Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/42734
Type: | Conference paper |
Title: | Management effects on biological cycling of phosphorus in Southern Australia |
Author: | Buenemann, E. Marschner, P. McNeill, A. McLaughlin, M. |
Citation: | SuperSoil 2004 [electronic resource]: 3rd Australian New Zealand Soils Conference, 5-9 December 2004, University of Sydney, Australia / Balwant Singh (ed.) |
Publisher: | Regional Institute |
Publisher Place: | on line |
Issue Date: | 2004 |
ISBN: | 1920842268 |
Conference Name: | Australian New Zealand Soils Conference (3rd : 2004 : University of Sydney) |
Statement of Responsibility: | Else K. Bünemann, Petra Marschner, Anne McNeill and M.J. McLaughlin |
Abstract: | Biological cycling of phosphorus (P) in soils includes various processes: the release and mineralisation of P from plant residues, microbial immobilisation, re-mineralisation and turnover, mineralisation of soil organic P, and flush effects due to abiotic stress, e.g. drying and rewetting. The influence of these processes on plant available P is largely unknown. We analysed soil samples from several long-term field experiments in order to assess the effect of crop rotation, tillage, P fertilization and residue management on soil P pools, especially available inorganic, microbial and total organic P. Radioisotopes (P-32, P-33) were then used to quantify P fluxes, specifically dynamics of microbial P and basal mineralisation of soil organic P. We will present results in relation to data previously obtained on a tropical Ferralsol from Kenya and to published data from temperate soils. |
Description (link): | http://www.regional.org.au/au/asssi/supersoil2004/s9/oral/1508_bunemanne.htm |
Appears in Collections: | Aurora harvest Earth and Environmental Sciences publications Environment Institute publications |
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