Iron oxide deposits oh the roots ofphragmites australisrelated to the iron bound to carbonates in the soil

Abstract

Iron plague was observed on the roots of Phragmites australis (the common reed) collected at six sites in southern Ontario and Québec, Canada. Sites were chosen along a wet‐dry gradient. The accumulation of iron oxides on the roots was site‐dependent but also varied between plants and microsites. Sequential extraction of iron from soil/sediment showed that the iron plaque is highly correlated (p3) in the rhizosphere results in the precipitation of goethite on the roots.