Advance Centrefor Research on Black Cotton Soils, University of Agricultural Sciences, Dharwad, Karnataka, 580 005.
Adsorption of zinc by normal and salt affected soils fitted in the Langmuir adsorption isotherm. The maximum adsorption of normal Vertisol is about 2 g kg−1 and that for salt affected soil is about 5.4 g kg−1. The bonding energy constant of normal soils was higher (3.4 L kg−1) than that of salt affected soils (0.5 L kg−1). Release of Na, K and Ca + Mg was more with the zinc adsorption in salt affected soils compared to normal soils.
Zinc adsorption, salt affected soil, release of cations
