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Soil phosphorus status in organic and conventional vegetable farms in Southeast Queensland, Australia

Nachimuthu, Gunasekhar; Kristiansen, Paul; Lockwood, Peter and Guppy, Chris (2007) Soil phosphorus status in organic and conventional vegetable farms in Southeast Queensland, Australia. Poster at: 3rd QLIF Congress: Improving Sustainability in Organic and Low Input Food Production Systems, University of Hohenheim, Germany, March 20-23, 2007.

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Summary

The soil phosphorus (P) status (0-10 cm) of two farming systems (organic (OF) and conventional (CF) vegetable farms) at two locations (Gatton and Stanthorpe) was examined amongst a suite of soil fertility indicators. The P status was similar between farming systems, in contrast to some broad-acre organic systems. Examination of farm management records revealed substantial overlap between P inputs at both localities with CF systems also receiving organic inputs, e.g. green manure and composts. A statistical analysis of the effects of different inputs also indicated that P fertility did not vary significantly between farms. Soil P levels were medium to high across farm types indicating a potential environmental risk for vegetable producers particularly in sandy well drained soils. The three methods of extraction Colwell, Olsen and Resin were well correlated with each other and produced similar results indicating the similar nutrient pools exist between farming system.


EPrint Type:Conference paper, poster, etc.
Type of presentation:Poster
Keywords:organic, vegetable production, phosphorus, soil fertility, sustainability
Subjects: Soil
Research affiliation: International Conferences > 2007: 3rd QLIF Congress > 3 Crop production / soil management
Australia > University of New England
Related Links:http://orgprints.org/10417/
Deposited By: Nachimuthu, Dr Gunasekhar
ID Code:9879
Deposited On:10 Mar 2007
Last Modified:12 Apr 2010 07:34
Document Language:English
Status:Published
Refereed:Not peer-reviewed
Additional Publishing Information: The final version of this paper is published in:
Niggli, Urs; Leifert, Carlo; Alföldi, Thomas; Lück, Lorna and Willer, Helga, Eds. (2007) Improving Sustainability in Organic and Low Input Food Production Systems. Proceedings of the 3rd International Congress of the European Integrated Project Quality Low Input Food (QLIF). University of Hohenheim, Germany, March 20 – 23, 2007. Research Institute of Organic Agriculture FiBL, CH-Frick.http://orgprints.org/10417/
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