Boron Adsorption-Desorption Characteristics of Some Major Soil Groups of India

A study was undertaken to compare B adsorption-desorption characteristics of Haplustert, Haplustalf, Calciorthent and Ustochrept. Calciorthent showed maximum B sorption capacity followed by Haplustert> Haplustalf> Ustochrept. Such differences in B sorption capacity may be attributed to differences in pH and content of CaCO₃, clay, organic C and amorphous Fe oxides. Ustochrept retained B more strongly than other soils. Desorption study indicated that B desorbed almost in reversible way in Calciorthent and Haplustert. However, it showed hysteresis in Haplustalf and Ustochrept.