Abstract
Bangladesh Thai Aluminum (BTA) Ltd. produces anodized aluminum sections and profiles. During oxidation of discharged aluminum profile a large amount of chemicals are used, which have subsequently as wastes to the surrounding environment. The agriculture in the area is ultimately has being affected and contaminated with these industrial effluents. Against this background, a pot experiment was conducted with rice and grass grown on normal agricultural and contaminated soils to evaluate the effect of the effluents on soil and plant growth. The contaminated soil exerted significant (p≤0.05) negative effects on the growth, straw yield and nutrition of rice and grass grown on it. The more reduction (reduction over control, ROC: 55 to 67% for rice and 30 to 68% for grass) of straw dry matter yields of rice at different stages was determined as compared to grass grown on contaminated soil. The contents of N, P and K in the rice plants grown on the contaminated soil were decreased by 28, 32 and 65%, respectively. While increased (increase over normal agricultural soil, i.e. control: IOC) S and Na contents in rice by 55 and 1010% but decreased the S and Na contents in grass by 200 and 114%, respectively. Available N was determined 12 to 22 times higher in normal agricultural soil, while available S content was obtained 3 to 5 times higher in contaminated soil at different time of sampling. Type of crop showed no influence on N, P and S status of the soils
M.O. Islam1, d.H.R. Khan2 *, , A.K. Das1 , , M.S. Akhtar2 , , Y. Oki2 , T. Adachi2. (2006) Impacts of industrial effluents on plant growth and soil properties , The Journal Soil & Environment , Volume 25, Issue 2.
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