ABSTRACT
The effect of the root on the adjacent soil medium is mainly the release of organic and inorganic material into the soil. Predicting the bioavailability of trace elements to plants is a major agricultural and environmental issue. The prime entry of toxic elements in the food chain comprises the plants and the animals. Trace elements occur naturally in rocks and soils, but principally in forms that are nonavailable to living organisms. Large quantities of trace elements are released into the
environments by anthropogenic activities — for example, industrial processes, manufacturing, and agricultural amendments.
