Effect of the air pollution component ammonium sulphate on the VAM infection rate of three heathland species B. HeijneJ. J. HofstraR. Bobbink OriginalPaper Pages: 1 - 12
Influence of Fusarium solani on citrus root rot caused by Phytophthora parasitica and Phytophthora citrophthora L. M. DandurandJ. A. Menge OriginalPaper Pages: 13 - 21
An indirect method for estimating 15N isotope fractionation during nitrogen fixation by a legume under field conditions J. A. DoughtonI. VallisP. G. Saffigna OriginalPaper Pages: 23 - 29
Nitrogen mineralization and its controlling factors in various kinds of temperate humid-zone soils S. J. González-PrietoM. C. VillarT. Carballas OriginalPaper Pages: 31 - 44
Feedback regulation of nodule formation in Hippophaë rhamnoides Svetlana V. DobritsaSvetlana N. Novik OriginalPaper Pages: 45 - 50
Nitrogenase activity of two genotypes of Acacia mangium as affected by phosphorus nutrition J. S. SunR. J. SimpsonR. Sands OriginalPaper Pages: 51 - 58
Changes in the populations of microorganisms associated with the application of soil amendments to control Sclerotium rolfsii Sacc. G. H. CanulloR. Rodriguez-KabanaJ. W. Kloepper OriginalPaper Pages: 59 - 66
Influence of soil factors and cultural practice on biological control of sheath blight of rice with antagonistic bacteria S. S. GnanamanickamB. L. CandoleT. W. Mew OriginalPaper Pages: 67 - 75
Nitrogen dynamics in humus and soil beneath Sitka spruce (Picea sitchensis (Bong.) Carr.) planted in pure stands and in mixture with Scots pine (Pinus sylvestris L.) B. L. Williams OriginalPaper Pages: 77 - 84
The role of VAM fungi in nitrogen dynamics in maize-bean intercrops Margaret Reeves OriginalPaper Pages: 85 - 92
Below-ground carbon distribution in barley (Hordeum vulgare L.) with and without nitrogen fertilization Gerd Johansson OriginalPaper Pages: 93 - 99
The partitioning of fertilizer-N between soil and crop: Comparison of ammonium and nitrate applications Sylvie RecousJ. M. MachetB. Mary OriginalPaper Pages: 101 - 111
Actinorhizal host-specificity of Chinese Frankia strains Dazhi DuDwight D. Baker OriginalPaper Pages: 113 - 116
Soil invertebrate and plant responses to mowing and carbofuran application in a North American tallgrass prairie T. C. ToddS. W. JamesT. R. Seastedt OriginalPaper Pages: 117 - 124
A comparison of 14C, 86Rb, and total excavation for determination of root distributions of individual plants D. G. MilchunasC. A. LeeD. P. Coffin OriginalPaper Pages: 125 - 132
Inoculation of commercially grown strawberry with VA mycorrhizal fungi M. NiemiM. Vestberg OriginalPaper Pages: 133 - 142
Competitive abilities of Tn5 Tox- mutants of a rhizobacterium inhibitory to wheat growth A. C. KennedyH. Bolton Jr.J. K. Fredrickson OriginalPaper Pages: 143 - 153