Penfold, Mr. Chris and McNeill, Dr. Ann (2008) Agronomic options for the management of phosphorus in Australian rain-fed organic broadacre farming systems. Poster at: Cultivating the Future Based on Science: 2nd Conference of the International Society of Organic Agriculture Research ISOFAR, Modena, Italy, June 18-20, 2008.
RTF (Rich Text Format)
The paper is an overview of strategies for agronomic management of P in organic broad-acre farming systems within the Australian rain-fed cereal/livestock belt. It concludes that to raise and maintain adequate plant-available P in these systems the importation of organic manures or composts from off-farm will be required, although the immediate issue may be access to economically viable sources. Improving the P-use efficiency of the system by incorporating species into rotation or intercropping systems that are able to access P from less soluble sources has been a successful strategy elsewhere in the world and deserves further research effort in Australia. Agronomic management to maximise quantity and quality of pasture and crop plant residues undoubtedly builds labile soil organic matter and facilitates P cycling, but the strategy may be of limited benefit in low rainfall areas that do not have the capacity to produce large plant biomass inputs. Progress in selection and breeding for cereal genotypes that are more P-efficient and other plant genotypes that can access less labile P sources is gaining momentum but still remains a long term prospect.
|EPrint Type:||Conference paper, poster, etc.|
|Type of presentation:||Poster|
|Keywords:||phosphorus, manures, composts, P-efficiency, organic matter|
|Subjects:||Soil > Nutrient turnover|
|Research affiliation:|| Australia > Other organizations|
International Conferences > 2008: IFOAM OWC: Research Track / ISOFAR > 2.2 Nutrient management
|Deposited By:||Penfold, Mr. Chris|
|Deposited On:||02 Oct 2008|
|Last Modified:||12 Apr 2010 07:36|
|Refereed:||Peer-reviewed and accepted|
|Additional Publishing Information:||This paper is published in the conference proceedings: |
Neuhoff, Daniel; Halberg, Niels; Alfldi, Thomas; Lockeretz, William; Thommen, Andreas; Rasmussen, Ilse A.; Hermansen, John; Vaarst, Mette; Lck, Lorna; Carporali, Fabio; Jensen, Henning Hgh; Migliorini, Paola and Willer, Helga, Eds. (2008) .Cultivating the Future Based on Science. Proceedings of the Second Scientific Conference of the International Society of Organic Agriculture Research (ISOFAR), held at the 16th IFOAM Organic World Congress in Cooperation with the International Federation of Organic Agriculture Movements (IFOAM) and the Consorzio ModenaBio, 18 . 20 June 2008 in Modena, Italy.. International Society of Organic Agriculture Research (ISOFAR), c/o IOL, DE-Bonn, Research Institute of Organic Agriculture FiBL, CH-Frick. http://orgprints.org/13672 and http://orgprints.org/13674
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