Show simple item record Steve P. en_US R. en_US David J. en_US P. M. en_US L. en_US 2009-11-26T11:47:20Z 2009-11-26T11:47:20Z 2002 en_US
dc.identifier en_US
dc.identifier.citation Cuttle , S P , Sylvester-Bradley , R , Hatch , D J , Berry , P M & Philipps , L 2002 , ' Is the productivity of organic farms restricted by the supply of available nitrogen? ' Soil Use and Management , pp. 248-255 . , 10.1111/j.1475-2743.2002.tb00266.x en_US
dc.identifier.other PURE: 130783 en_US
dc.identifier.other dspace: 2160/3662 en_US
dc.description.abstract This paper reviews information from the literature and case studies to investigate whether productivity in organic systems is restricted by the supply of available N during the major phases of crop growth. Organic systems have the potential to supply adequate amounts of available N to meet crop demand through the incorporation of leys, N rich cash crop residues and uncomposted manures. However, this is seldom achieved because leys are only incorporated once every few years and organically produced crop residues and manures tend to have low N contents and slow mineralization rates. N availability could be improved by delaying ley incorporation until spring, applying uncomposted manures at the start of spring growth, transferring some manure applications from the ley phase to arable crops, preventing cover crops from reaching a wide C:N ratio and better matching crop type with the dynamics of N availability. en_US
dc.format.extent 8 en_US
dc.relation.ispartof Soil Use and Management en_US
dc.title Is the productivity of organic farms restricted by the supply of available nitrogen? en_US
dc.contributor.pbl Aberystwyth University en_US
dc.contributor.pbl Institute of Biological, Environmental and Rural Sciences en_US

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