Adsorption-desorption was studied by batch equilibrium technique at 37+1 C at different concentrations of oxadiargyl and butachlor in selected soils of Andhra Pradesh. Desorption isotherms showed a considerable hysteresis which was more prominent when desorption was carried out at higher concentrations of adsorbed oxadiargyl and butachlor. Desorption isotherms at lowest level of adsorbed herbicide concentration were close to adsorption isotherms. The cumulative desorption after five desorption steps was significantly different for all the initial concentrations of adsorbed herbicide for all the soils. Desorption of these herbicides was higher in Alfisol than Vertisol, might be attributed to low organic carbon and low clay content. The variation in per cent desorbed may be due to heterogeneity involved in different soils, that vary widely in type and energy of bonding. Desorption isotherms confirmed to Freundlich's equation and the Freundlich's constants increased with increasing initial concentration of adsorbed herbicide thus confirming the irreversible nature of the adsorption of oxadiargyl and butachlor on these soils