture content and organic carbon increased with distance; particle density was more or less in ideal condition for plant growth but bulk density and porosity indicate poor soil structure which is unfavorable for plant.

Keywords: Brick Kiln, Kirtonkhola River, Physical Parameters, Organic Carbon

Location: The Kirtonkhola River, Barisal, Bangladesh

Start Date: 00-00-2017

End Date: 00-00-2017

Program Area: Crop-Soil-Water Management

Commodity: Soil Physical Properties, Contamination of soil

Objectives:

To find out the status of agricultural soil in nearby brick kiln agri-environmental ecosystems.

Methodology:

Soil samples were collected in January 2017, which is the pick period of brick production in that area. Thirty-two soil samples were collected from eight different brick kilns along the bank of Kirtonkhola River. The study covered the brick kilns in 10 km distance (each one is 1 km distance from another). The soil samples are collected from 4 points of each kiln area to see the changes with distance in agricultural field. The distances are approximately 0 km, 1 km, 2 km and 3 km distance from the kilns toward the agricultural field. Detailed information about the locations and samples collected from those sites are given In case of soil sample collection and preparation, at first existing plants and vegetation were removed from the sampling points with the help of a spade. Then the aluminum core was inserted to take topsoil at a depth of 15 cm for bulk density analysis and then at least 2 kg of soil sample was taken into a polythene bag with proper labeling for further analysis. The spade was inserted to the ground as a V-shaped pattern and collected the sample. Three soil samples were collected from each point and composite sample was done by mixing it very well on a piece of paper. Soil samples were carried into the laboratory of the Department of Soil and Environmental Sciences, University of Barisal. Once the soil samples were transported to the laboratory, they were dried in the air for 7 days (at ~30?C) by spreading them in a thin layer on a clean piece of paper. Visible roots and debris were removed from the soil samples and discarded. After air-drying, a portion of larger and massive aggregates were broken down by gently crushing them using a wooden hammer. Ground samples were screened to pass through a 2 mm stainless steel sieve. The analysis was done as soon as possible to avoid any changes of the sample. The soil samples were collected and prepared according to the Soil Survey Staff. pH reading was taken using pH meter (Model: Adwa AD1000 and AD1020) where the ratio of soil: water was 1:2.5. Bulk density of soil was measured using Core method, particle density using pycnometer method and organic carbon determination was done using “Walkley and Black” oxidation method. All the analyses were done using standard procedures. A small group discussion with the local people and brick kiln workers was done in each brick kiln to observe the preliminary situations in that area. Microsoft Excel was used for the statistical and graphical evaluations.

Source of Information: Open Journal of Soil Science, 2018, 8, 118-128; ISSN Online: 2162-5379; ISSN Print: 2162-5360

Article Link (Online Journal): https://doi.org/10.4236/ojss.2018.83009

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The study area (1 km, 2 km and 3 km distance) is mainly used for agricultural cultivation. People in this area depend on agriculture. The study revealed that major properties of soil are not in ideal condition for plant growth. The decrease of soil characteristics might be due to a large number of brick kilns in this area. The peoples living in that area also said that they have got higher crop production in that area but after installations of brick kilns the crop productions decreased with time. The present situation may cause great impacts in the long run. Therefore, further research is required to identify the rate of changes in physical properties as well as in chemical properties of soil in this brick kiln-associated agricultural area.

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