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https://hdl.handle.net/2440/72911
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Type: | Journal article |
Title: | Potential soil P mobilisation capacity-method development and comparison of rhizosphere soil from different crops |
Author: | Wang, Y. Hasbullah, Setia, R. Marschner, P. Zhang, F. |
Citation: | Plant and Soil: international journal on plant-soil relationships, 2012; 354(1-2):259-267 |
Publisher: | Kluwer Academic Publ |
Issue Date: | 2012 |
ISSN: | 0032-079X 1573-5036 |
Statement of Responsibility: | Ying Wang, Hasbullah, Raj Setia, Petra Marschner and Fusuo Zhang |
Abstract: | BACKGROUND: Phosphorus (P) deficiency is wide-spread in agricultural soils. In light of increasing P fertilizer costs, it is of interest to assess the capacity of soil microbes to mobilise native soil P and added P. There is currently no method to assess P mobilisation in situ. METHODS: The soil P mobilisation potential was assessed by incubating low P soil for up to 30 days with poorly available P sources; C and N were added to increase microbial activity and ensure that only P was limiting microbial growth. RESULTS: The increase in microbial P from day 0 to day 15 showed that microbes were able to mobilise P from FePO4 and phytate. The P mobilisation potential(sum of microbial and resin P) of the rhizosphere soil decreased in the following order: faba bean > chickpea and white lupin > wheat. After 10 days, up to 80% of the mobilised P was microbial P, whereas after 30 days, almost all P mobilised was resin P. CONCLUSIONS: The method developed in this study is useful assessing not only potential of a soil to mobilise P but also, by using different poorly available P sources, the mechanisms of P mobilisation. |
Keywords: | Microorganism P mobilisation potential Poorly available P. Rhizosphere |
Rights: | © Springer Science + Business Media B.V. 2011 |
DOI: | 10.1007/s11104-011-1062-x |
Published version: | http://dx.doi.org/10.1007/s11104-011-1062-x |
Appears in Collections: | Agriculture, Food and Wine publications Aurora harvest 5 Environment Institute publications |
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