Africa — how much fertilizer needed: Case study of Sierra Leone Edward R. Rhodes OriginalPaper Pages: 101 - 118
Effects of nitrogen on growth, and nitrogen and phosphorus uptake in tops and roots of sorghum grown in an Alfisol and a Vertisol K. L. Sahrawat OriginalPaper Pages: 119 - 124
Growth and yield responses of dryland grain sorghum to nitrogen and phosphorus fertilization in a ferruginous tropical soil (Haplustalf) V. B. Ogunlela OriginalPaper Pages: 125 - 135
Interaction of ammonium and nitrate nutrition with potassium in wheat A. ShavivJ. Hagin OriginalPaper Pages: 137 - 146
Effect of time of application on the effectiveness of zinc sulphate and zinc oxide as sources of zinc for wheat B. D. SharmaYadvinder-SinghBijay-Singh OriginalPaper Pages: 147 - 151
Fertilizer requirement of rice-wheat and maize-wheat rotations on coarse-textured soils amended with farmyard manure M. S. MaskinaBijay-SinghO. P. Meelu OriginalPaper Pages: 153 - 164
Fertiliser effectiveness of acid extracted phosphorus from low grade phosphate rock R. C. DalalJ. M. OadesD. G. Lewis OriginalPaper Pages: 165 - 176
Control of nitrification rate by increasing ammonium concentration A. Shaviv OriginalPaper Pages: 177 - 188
Growth, yield components and micronutrient nutrition of field-grown maize (Zea mays L.) as affected by nitrogen fertilization and plant density V. B. OgunlelaG. M. AmoruwaO. O. Ologunde OriginalPaper Pages: 189 - 196
