Fertilizer determination for yield and quality improvement of vegetable crops by mathematical optimization techniques W. -L. ZhangH. KolbeH. Severin OriginalPaper Pages: 95 - 105
Agronomic effectiveness of Phosphal-34 on flooded rice in acid soils P. DuangpatraP. PrabhuddhamC. Suwannarat OriginalPaper Pages: 107 - 110
Incorporation of urea for transplanted rice as affected by floodwater and growing season Tran Thuc SonR. J. Buresh OriginalPaper Pages: 111 - 120
Nitrogen availability of soluble and slow release nitrogen fertilizers as assessed by electroultrafiltration A. VallejoM. C. CartagenaJ. A. Diez OriginalPaper Pages: 121 - 126
Major-element deficiencies inCasuarina equisetifolia R. B. WalkerP. ChowdappaS. P. Gessel OriginalPaper Pages: 127 - 133
Influence of straw mulching on fertilizer nitrogen use efficiency, moisture conservation and herb and essential oil yield in Japanese mint (Mentha arvensis L.) D. D. PatraMuni RamD. V. Singh OriginalPaper Pages: 135 - 139
Assessment of the relative agronomic effectiveness of phosphate rocks under glasshouse conditions S. SaggarM. J. HedleyI. S. Cornforth OriginalPaper Pages: 141 - 151
Effect of phosphate rock sources on biological nitrogen fixation by soybean S. H. ChienG. CarmonaD. T. Hellums OriginalPaper Pages: 153 - 159
The agronomic effectiveness of reactive rock phosphate, partially acidulated rock phosphate and monocalcium phosphate in soils of different pH Vijay KumarR. J. GilkesM. D. A. Bolland OriginalPaper Pages: 161 - 171
Beneficiation of low grade carbonate-rich phosphate rocks using dilute acetic acid solution Zafar Iqbal Zafar OriginalPaper Pages: 173 - 180
Nutrition response of Norway spruce and willow to varying levels of calcium and aluminium G. R. GobranL. B. FennI. Al Windi OriginalPaper Pages: 181 - 189
