http://orgprints.org/10398/ N released from organic amendments is affected by soil management history 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. Palmer, M. Cooper, J.M Fließbach, A. Melville, J. Turnbull, C. Shotton, P. Leifert, C. 4nutrient eu_qlif_sub3 uk-unew int_conf_2007qlif_3_crops annual-crop-production N released from organic amendments is affected by soil management history 2007-03-10 Palmer, M.; Cooper, J.M; Fließbach, A.; Melville, J.; Turnbull, C.; Shotton, P. and Leifert, C. (2007) N released from organic amendments is affected by soil management history. 3rd QLIF Congress: Improving Sustainability in Organic and Low Input Food Production Systems, University of Hohenheim, Germany, March 20-23, 2007. application/pdf