Adsorption of nitrate, chloride and sulfate by some highly weathered soils from south-east queensland

摘要: Soil was collected from a number of sites and depths to 300 cm within four great soil groups (krasnozem, red earth, xanthozem, podzolic). Nitrate, chloride sulfate adsorption were determined at the pH. Various properties likely influence magnitude determined, their relative importance assessed using stepwise multiple regression. The subsoils all adsorbed nitrate ranging up 0.47 mmoles/100 g 0.005 M potassium solution. mean for decreased in order krasnozem, earth podzolic. Chloride largely equivalent that nitrate. variations between could be attributed changes organic matter, smectite minerals, hydroxy aluminium, surface area