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Phosphorus in gypsiferous soils: the influence of soil properties of P fractionation.

Muhammad, H. J. and Jones, K. C. (1992) Phosphorus in gypsiferous soils: the influence of soil properties of P fractionation. Geoderma, 53 (1-2). pp. 97-104.

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Abstract

This paper presents the results of a study into the status and distribution of P in six gypsiferous soil profiles collected from Iraq and southern Spain. A selective extraction procedure based on a modified version of that developed by Chang and Jackson was used. The concentrations of total P and the different inorganic P fractions declined with depth in all the soil profiles. The forms of the inorganic P fractions when expressed as a percentage of the total P decreased in the order: Ca-bound P reductant-extractable P > Al-bound P > Fe-bound P > organic P > NH4Cl-extractable P. There was little difference between profiles or horizons in this general pattern of distribution. The Ca-bound fraction ranged between 61.9 and 78.6% of the total P in different horizons. It is concluded that the behaviour of P in gypsiferous soils is dominated by its interactions with Ca supplied by gypsum.

Item Type: Article
Journal or Publication Title: Geoderma
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
Departments: Faculty of Science and Technology > Lancaster Environment Centre
ID Code: 22818
Deposited By: ep_ss_importer
Deposited On: 08 Jan 2009 10:27
Refereed?: No
Published?: Published
Last Modified: 26 Jul 2012 16:06
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/22818

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