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Title: The chemical nature of P accumulation in agricultural soils - implications for fertiliser management and design: an Australian perspective
Contributor(s): McLaughlin, Mike J (author); McBeath, Therese M (author); Smernik, Ron (author); Stacey, Sam P (author); Ajiboye, Babasola (author); Guppy, Christopher  (author)orcid 
Publication Date: 2011
DOI: 10.1007/s11104-011-0907-7
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Abstract: Many agricultural soils worldwide in their natural state are deficient in phosphorus (P), and the production of healthy agricultural crops has required the regular addition of P fertilisers. In cropping systems, P accumulates almost predominantly in inorganic forms in soil, associated with aluminium, calcium and iron. In pasture soils, P accumulates in both inorganic and organic forms, but the chemical nature of much organic P is still unresolved. The P use efficiency (PUE) of fertilisers is generally low in the year of application, but residual effectiveness is important, highlighting the importance of soil P testing prior to fertiliser use. With increasing costs of P fertiliser, various technologies have been suggested to improve PUE, but few have provided solid field evidence for efficacy. Fluid fertilisers have been demonstrated under field conditions to increase PUE on highly calcareous soils. Slow release P products have been demonstrated to improve PUE in soils where leaching is important. Modification of soil chemistry around the fertiliser granule or fluid injection point also offers promise for increasing PUE, but is less well validated. Better placement of P, even into subsoils, also offers promise to increase PUE in both cropping and pasture systems.
Publication Type: Journal Article
Source of Publication: Plant and Soil, 349(1-2), p. 69-87
Publisher: Springer Netherlands
Place of Publication: The Netherlands
ISSN: 1573-5036
Field of Research (FOR): 050304 Soil Chemistry (excl Carbon Sequestration Science)
Socio-Economic Outcome Codes: 829999 Plant Production and Plant Primary Products not elsewhere classified
860702 Chemical Fertilisers
Peer Reviewed: Yes
HERDC Category Description: C1 Refereed Article in a Scholarly Journal
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Appears in Collections:Journal Article
School of Environmental and Rural Science

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