- Title
- Phosphorus-cadmium interactions in paddy soils
- Creator
- Seshadri, B.; Bolan, N. S.; Wijesekara, H.; Kunhikrishnan, A.; Thangarajan, R.; Qi, F.; Matheyarasu, R.; Rocco, C.; Mbene, K.; Naidu, R.
- Relation
- Geoderma Vol. 270, p. 43-59
- Publisher Link
- http://dx.doi.org/10.1016/j.geoderma.2015.11.029
- Publisher
- Elsevier
- Resource Type
- journal article
- Date
- 2016
- Description
- Regular application of phosphate (P) fertilisers has been identified as the main source of heavy metal(loid) contamination including cadmium (Cd) in agricultural soils. Some of these P fertilisers that act as a source of Cd contamination of soils have also been found to act as a sink for the immobilisation of this metal(loid). In paddy soils, redox reactions play an important role in the (im)mobilisation of nutrients and heavy metal(loid)s, as a result of flooding of the rice plains. Although a number of studies have examined the potential value of P compounds in the immobilisation of metals in contaminated soils, there has been no comprehensive review on the mechanisms involved in the P-induced (im)mobilisation of Cd in paddy soils. There are a number of factors that influences P induced Cd (im)mobilisation in paddy soils that include pH, redox reactions, liming effect, rhizosphere acidification and root iron plaques. Following a brief overview of the reactions of Cd and common P compounds that are used as fertiliser in soils, the review focuses on the above mentioned mechanisms for the (im)mobilisation of Cd by P compounds in paddy soils. The role of iron plaques on Cd status in soil and rice plants is also discussed followed by a summary and future research needs.
- Subject
- phosphorus; cadmium; (im)mobilisation; redox reactions; paddy soil; iron plaques
- Identifier
- http://hdl.handle.net/1959.13/1347002
- Identifier
- uon:29971
- Identifier
- ISSN:0016-7061
- Rights
- © 2016. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/.
- Language
- eng
- Full Text
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