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        <dc:title>A New Approach to Humus Balancing in Organic Farming </dc:title>
        <dc:creator>Brock, Christopher</dc:creator>
        <dc:creator>Hoyer, Uta</dc:creator>
        <dc:creator>Leithold, Günther</dc:creator>
        <dc:creator>Hülsbergen, Kurt-Jürgen</dc:creator>
        <dc:subject> Soil quality</dc:subject>
        <dc:description>Humus balances provide a profitable approach for humus dynamics assessment in farming practice. Nevertheless, there is a clear demand for methodological adaptation.     This article presents a new approach to humus balancing using reproducible algorithms for the estimation of balance coefficients. Humus balance coefficients for crops and organic fertilizers are estimated according to a bipartite algorithm. Humus demand  is calculated on the basis of crop yields referring to the nitrogen household in the plant-soil system. Humus supply is derived from organic matter input with plant material and fertilizers. The new approach facilitates the adaptation of the method to new situations. </dc:description>
        <dc:date>2008</dc:date>
        <dc:type>Conference paper, poster, etc. </dc:type>
        <dc:type>NonPeerReviewed</dc:type>
        <dc:format>rtf</dc:format>
        <dc:identifier>http://orgprints.org/12077/1/Brock_12077_ed.doc</dc:identifier>
        <dc:identifier>Brock, Christopher; Hoyer, Uta; Leithold, Günther and Hülsbergen, Kurt-Jürgen (2008) A New Approach to Humus Balancing in Organic Farming. Cultivating the Future Based on Science: 2nd Conference of the International Society of Organic Agriculture Research ISOFAR, Modena, Italy, June 18-20, 2008.</dc:identifier>
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