Methods likely to reduce the glasshouse area needed for experiments with the tomato N. G. Alvey OriginalPaper Pages: 22 - 32
Efflux and retention of foliar applied phosphorus-32 and sulfur-35 by intact bean roots, and the influence of various ambient ions on this relationship Fred H. Emmert OriginalPaper Pages: 33 - 42
The influence of radioactive phosphate level on the absorption of phosphate by plants and on the determination of labile soil phosphate S. LarsenI. J. Cooke OriginalPaper Pages: 43 - 48
Studies on nitrogen-fixing bacteria of the genusBeijerinckia J. H. Becking OriginalPaper Pages: 49 - 81
A comparison of the nodulation of diploid and tetraploid varieties of red clover inoculated with different Rhizobial strains J. B. Weir Letter To The Editors Pages: 85 - 89
A simple technique for determining mineralization of carbon during incubation of soils treated with organic materials A. H. Cornfield Letter To The Editors Pages: 90 - 93
On the Rôle of toluene in the measurement of the activity of soil enzymes J. Drobník Letter To The Editors Pages: 94 - 95
Über die Zuverlässigkeit der Methoden zur Bestimmung der Aktivität von Bodenenzymen nach Ed. Hofmann Ed. HofmannGg. Hoffmann Letter To The Editors Pages: 96 - 99