<ctx:context-object timestamp="2009-08-20T14:27:25Z" xsi:schemaLocation="info:ofi/fmt:xml:xsd:ctx http://www.openurl.info/registry/docs/info:ofi/fmt:xml:xsd:ctx" xmlns:xsi="http://www.w3.org/2001/XML" xmlns:ctx="info:ofi/fmt:xml:xsd:ctx"><ctx:referent><ctx:identifier>info:oai:orgprints.org:5514</ctx:identifier><ctx:metadata-by-val><ctx:format>info:ofi/fmt:xml:xsd:oai_dc</ctx:format><ctx:metadata><oai_dc:dc xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:dc="http://purl.org/dc/elements/1.1/">
        <dc:title>Soil Fertility and Biodiversity in Organic Farming</dc:title>
        <dc:creator>Mäder, Paul</dc:creator>
        <dc:creator>Fliessbach, Andreas</dc:creator>
        <dc:creator>Dubois, David</dc:creator>
        <dc:creator>Gunst, Lucie</dc:creator>
        <dc:creator>Fried, Padruot</dc:creator>
        <dc:creator>Niggli, Urs</dc:creator>
        <dc:subject> Nutrient turnover</dc:subject>
        <dc:subject> Soil biology</dc:subject>
        <dc:subject> Biodiversity and ecosystem services</dc:subject>
        <dc:description>An understanding of agroecosystems is a key to determining effective farming systems. Here we report results from a 21-year study of agronomic and ecological performance of biodynamic, bioorganic, and conventional farming systems in Central Europe. We found crop yields to be 20% lower in the organic systems, although input of fertilizer and energy was reduced by 34 to 53% and pesticide input by 97%. Enhanced soil fertility and higher biodiversity found in organic plots may render these systems less dependent on external inputs.</dc:description>
        <dc:date>2002-05</dc:date>
        <dc:type>Journal paper</dc:type>
        <dc:type>NonPeerReviewed</dc:type>
        <dc:format>application/pdf</dc:format>
        <dc:identifier>http://orgprints.org/5514/1/Maeder-2002-Science-DOC-Trial.pdf</dc:identifier>
        <dc:format>application/pdf</dc:format>
        <dc:identifier>http://orgprints.org/5514/2/maeder-et-al-Science_suppl_mat.pdf</dc:identifier>
        <dc:identifier>Mäder, Paul; Fliessbach, Andreas; Dubois, David; Gunst, Lucie; Fried, Padruot and Niggli, Urs (2002) Soil Fertility and Biodiversity in Organic Farming. Science, 296, pp. 1694-1697.</dc:identifier>
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