Abstract
Rice (Oryza sativa L.) was grown in earthen pots containing soils of three different textures (clay loam, sandy clay loam and sandy loam) and treated separately with different levels of cadmium (0, 1, 3, 5, 7, 9 mgkg-1) and lead (0, 10, 20, 30, 40, 50 mgkg-1). Grain yield, shoot and root dry weights decreased by 18-28, 17-35 and 27-54 %, respectively at the highest Cd treatment and 16-34, 9-24 and 28-43 %, respectively at the highest Pb treatment as compared to the control. The Cd and Pb application affected grain yield significantly except for Pb in sandy clay loam soil. The concentration of Cd in grain significantly increased at 7, 1, 1 mg Cd kg-1 soil treatment from the control in clay loam, sandy clay loam and sandy loam soil, respectively. Treatments at 10, 20 and 50 mg Pb kg-1soil caused significantly higher Pb concentration in grain in sandy loam, sandy clay loam and clay loam soil, respectively as compared to the control. In general, Cd and Pb contents in shoot and root increased with increasing Cd and Pb treatments, respectively in all the three soils. Among the soils, accumulation of Cd and Pb in rice followed the order: sandy loam > sandy clay loam > clay loam soil. Cd and Pb concentration in plant parts were highly correlated with Cd and Pb application in soils respectively.
M.G. Kibria1*,, K.T. Osman1 , M. J. Ahmed2. (2006) Cadmium and lead uptake by rice (Oryza sativa L.) grown in three different textured soils , The Journal Soil & Environment , Volume 25, Issue 2.
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