the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
The influence of pulsed redox conditions on soil phosphorus
Abstract. The effects of eleven pulsed reduction-oxidation cycles (20 and 2 days, respectively) on soil phosphorus (P) dynamics are compared for 12 soils having contrasting properties and overfertilised with respect to P. Incubation conditions simulated transient waterlogging of the soil profile and involved repeated sampling and analysis of both the solution and solid phase P forms. An initial increase in P concentration occurred upto and including the fourth full cycle was followed by a sharp decline in concentration for all but one soil. Accompanying changes in the main extractable forms of P, which appeared to be cumulative, could be summarised as a general decline in the organic P fraction and an overall increase in amorphous associated inorganic forms of P. The fact that up to 60% of the total soil P was demonstrated to change its sensitivity for a particular extractant suggests that these operationally defined P forms can experience substantial transformations. There was also a suggestion that certain changes in P forms may not be reversible. While the laboratory conditions represent an extreme situation changes in timing and frequency of intense precipitation events, as predicted in many climate change scenarios, may increase the risk of episodic soil waterlogging. The potential onset of reducing conditions even for periods of less than twenty days will influence soil P dynamics and short-term bioavailable P. Various mechanisms are involved but the robustness of sequential extraction procedures and general soil test methods (e.g. Olsen) for quantifying and reliably distinguishing specific soil P forms/associations are questioned.
- Preprint
(1289 KB) - Metadata XML
- BibTeX
- EndNote
- RC C4576: 'the topic is within the scope of biogeosciences', Anonymous Referee #1, 04 Jan 2011
- RC C5289: 'Review and Discussion of "The influence of pulsed redox-condtions on soil phosphorus" submitted by Scalenghe et al.', Anonymous Referee #2, 30 Mar 2011
-
EC C5295: 'Editor comment', Kirsten Küsel, 01 Apr 2011
- AC C5479: 'Reply to reviewers', Riccardo Scalenghe, 11 May 2011
- RC C4576: 'the topic is within the scope of biogeosciences', Anonymous Referee #1, 04 Jan 2011
- RC C5289: 'Review and Discussion of "The influence of pulsed redox-condtions on soil phosphorus" submitted by Scalenghe et al.', Anonymous Referee #2, 30 Mar 2011
-
EC C5295: 'Editor comment', Kirsten Küsel, 01 Apr 2011
- AC C5479: 'Reply to reviewers', Riccardo Scalenghe, 11 May 2011
Viewed
HTML | XML | Total | BibTeX | EndNote | |
---|---|---|---|---|---|
887 | 762 | 50 | 1,699 | 44 | 38 |
- HTML: 887
- PDF: 762
- XML: 50
- Total: 1,699
- BibTeX: 44
- EndNote: 38
Cited
7 citations as recorded by crossref.
- Ferric chloride amendment reduces phosphorus losses from flooded soil monoliths to overlying floodwater E. Van et al. 10.1139/cjss-2021-0135
- Organic materials with high P and low C:P ratio improve P availability for lowland rice in highly weathered soils: Pot and incubation experiments S. Rinasoa et al. 10.1002/jpln.202100266
- Conservation practice effectiveness and adoption: unintended consequences and implications for sustainable phosphorus management R. Dodd & A. Sharpley 10.1007/s10705-015-9748-8
- Mechanisms Responsible for Soil Phosphorus Availability Differences between Sprinkler and Furrow Irrigation J. Ippolito et al. 10.2134/jeq2019.01.0016
- Use of Industrial Wastes as Media in Constructed Wetlands and Filter Beds—Prospects for Removal of Phosphate and Metals from Wastewater Streams R. Haynes 10.1080/10643389.2014.924183
- Phosphorus mobilization from intact soil monoliths flooded under simulated summer versus spring snowmelt with intermittent freeze–thaw conditions C. Weerasekara et al. 10.1002/jeq2.20182
- Decoupled trophic responses to long‐term recovery from acidification and associated browning in lakes T. Leach et al. 10.1111/gcb.14580