Journal Article

FZJ-2015-05175

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Land use and soil factors affecting accumulation of phosphorus species in temperate soils

Stutter, M. I. (Corresponding author) ; Shand, C. A. ; George, T. S. ; Blackwell, M. S. A. ; Dixon, L. ; Bol, R.FZJ* ; MacKay, R. L. ; Richardson, A. E. ; Condron, L. M. ; Haygarth, P. M.

2015
Elsevier Science Amsterdam [u.a.]

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Please use a persistent id in citations: doi:10.1016/j.geoderma.2015.03.020

Abstract: Data on the distribution of phosphorus (P) species in soils with differing land uses and properties are essential to understanding environmental P availability and how fertiliser inputs, cropping and grazing affect accumulation of soil inorganic P (Pi) and organic P (Po) forms. We examined thirty-two temperate soils (with soil organic C concentrations 12–449 g C kg− 1 and total P 295–3435 mg P kg− 1) for biogeochemical properties of soil C, reactive surfaces and P by common indices and 31P-NMR spectroscopy on NaOH–EDTA extracts for P species. Arable soil P was dominated by inorganic orthophosphate (276–2520 mg P kg− 1), > monoester P (105–446 mg P kg− 1). The limited diesters, polyphosphates and microbial P in arable soils suggest that cropping and fertiliser inputs limit ecosystem microbial functions and P diversity. Intensive grassland had inorganic orthophosphate concentrations (233–842 mg P kg− 1) similar to monoesters (200–658 mg P kg− 1) > diesters (0–50 mg P kg− 1) and polyphosphates (1–78 mg P kg− 1). As grazing became more extensive P in semi-natural systems was dominated by organic P, including monoesters (37–621 mg P kg− 1) and other diverse forms; principally diester (0–102 mg P kg− 1) and polyphosphates (0–108 mg P kg− 1). These were related to SOC, water extractable organic carbon (WEOC) and microbial P, suggesting strong microbially-mediated processes. A number of abiotic and biotic related processes appeared to control accumulation of different soil P species and gave considerable variability in forms and concentrations within land use groups. The implications are that to increase agricultural P efficiencies mechanisms to utilise both soil Pi and Po are needed and that specific management strategies may be required for site-specific circumstances of soil C and reactive properties such as Fe and Al complexes.

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Contributing Institute(s):

1. Agrosphäre (IBG-3)

Research Program(s):

1. 255 - Terrestrial Systems: From Observation to Prediction (POF3-255) (POF3-255)

Appears in the scientific report 2015

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Database coverage:
; BIOSIS Previews ; Current Contents - Agriculture, Biology and Environmental Sciences ; IF < 5 ; JCR ; NCBI Molecular Biology Database ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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