%A M. Palmer
%A J.M Cooper
%A A. Flie?bach
%A J. Melville
%A C. Turnbull
%A P. Shotton
%A C. Leifert
%T N released from organic amendments is affected by soil management history
%X 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.
%D 2007
%K organic farming, N mineralisation, plant bioassay, Anbautechnik einj?hrige Kulturen, Bodenfruchtbarkeit, QLIF, 
%L orgprints10398