Redox transformations and plant uptake of selenium resulting from root-soil interactions Michael J. BlaylockBruce R. James Research Article Pages: 1 - 12
Mineral content of leaves from trees growing on serpentine soils under contrasting rainfall regimes in Puerto Rico Ernesto MedinaElvira CuevasAriel E. Lugo Research Article Pages: 13 - 21
The effect of short term withdrawal of NaCl stress on nodulation of white clover J. Ikeda Research Article Pages: 23 - 27
Plant nutrient efficiency: A comparison of definitions and suggested improvement C. J. P. GourleyD. L. AllanM. P. Russelle Research Article Pages: 29 - 37
Phosphorus effects on root growth and development in two maize genotypes M. A. HajabbasiT. E. Schumacher Research Article Pages: 39 - 46
Genetic allelism and linkage tests of a soybean gene, Rfg1, controlling nodulation with Rhizobium fredii strain USDA 205 T. E. DevineL. D. Kuykendall Research Article Pages: 47 - 51
Phosphorus efficiency and the forms of soil phosphorus utilized by upland rice cultivars M. J. HedleyG. J. R. KirkM. B. Santos Research Article Pages: 53 - 62
Effect of carbon source on growth, nitrogenase and uptake hydrogenase activities of Frankia isolates from Casuarina sp. A. SellstedtP. A. RosbrookP. Reddell Research Article Pages: 63 - 68
Characterization of organic matter in a forest soil of coastal British Columbia by NMR and pyrolysis-field ionization mass spectrometry C. M. PrestonR. HempflingD. E. Axelson Research Article Pages: 69 - 82
Mycorrhizal infection of an Agrostis capillaris population on a copper contaminated soil W. A. J. GriffioenJ. H. IetswaartW. H. O. Ernst Research Article Pages: 83 - 89
Relationship of Pseudomonas syringae pv. tabaci races to the rhizosphere of Wisconsin-grown tobacco K. K. KnocheJ. L. ParkeR. D. Durbin Research Article Pages: 91 - 97
Patterns of short-term amino acid accumulation and loss in the root-zone of liquid-cultured forage rape (Brassica napus L.) T. ShepherdH. V. Davies Research Article Pages: 99 - 109
Effect of exogenous amino acids, glucose and citric acid on the patterns of short-term accumulation and loss of amino acids in the root-zone of sand-cultured forage rape (Brassica napus L.) T. ShepherdH. V. Davies Research Article Pages: 111 - 118
Response of vesicular-arbuscular mycorrhizas of maize to various rates of P addition to different rooting zones Shen LuP. G. BraunbergerM. H. Miller Research Article Pages: 119 - 128
Root architectural responses of Betula lenta to spatially heterogeneous ammonium and nitrate R. C. CrabtreeG. M. Bernston Short Communication Pages: 129 - 134
Number of Rhizobia and delayed inoculation influence nodulation of clovers Nadia NazihR. W. Weaver Short Communication Pages: 135 - 139
Seedling root response of some Kenyan bread wheat cultivars grown in acid nutrient culture solution containing aluminum J. M. NyachiroK. G. Briggs Short Communication Pages: 141 - 144
Automated measurement of root length with a three-dimensional high-resolution scanner and image analysis A. L. SmitJ. F. C. M. SprangersJ. Groenwold Short Communication Pages: 145 - 149