Foreword 7; Keynote presentations 13; Soil biology and the emergence of adventive grassland ecosystems 15; T.R. Seastedt; Chemical components and effects on soil quality in temperate grazed pasture systems 25; M.H. Beare, D. Curtin, S. Thomas, P.M. Fraser and G.S. Francis; Physical constraints in grassland ecosystems 37; I.M. Young, K. Ritz, C.S. Sturrock and R. Heck; Integrating below-ground ecology into sustainable grassland management 45; R.D. Bardgett; Section 1; Soil biology and nutrient turnover 53; Benomyl effects on plant productivity through arbuscular mycorrhiza restriction in a Greek upland grassland 55; M. Orfanoudakis, A.P. Mamolos, F. Karanika and D.S. Veresoglou; The influence of burning on soil microbial biomass and activity along the Boro route in the Okavango delta of Botswana. 56; T. Mubyana-John and A. Banda; Estimating nitrogen fixation by pastures on a regional or continental scale 57; M. Unkovich; Cycling of N and P in grass-alone (Brachiaria) and mixed grass/legume (Brachiaria/ 58; R.M. Boddey, R.M. Tarre, R. Macedo, C. de P. Rezende, J.M. Pereira, B.J.R. Alves and S. Urquiaga; 40 years of studies on the relationships between grass species, N turnover and nutrient cycling in the Lamto reserve in the Ivory Coast (Cote d'Ivoire) 59; L. Abbadie and J.C. Lata; The addition and cessation of inorganic fertiliser amendments in long-term managed grasslands: impacts on above and below-ground communities 60; C.D. Clegg, P.J. Murray, R. Cook and T. Tallec; Grassland management practices and the diversity of soil nematode communities 61; R. Cook, P.J. Murray and K.A. Mizen; Study of characteristics of soil animals in halophilous plant communities of Leymus chinensis grasslands of northeast in China 62; X. Yin, Y. Zhang and W. Dong; How soil properties affect egg development and larval longevity of a grassland insect pest - an empirically based model 63; S.N. Johnson, X. Zhang, J.W. Crawford, P.J. Gregory, S.C. Jarvis, P.J. Murray and I.M. Young; Impact of root herbivory on grassland community structure: from landscape to microscale 64; P.J. Murray, R. Cook, L.A. Dawson, A.C. Gange, S.J. Grayston and A.M. Treonis; Analysis of the soil foodweb structure on organic- and conventional dairy farms 65; N. van Eekeren, F. Smeding and A.J. Schouten; The effect of forage legumes on mineral nitrogen content in soil 66; M. Isolahti, A. Huuskonen, M. Tuori, O. Nissinen and R. Nevalainen; Field experiments to help optimise nitrogen fixation by legumes on organic farms 67; A. Joynes, D.J. Hatch, A. Stone, S. Cuttle and G. Goodlass; Effects of applied quantity of phosphorus fertiliser on phosphorus content in plant tissues of lucerne (Medicago sativa) and seed yield in North-western China 68; Y.W. Wang, J.G. Han, S.M. Fu and Y. Zhong; Cool-season grass response to increasing nitrogen fertiliser rates in Michigan 69; R.H. Leep, T.S. Dietz and D.H. Min; Within resting period seasonal soluble carbohydrate profiles of rotationally grazed elephant grass 70; L.P. Passos, M.C. Vidigal, I.G. Perry, F. Deresz and F.B. de Sousa. The role of grass tussocks in maintaining soil condition in north east Australia 71; B.K. Northup and J.R. Brown; Effect of a grazing intensity gradient on primary production and soil nitrogen mineralisation in a humid grassland of western France 72; N. Rossignol, A. Bonis and J-B. Bouzille; Diet effects on dairy manure nitrogen excretion and cycling 73; J.M. Powell and T.H. Misselbrook; How will removal of the non-organic feed derogation affect nutrient budgets of organic livestock farms in Wales? 74; H. McCalman and S.P. Cuttle; Section 2: Chemical controls over soil quality and nutrient turnover 75; The effect of a reduction in phosphate application on soil phosphate pools 77; C. van der Salm, J. van Middelkoop and P.A.I. Ehlert; Changes in nutrient turnover and supply during the reversion of arable land to acid grassland/Calluna heathland 78; A. Bhogal, B.J. Chambers, R. Pywell and K. Walker; Study of dairy manure N cycling in soil-plant continuum using 15N and other methods 79; J.M. Powell, P.R. Cusick and K.A. Kelling; Nitrogen leaching from cattle, sheep and deer grazed pastures in New Zealand 80; K. Betteridge, S.F. Ledgard, C.J. Hoogendoorn, M.G. Lambert, Z.A. Park, D.A. Costall and P.W. Theobald; Effect of soil chemistry on microbial biodiversity and functionality in grassland and tilled soils 81; C. Carrigg, S. Kavanagh, D. Fay and V. O' Flaherty; Effect of different carbon and nitrogen inputs on soil chemical and biochemical properties in maize-based forage systems in Northern Italy 82; S. Monaco, D. Hatch, L. Dixon, C. Grignani, D. Sacco and L. Zavattaro; Seasonal changes in the ratio of microbial biomass P to total P in soils of grazed pastures 83; M. Kaneko, Y. Kurokawa, H. Tanaka and S. Suzuki; Nitrogen mineralisation in situ and in controlled environment 84; F. Palmason; N-mineralisation and phosphorous: important elements in decision support for grassland systems 85; A.L. Nielsen and C.C. Hoffmann; Implications for N transformations in acidic soils of replacing annual-based legume pastures with lucerne-based pasture in dryland farming systems of southern Australia 86; I.R.P. Fillery; Characterisation of soil organic matter from Pensacola bahiagrass pastures grazed for four years at different management intensities 87; J.C.B. Duheux, Jr., L.E. Sollenberger, N.B. Comerford, A.C. Ruggieri and K.M. Portier; Organic matter transformation processes of soils in native steppe grass communities 88; E. Forro; Study of soil characteristics to estimate sulphur supply for plant growth 89; M. Mathot, R. Lambert, B. Toussaint and A. Peeters; Total sulphur content and N:S ratio as indicators for S deficiency in grasses 90; M. Mathot, R. Lambert, B. Toussaint and A. Peeters; Supplementation of cattle with rock phosphate and urea treated straw to improve manure quality and crop yields in the Sahel zone of Senegal 91; M. Cisse, M. N'Diaye and C.M. N'Dione; Nitrogen response of spring and winter wheat to biosolids compared to chemical fertiliser 92; W. Kato, O.T. Carton, D. McGrath, H. Tunney, W.E. Murphy and P. O'Toole; Improving nutrient supply of grassland soil 93; G. Fuleky and M. Orban. Section 3: Physical constraints to soil formation 95; Assessment of nitrogen nutrition status of grasses under water deficit and recovery 97; V.G. Dugo, J-L. Durand and F. Gastal; Denitrification under pastures on permeable soils helps protect ground water quality 98; M.P. Russelle, B.A. Browne, N.B. Turyk and B. Pearson; Phosphorus transfer to river water from grassland catchments in Ireland 99; H. Tunney, P. Jordan G. Kiely, R. Moles, G. Morgan, P. Byrne, W. Menary and K. Daly; Maximising slurry crop available nitrogen utilisation in grassland systems 100; J.R. Williams, E. Sagoo, B.J. Chambers, J. Laws and D.R. Chadwick; Fire and nutrient cycling in shortgrass steppe of the southern Great Plains, USA 101; P.L. Ford and C.S. White; Soil aggregate dynamics, particulate organic matter and phosphate under dryland and irrigated pasture 102; J.T. Scott, L.M. Condron and R.W. McDowell; Fine colloids 'carry' diffuse water contaminants from grasslands 103; P.M. Haygarth and A.L. Heathwaite; Leaching losses of N, P and K from grazed legume based swards: some preliminary results 104; E.R. Dixon, A.C. Stone, D. Scholefield and D.J. Hatch; Nitrogen dynamics following the break-up of grassland on three different sandy soils 105; M. Kayser, K. Seidel and J. Muller; Mechanical aeration and liquid dairy manure: application impacts on grassland runoff water quality and yield 106; T.J. Basden, S.B. Shah and J.L. Miller; Management options to reduce N-losses from ploughed grass-clover 107; J. de Wit, G.J. van der Burgt and N. van Eekeren; Rangeland ecological management counter-measures study of Xinjiang 108; H.X. Cui, J. Li, S. Asiya, J.L. Zhang and Jialin; Green Dairy, a project for environmental friendly and sustainable dairy systems in the Atlantic area 109; H. Chambaut, A. Pflimlin and C. Raison; SAFE - a tool for assessing the sustainability of agricultural systems: an illustration 110; X. Sauvenier, C. Bielders, M. Hermy, E. Mathijs, B. Muys, J. Valckx, N. Van Cauwenbergh, M. Vanclooster, E. Wauters and A. Peeters; SAFE - a tool for assessing the sustainability of agricultural systems: methodology 111; X. Sauvenier, C. Bielders, M. Hermy, E. Mathijs, B. Muys, J. Valckx, N. Van Cauwenbergh, M. Vanclooster, E. Wauters and A. Peeters; Keyword index 113; Author index 115.