Frankia populations in soils under different tree species—with special emphasis on soils under Betula pendula A. Smolander OriginalPaper Pages: 1 - 10
Effects of stubble and N fertilization management on N availability and uptake under successive rice (Oryza sativa L.) crops P. E. Bacon OriginalPaper Pages: 11 - 19
Symbiotic effectiveness of strains of Rhizobium leguminosarum biovar phaseoli isolated from soils of Rwanda R. LalandeP. C. BigwanezaH. Antoun OriginalPaper Pages: 41 - 46
Selection of Rhizobium leguminosarum strains for lentil (Lens culinaris) under growth room and field conditions E. BremerC. Van KesselD. A. Rennie OriginalPaper Pages: 47 - 56
Root respiration during grain filling in sunflower: The effects of water stress A. J. HallD. J. ConnorD. M. Whitfield OriginalPaper Pages: 57 - 66
Sorghum root length density and the potential for avoiding striga parasitism O. Cherif-AriT. L. HousleyG. Ejeta OriginalPaper Pages: 67 - 72
The relative roles of N fixation, fertilizer, crop residues and soil in supplying N in multiple cropping systems in a humid, tropical upland cropping system Widjang H. SisworoM. M. MitrosuhardjoR. J. K. Myers OriginalPaper Pages: 73 - 82
Light interception as a source of variation for nitrogen fixation in groundnut genotypes J. H. WilliamsM. DuttaP. T. C. Nambiar OriginalPaper Pages: 83 - 88
Root:shoot ratios of old and modern, tall and semi-dwarf wheats in a mediterranean environment K. H. M. SiddiqueR. K. BelfordD. Tennant OriginalPaper Pages: 89 - 98
Exclusion of inefficient Bradyrhizobium japonicum serogroups by soybean genotypes G. C. WeiserH. D. SkipperA. G. Wollum II OriginalPaper Pages: 99 - 105
Organic matter contributed to soil by plant roots during the growth and decomposition of maize M. V. CheshireC. M. Mundie OriginalPaper Pages: 107 - 114
Effect of phosphorus application on transformation of zinc fraction in soil and on the zinc nutrition of lowland rice Biswapati MandalL. N. Mandal OriginalPaper Pages: 115 - 123
Soil phosphorus fractions, aluminum, and water retention as affected by microbial activity in an Ultisol D. LeeX. G. HanC. F. Jordan OriginalPaper Pages: 125 - 136
Top and root growth and nutrient absorption of Prunus avium L. at two soil pH and P levels G. H. NeilsenD. NeilsenD. Atkinson OriginalPaper Pages: 137 - 144
An improved probe for sampling soil atmospheres A. J. MoffatM. JohnstonJ. S. Wright Short Communication Pages: 145 - 147
Potential effect of land-leveling on soil fertility in a Brazilian rice soil Ricardo E. PreveD. C. Martens Short Communication Pages: 148 - 150
The effect of selenium on sulfur uptake by barley and rice R. L. MikkelsenH. F. Wan Short Communication Pages: 151 - 153
