Seasonal, annual, and treatment-induced variation in available nitrogen pools and nitrogen-cycling processes in soils of two Douglas-fir stands C. S. WhiteJ. R. GoszD. I. Moore OriginalPaper Pages: 93 - 99
Effects of trifluralin and metabolites on the decomposition of selected substrates by soil microorganisms K. D. BoyetteT. B. MoormanW. C. Koskinen OriginalPaper Pages: 100 - 105
Relationships between soil moisture content and nitrous oxide production during nitrification and denitrification L. KlemedtssonB. H. SvenssonT. Rosswall OriginalPaper Pages: 106 - 111
A method of selective inhibition to distinguish between nitrification and denitrification as sources of nitrous oxide in soil L. KlemedtssonB. H. SvenssonT. Rosswall OriginalPaper Pages: 112 - 119
Spore production by the vesicular-arbuscular mycorrhizal fungus Glomus monosporum as related to host species, root colonization and plant growth enhancement Manuela GiovannettiA. SchubertLoredana Salutini OriginalPaper Pages: 120 - 124
The simultaneous determination of muramic acid and glucosamine in soil by high-performance liquid chromatography with precolumn fluorescence derivatization Laszlo Zelles OriginalPaper Pages: 125 - 130
Influence of light and pH on growth and nitrogenase activity on temperate-grown Azolla A. MorettiG. Siniscalco Gigliano OriginalPaper Pages: 131 - 136
Root-temperature effects on competition for nodule occupancy between two Rhizobium meliloti strains W. A. RiceP. E. Olsen OriginalPaper Pages: 137 - 140
Nitrogen mineralization and water-table height in oligotrophic deep peat B. L. WilliamsR. E. Wheatley OriginalPaper Pages: 141 - 147
Effects of sodium selenite on microbial activity of mull, moder and mor soils B. -M. Wilke OriginalPaper Pages: 148 - 152
Effects of lime and phosphate additions on changes in enzyme activities, microbial biomass and levels of extractable nitrogen, sulphur and phosphorus in an acid soil R. J. HaynesR. S. Swift OriginalPaper Pages: 153 - 158
Influence of long-term residue management on soil enzyme activities in relation to soil chemical properties of a wheat-fallow system R. P. DickP. E. RasmussenE. A. Kerle OriginalPaper Pages: 159 - 164
Effects of Rhizobium and vesicular-arbuscular mycorrhiza inoculations on nodulation, symbiotic nitrogen fixation and soybean yield in subtropical-tropical fields C. C. YoungT. C. JuangC. C. Chao OriginalPaper Pages: 165 - 169
Effect of inoculation with Azotobacter chroococcum on nitrogenase activity of Zea mays roots grown in agricultural soils under aseptic and non-sterile conditions M. V. Martinez ToledoJ. Gonzalez-LopezA. Ramos-Cormenzana OriginalPaper Pages: 170 - 173
Field performance of three Bradyrhizobium japonicum strains with two soybean (Glycine max. L.) cultivars H. MoawadS. M. S. Badr El-DinM. A. Khalafallah OriginalPaper Pages: 174 - 177
Effects of some Nigerian Bradyrhizobium inoculants on the performance of three cowpea cultivars (Vigna unguiculata) in two field plots J. K. OlokeO. Odeyemi OriginalPaper Pages: 178 - 182
Effect of organic manures, crop residues and green manure (Sesbania aculeata) on nitrogen and phosphorus transformations in a sandy loam at field capacity and under waterlogged conditions Yadvinder SinghBijay SinghO. P. Meelu OriginalPaper Pages: 183 - 187
Effect of bulk density and soil water tension on denitrification in the rhizosphere of spring wheat (Piticum vulgare) R. WollersheimG. TrolldenierH. Beringer Erratum Pages: 188 - 188
