Output list
Conference presentation
Published 2012
Joint Australian and New Zealand Soil Science Conference. Soil Solutions for diverse landscapes, 02/12/2012–07/12/2012, Hobart, Tasmania
Phosphorus (P) transfer from agricultural land via runoff, throughflow and leaching is of increasing concern for land managers worldwide. Previous studies suggested that organically bound P comprises a large proportion of soil P reserves in south west Western Australia (WA), but the implications of these findings for the processes and rates of P transport in soils are not known. Two contrasting soil profiles (sand and clay) from cropping land of the upper Fitzgerald River catchment in the south coast region of WA were studied in packed boxes to examine the P forms and fluxes in runoff, throughflow, leachate and soil solution after three rates of P application (equivalent to 0, 20 and 40 kg P/ha). Soil solution was collected at 5, 10 and 15 cm depths with inert soil solution samplers, and leachate was collected at the bottom of the 30 cm of packed boxes. Solutions were analysed for particulate P (PP), dissolved reactive P (DRP) and total dissolved P (TDP) while the dissolved uneactive P (DURP) was calculated by difference (TDP-DRP). Phosphorus transport increased with P rate. In the sand, DRP comprised < 35 % of TP in runoff whereas DURP and PP are about 90% of TP in runoff and leachate. In clay soil, 90 % of P losses in DURP and PP form via thoughflow and leaching while DRP constituted < 33 % of total P lost. The result suggested that major portion of mobilized P appeared to be associated with DURP and PP in runoff and leachate in association with dispersed inorganic colloidal compounds < 0.2 mm.
Conference presentation
Published 2012
3rd National Acid Sulfate Soil Conference, 05/03/2012–07/03/2012, Melbourne, Australia
Conference presentation
Published 2008
Proceedings of the Joint Conference of the Australia and New Zealand Societies of Soil Science, 01/12/2008–05/12/2008, Palmerston, New Zeealand
Conference presentation
Acidification of soils in Australia under agricultural systems
Published 2007
Abstracts on Bioremediation of Acid Sulfate Soil for Agriculture and Forestry. International Lecture Meeting for 21st Century COE Program, 01/03/2007–04/03/2007, Fujisawa, Japan
Conference presentation
Coal fines as a potential amendment for subsoil acidity in Western Australia
Published 2006
18th World Congress of Soil Science, 09/07/2006–15/07/2006, Philadelphia, Pennsylvania, USA
Conference presentation
Boron risk mapping using weight of evidence modelling
Published 2004
Annual Meeting Abstracts American Society of Agronomy, Crop Science Society of America, Soil Science Society of America, 31/10/2004–04/11/2004, Seattle, WA; USA
Conference presentation
Published 1999
Third WA Symposium on Ions in the Soil-Water-Plant Continuum, 08/04/1999, Perth, Western Australia
Conference presentation
Boron deficiency in canola in WA?
Published 1999
10th International Rapeseed Congress, 26/09/1999–29/09/1999, Canberra, Australia