Physical conditions of propagation media and their influence on the rooting of cuttings Hans R. Gislerød OriginalPaper Pages: 1 - 14
Field studies on gaseous nitrogen losses from soils under continuous wheat versus a wheat-fallow rotation M. S. AulakhD. A. RennieE. A. Paul OriginalPaper Pages: 15 - 27
Lettuce tipburn as related to the cation contents of different plant parts C. SonneveldE. Mook OriginalPaper Pages: 29 - 40
Chemical properties of soil and water-stable aggregates after sixty-seven years of cropping to spring wheat J. F. Dormaar OriginalPaper Pages: 51 - 61
Effect of pH on molecular weight and size of fulvic acids in drainage water from peaty grassland in NW Netherlands H. De HaanG. WerlemarkT. De Boer OriginalPaper Pages: 63 - 73
Effects of high concentrations of sodium chloride and polyethylene glycol on the growth and ion absorption in plants T. KawasakiT. AkibaM. Moritsugu OriginalPaper Pages: 75 - 85
Effects of high concentrations of sodium chloride and polyethylene glycol on the growth and ion absorption in plants T. KawasakiG. ShimizuM. Moritsugu OriginalPaper Pages: 87 - 93
The determination of soil chitinase activity: Conditions for assay and ecological studies R. Rodriguez-KabanaG. GodoyR. A. Shelby OriginalPaper Pages: 95 - 106
The influence of stress treatments on the microbial biomass and the rate of decomposition of humified matter in soils containing different amoutns of clay L. H. Sørensen OriginalPaper Pages: 107 - 119
Size and persistence of the microbial biomass formed during the humification of glucose, hemicellulose, cellulose, and straw in soils containing different amounts of clay L. H. Sørensen OriginalPaper Pages: 121 - 130
The relative efficiency of nitrogen fixation in pea root nodules R. O. D. DixonE. A. G. Blunden OriginalPaper Pages: 131 - 138
Ecological studies of soil organisms with references to the decomposition of pine needles K. SomaT. Saitô OriginalPaper Pages: 139 - 151