@misc{orgprints5514,
          volume = {296},
           month = {May},
           title = {Soil Fertility and Biodiversity in Organic Farming},
          author = {Paul M\"ader and Andreas Fliessbach and David Dubois and Lucie Gunst and Padruot Fried and Urs Niggli},
            year = {2002},
           pages = {1694--1697},
         journal = {Science},
        keywords = {DOC-trial, soil, efficiency, long-term trial, farming system, Bodenfruchtbarkeit, DOK},
             url = {http://orgprints.org/5514/},
        abstract = {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.}
}