Time and mode of nitrogen fertilizer application to tropical wetland rice ET CraswellSK De DattaM Hartantyo OriginalPaper Pages: 247 - 259
The transformations and balance of nitrogen in Japanese paddy fields Takeo Koyama OriginalPaper Pages: 261 - 278
Leucaena (Leucaena leucocephala (Lam) de Wit) prunings as nitrogen source for maize (Zea mays L.) BT KangL SipkensD Nangju OriginalPaper Pages: 279 - 287
Trace element addition to soil by application of NPK fertilizers N SenesiM Polemio OriginalPaper Pages: 289 - 302
Effect of intensive cropping and fertilizer use on the crop removal of sulphur and zinc and their availability in soil A Subba RaoAB Ghosh OriginalPaper Pages: 303 - 308
Very high applications of nitrogen fertilizer on grassland and residual effects in the following season WH PrinsGJG RauwJ Postmus OriginalPaper Pages: 309 - 327