Adsorption-desorption of Boron in Major Soils of India
2013
and S.P. Datta, Abir Dey, B.S. Dwivedi, M.C. Meena
Studies on adsorption of boron (B) undertaken in 12 soils representing different agro-ecological regions ofIndia revealed that the adsorption of added B was in the order: Vertisols > Inceptisols > Alfisols. Higherthe concentration of added B solution, greater was the variability in B adsorption. Soil within each orderalso differed in B adsorption. Of the three adsorption equations namely, Freundlich, Langmuir and Temkinfitted to the data, Freundlich and Langmuir equations explained the adsorption behaviour of the soils, yetbased on prediction coefficients (R2) Freundlich appeared the best fit for Vertisols and Inceptisols, andLangmuir for Alfisols which showed lowest B adsorption. Freundlich constant ‘a’ and Langmuir constant‘b’ were positively correlated with free CaCO3, CEC and clay content. Desorption of added B was in theorder: Inceptisols > Vertisols > Alfisols. Desorption of B increased with an increase in soil pH, whereas itdecreased with an increase in organic C, clay and CEC.
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Este registro bibliográfico ha sido proporcionado por Indian Council of Agricultural Research