title: Impact of industrial effluent on growth and yield of rice (Oryza sativa L.) in silty clay loam soil.
abstract: Degradation of soil and water from discharge of untreated industrial effluent is alarming in Bangladesh. Therefore, buildup of heavy metals in soil from contaminated effluent, their entry into the food chain and effects on rice yield were quantified in a pot experiment. The treatments were comprised of 0, 25%, 50%, 75% and 100% industrial effluents applied as irrigation water. Effluents, initial soil, different parts of rice plants and post-harvest pot soil were analyzed for various elements, including heavy metals. Application of elevated levels of effluent contributed to increased heavy metals in pot soils and rice roots due to translocation effects, which were transferred to rice straw and grain. The results indicated that heavy metal toxicity may develop in soil because of contaminated effluent application. Heavy metals are not biodegradable, rather they accumulate in soils, and transfer of these metals from effluent to soil and plant cells was found to reduce the growth and development of rice plants and thereby contributed to lower yield. Moreover, a higher concentration of effluent caused heavy metal toxicity as well as reduction of growth and yield of rice, and in the long run a more aggravated situation may threaten human lives, which emphasizes the obligatory adoption of effluent treatment before its release to the environment, and regular monitoring by government agencies needs to be ensured.
authors: Department of Environmental Sciences, Jahangirnagar University, Savar, Dhaka 1342, Bangladesh. Electronic address: anwarbuet2007@yahoo.com.
authors: Mohammad
authors: M
authors: Anwar Hossain
authors: Department of Soil Science, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur 1706, Bangladesh.
authors: Golum Kibria Muhammad Mustafizur
authors: GK
authors: Rahman
authors: Department of Soil Science, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur 1706, Bangladesh.
authors: Mohammad Mizanur
authors: MM
authors: Rahman
authors: Department of Bioenvironmental Science, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur 1706, Bangladesh.
authors: Abul Hossain
authors: AH
authors: Molla
authors: Department of Environmental Sciences, Jahangirnagar University, Savar, Dhaka 1342, Bangladesh.
authors: Mohammad
authors: M
authors: Mostafizur Rahman
authors: Department of Environmental Sciences, Jahangirnagar University, Savar, Dhaka 1342, Bangladesh.
authors: Mohammad
authors: M
authors: Khabir Uddin
mesh_terms: D000383:Agriculture; D000538:Aluminum Silicates / Q000032:analysis; D000077215:Clay; D004784:Environmental Monitoring; D019216:Metals, Heavy / Q000378:metabolism*; D012275:Oryza / Q000254:growth & development* / Q000378:metabolism; D018517:Plant Roots / Q000254:growth & development / Q000378:metabolism; D012989:Soil Pollutants / Q000378:metabolism*
chemical_list: D000538:Aluminum Silicates; D019216:Metals, Heavy; D012989:Soil Pollutants; D000077215:Clay
keywords: Biomass; Crop yield; Heavy metal; Industrial effluent; Soil pollution