Cadmium Solubility and Phytoavailability in Sludge‐Treated Soil: Effects of Soil Organic Carbon

Slow mineralization of organic matter in sewage sludge‐treated soil could release metals into more labile forms, which would then be more available for plant absorption. We examined the effect of soil organic matter decomposition on the phytoavailability of Cd in soils which, prior to this experiment, received 0 (control), 22.5, 45, 90, 180 Mg ha −1 yr −1 of sewage sludge for 6 yr. At the commencement of the experiment, one‐half of the...