Response of tomato to nitrogen fertilization and irrigation frequencies in a semi-arid tropical soil P. O. NwadukweV. O. Chude OriginalPaper Pages: 85 - 88
Impact on ammonia volatilization losses of mixing KCl of high pH with urea C. B. ChristiansonG. CarmonaR. G. Howard OriginalPaper Pages: 89 - 92
Dissolution of phosphate rock during the composting of poultry manure: an incubation experiment S. MahimairajaN. S. BolanM. J. Hedley OriginalPaper Pages: 93 - 104
Coupling of dry matter and nitrogen accumulation in ryegrass A. R. OvermanD. L. RobinsonS. R. Wilkinson OriginalPaper Pages: 105 - 108
Phosphate availability in calcareous Vertisols and Inceptisols in relation to fertilizer type and soil properties B. CastroJ. Torrent OriginalPaper Pages: 109 - 119
Influence of continuous cropping and fertilization on adsorption and desorption of soil phosphorus K. N. SharmaHarjit SinghA. C. Vig OriginalPaper Pages: 121 - 128
Effect of citrate and tartrate on phosphate adsorption by amorphous ferric hydroxide C. Dye OriginalPaper Pages: 129 - 134
Agricultural response functions for limited resource farmers in Sub-Saharan Africa Pierre -Justin KoukaCurtis M JollyJulio Henao OriginalPaper Pages: 135 - 141
Assessing nitrogen mineralization from soil organic matter using anion exchange membranes P. QianJ. J. Schoenau OriginalPaper Pages: 143 - 148
Human urine - Chemical composition and fertilizer use efficiency H. KirchmannS. Pettersson OriginalPaper Pages: 149 - 154
The effect of increasing application rate of granular calcium ammonium nitrate on net nitrification in a laboratory study of grassland soils C. J. WatsonD. J. KilpatrickJ. E. Cooper OriginalPaper Pages: 155 - 161