1. Ammonium bicarbonate used as a nitrogen fertilizer in China

   • Ching-Kwei Li
   • Rong-Yen Chen

   OriginalPaper Pages: 125 - 136

2. Agriculture and energy with special reference to mineral fertilization

   • S. Jürgens-Gschwind

   OriginalPaper Pages: 137 - 155

3. Fertilizer-nitrogen: Effects on dairy cow health and performance

   • N. B. Coombe
   • A. E. M. Hood

   OriginalPaper Pages: 157 - 176

4. Effects of rate and timing of nitrogen dressings on grain yield formation of winter wheat (T. aestivum L.)

   • J. Ellen
   • J. H. J. Spiertz

   OriginalPaper Pages: 177 - 190

5. Urease activity and inhibition in flooded soil systems

   • P. L. G. Vlek
   • J. M. Stumpe
   • B. H. Byrnes

   OriginalPaper Pages: 191 - 202