PLANT AND SOIL Contents Volume 223, No. 1/2 2000 Measurement of decomposition and associated nutrient release from straw (Oryza sativa L.) of different rice varieties using a perfusion system G. Villegas-Pangga, G. Blair and R. Lefroy Potentiometric measurement of stability constants of complexes between fulvic acid carboxylate and Fe*+ S.B. Pandeya and A.K. Singh Soil microfloral and microfaunal response to Salicornia bigelovii planting density and soil residue amendment W.L. Goodfriend, M.W. Olsen and R.J. Frye Estimating crop N uptake from organic residues using a new approach to the '°N isotope dilution technique R. Hood, R. Merckx, E. Steen Jensen, D. Powison, M. Matijevic, and G. Hardarson Soil patchiness in juniper-sagebrush-grass communities of central Oregon C. Roberts and J. Allen Jones Effect of nitrogen form and phosphorus source on the growth, nutrient uptake and rhizosphere soil property of Camellia sinensis L. J. Ruan, F. Zhang and M.H. Wong Compared root system architectures in seedlings and in vitro plantlets of Hevea brasi- liensis, in the initial years of growth in the field M.P. Carron, Y. Le Roux, J. Tison, B.G. Dea, V. Caussanel, J. Clair and J. Keli A rhizolysimeter facility for studying the dynamics of crop and soil processes: descrip- tion and evaluation M. Liedgens, W. Richner, P. Stamp, A. Soldati X-ray absorption and phase contrast imaging to study the interplay between plant roots and soil structure C.J. Moran, A. Pierret and A.W. Stevenson 99-115 Growth analysis of maize field crops under phosphorus deficiency D. Plénet, S. Etchebest, A. Mollier and S. Pellerin 117-130 Root growth of cauliflower (Brassica oleracea L. botrytis) under unstressed conditions: Measurement and modelling H. Kage, M. Kochler and H. Stützel 131-145 Autotoxic potential of cucurbit crops J.Q. Yu, S.Y. Shou, Y.R. Qian, Z.J. Zhu and W.H. Hu 147-151 Leaf water characteristics and drought acclimation in sunflower genotypes P. Maury, M. Berger, F. Mojayad and C. Planchon 153-160 Nutrient status in needles of Norway spruce and Scots pine following harvesting of logging residues B.A. Olsson, H. Lundkvist and H. Staaf 161-173 Effect of the saprophytic fungus Fusarium oxysporum on arbuscular mycorrhizal col- onization and growth of plants in greenhouse and field trials S. Fracchia, I. Garcia-Romera, A. Godeas and J.A. Ocampo 175-184 Influence of gap size and soil properties on microbial biomass in a subtropical humid forest of north-east India A. Arunachalam and K. Arunachalam 185-193 improvement of nutritional site quality 13 years after single application of fertiliser N and P on regenerating cedar-hemlock cutovers on northern Vancouver Island, B.C. R.L. Bradley, B.D. Titus, C.M. Preston and J. Bennett 195-206 The effects of irrigation regimes on the water use, dry matter production and physiolo- gical responses of paddy rice J. Lu, T. Ookawa and T. Hirasawa 207-216 Physiological responses to water stress following a conditioning period in berseem clover A. lannucci, A. Rascio, M. Russo, N. Di Fonzo and P. Martiniello 217-227 Genistein preincubation of Bradyrhizobium japonicum cells improves strain competit- iveness under greenhouse, but not field conditions B. Pan and D.L. Smith 229-234 Preincubation of B. japonicum cells with genistein reduces the inhibitory effects of mineral nitrogen on soybean nodulation and nitrogen fixation under field conditions B. Pan and D.L. Smith 235-242 Copper uptake and translocation in chicory (Cichorium intybus L. cv Grasslands Puna) and tomato (Lycopersicon esculentum Mill. cv Rondy) plants grown in NFT system. Il. The role of nicotianamine and histidine in xylem sap copper transport M.T. Liao, M.J. Hedley, D.J. Woolley, R.R Brooks and M.A. Nichols 243-252 Root dynamics in a semi-natural grassland in relation to atmospheric carbon dioxide enrichment, soil water and shoot biomass E. Sindhoj, A.-C. Hansson, O. Andren, T. Katterer, M. Marissink and R. Pettersson 253-263 Effects of N-deposition on ion trapping by B-horizons of Danish heathlands K.E. Nielsen, B. Hansen, U.L. Ladekarl and P. Nornberg 265-276 An assessment of the relative effects of adverse physical and chemical properties of sodic soil on the growth and yield of wheat (Triticum aestivum L.) D. Wright and |. Rajper 277-285 Author index 287