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Manipulation of Chemical Properties in Soil Under Wetland Rice Through Industrial Effluents

Md. Rafiqul Islam
Soil Science Division, Bangladesh Rice Research Institute (BRRI), Bangladesh.

Golam Kibria Muhammad Mustafizur Rahman
Department of Soil Science, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur1706, Bangladesh.

Md. Abu Saleque
Bangladesh Rice Research Institute (BRRI), Gazipur-1701, Bangladesh.

Abstract/ Executive Summary:

A laboratory experiment was conducted in the Soil Science Division of Bangladesh Rice Research Institute (BRRI) during 2010-11 aimed to determine the effects of different industrial effluents on some soil chemical properties under long-term industrial wastewater irrigated rice fields. Effluents irrigation created some differences in soil pH, electrical conductivity, and organic carbon. The pH in all soil depths was higher with wastewater irrigated rice fields. Irrigation with wastewater increased in all the effluents irrigated rice fields; the electrical conductivity (EC) was remarkably higher with all soil depth than the control field. In all the rice fields soil (Control + effluents irrigated fields), the organic carbon content (%) started to decrease sharply with the increase in soil depth. Organic carbon content was slightly higher with wastewater irrigated rice soils. Exchangeable cations (Ca, Mg, K and Na), trace elements (Zn, Fe, Mn, and Cu), and heavy metals (Pb, Cd, Cr, and Ni) were increased through irrigation with wastewater in rice -rice cropping pattern.

Keywords: Wetland rice; Industrial waste; Plant nutrients; Heavy metals

Location: Soil Science Division of Bangladesh Rice Research Institute (BRRI)

Start Date: 00-00-2010

End Date: 00-00-2011

Program Area: Crop-Soil-Water Management

Commodity: Rice, Soil chemical properties, Heavy metal in soil

Objectives:

To study the effects of different industrial effluents on some soil chemical properties.

Methodology:

Soil samples were collected from Mouchak area of Gazipur district (middle part of Bangladesh; Madhpur tract; AEZ 28) which has a long cropping history under rice–rice systems. The sampling area represents two kinds of farmers’ managed rice fields (i) irrigated with underground freshwater (control soil) and (ii) irrigated with effluent water for 8-10 years. The distance between the control and effluents irrigated field was 500 meters. The samples were collected through auger from control (rice cultivated with fresh water) and industrial wastewater treated plots in December 2010. Thirty soil samples from ten plots (six from 2 control plots and 24 from 8 effluent water receiving plots) were collected from the depth 0-10 cm, 10-20 cm, and 20-30 cm, respectively. The control and effluent irrigated plot soils were denoted by C and I, respectively. The collected samples were composited to make about 1/2 kg and samples were brought to the Soil Science Division net house of Bangladesh Rice Research Institute (BRRI), air-dried, crushed, and sieved through a 2-mm sieve prior to analysis. The obtained data were statistically analyzed following IRRISTAT version 4.3.

Source of Information: Asian Journal of Soil Science and Plant Nutrition - 5(1): 1-15, 2019

Article Link (Online Journal): DOI: 10.9734/AJSSPN/2019/v5i130054

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Results of this experiment showed that the soil's chemical properties were affected through effluent irrigation. Effluents irrigation created some differences in soil pH, electrical conductivity, and organic carbon. Exchangeable cations (Ca, Mg, K and Na), trace elements (Zn, Fe, Mn, and Cu), and heavy metals (Pb, Cd, Cr, and Ni) were increased in soils with effluents irrigation.

Knowledge Management: Journal