Dissolution of phosphate rocks in soils. 1. Evaluation of extraction methods for the measurement of phosphate rock dissolution N. S BolanM. J. Hedley OriginalPaper Pages: 65 - 75
A model for the release of sulfur from elemental S and superphosphate Malcolm R. McCaskillGraeme J. Blair OriginalPaper Pages: 77 - 84
Modified techniques for preparing paper strips for the new Pi soil test for phosphorus R. G. MenonS. H. ChienJ. Henao OriginalPaper Pages: 85 - 91
Solubility and agronomic effectiveness of partially acidulated phosphate rocks as influenced by their iron and aluminium oxide content L. L. HammondS. H. ChienA. U. Mokwunye OriginalPaper Pages: 93 - 98
Growth and yield of rice as affected by spacing, time and depth of placement of urea briquettes Surendra SinghRajendra PrasadS. N. Sharma OriginalPaper Pages: 99 - 101
Phosphate fixing capacity of soils: A survey, using the isotopic exchange technique, or soils from north-eastern France J. L. MorelJ. C. FardeauA. Guckert OriginalPaper Pages: 103 - 111
Relative ammonia loss from urea-based fertilizers applied to rice under different hydrological situations S. K. PatelD. PandaS. K. Mohanty OriginalPaper Pages: 113 - 119
A semi-descriptive model for predicting residual-P from fertilizer P applications G. S. SaroaC. R. Biswas OriginalPaper Pages: 121 - 126