@inproceedings{orgprints10398,
           title = {N released from organic amendments is affected by soil management history},
          author = {M. Palmer and J.M Cooper and A. Flie\ssbach and J. Melville and C. Turnbull and P. Shotton and C. Leifert},
            year = {2007},
        keywords = {organic farming, N mineralisation, plant bioassay, Anbautechnik einj?hrige Kulturen, Bodenfruchtbarkeit, QLIF, },
             url = {http://orgprints.org/10398/},
        abstract = {A ryegrass bioassay was conducted to investigate the effect of soil management history on nitrogen mineralisation from composted manure and pelleted poultry manure. Soils were used from 2 field experiments comparing conventional and organic/low input management systems.  When composted manure was added, soils  which had received high rates of composted FYM under biodynamic management released a greater amount of nitrogen for plant uptake than those with a history of mineral or fresh manure fertilisation, suggesting that biological preconditioning may result in greater efficiency of composted FYM as a nitrogen source for plants.  ?Native? N mineralisation was found to be related to total soil N content.}
}