Frequency distributions and spatially dependent variability of ammonium and nitrate concentrations in soil under grazed and ungrazed grassland RE WhiteRosalyn A HaighJh Macduff OriginalPaper Pages: 193 - 208
Comparison of zinc soil tests adjusted for soil and fertilizer phosphorus Chao ShangThomas E Bates OriginalPaper Pages: 209 - 220
Effect of soil bulk density on hydrolysis of surface-applied urea in unsaturated soils NK SavantAF JamesGH McClellan OriginalPaper Pages: 221 - 229
Effect of amounts and sequence of additions of urea and water on hydrolysis of surface-applied granular urea in unsaturated soils Nk SavantAf JamesGh McClellan OriginalPaper Pages: 231 - 243
A mathematical model of plant growth with particular reference to winter wheat S. P. S. Andrew OriginalPaper Pages: 245 - 266
A mathematical model of root exploration and of grain fill with particular reference to winter wheat S. P. S. Andrew OriginalPaper Pages: 267 - 281