1. Influence of source, time and method of application, and simulated rainfall on recovery of nitrogen fertilizers applied to bromegrass

   • S. S. Malhi

   OriginalPaper Pages: 1 - 10

2. Response of upland rice to phosphorus in an Ultisol in the humid forest zone of West Africa

   • K. L. Sahrawat
   • M. P. Jones
   • S. Diatta

   OriginalPaper Pages: 11 - 17

3. Effect of lime nitrogen on the efficiency of urea and other ammonium nitrogen fertilizers

   • He Nianzu
   • Ye Zhiqiang
   • Xiong Jinshan

   OriginalPaper Pages: 19 - 26

4. Cadmium concentration in vegetable crops grown in a sandy soil as affected by Cd levels in fertilizer and soil pH

   • G. Guttormsen
   • B. R. Singh
   • A. S. Jeng

   OriginalPaper Pages: 27 - 32

5. The effects of a nitrification inhibitor on leaching losses and recovery of mineralized nitrogen by a wheat crop after ploughing-in temporary leguminous pastures

   • G. S. Francis
   • R. J. Haynes
   • P. H. Williams

   OriginalPaper Pages: 33 - 39

6. Response of sorghum to fertilizer phosphorus and its residual value in a Vertisol

   • K. L. Sahrawat
   • T. J. Rego
   • A. Adam

   OriginalPaper Pages: 41 - 47

7. Fertility characterization of soils at six research sites in NW Cameroon

   • Charles F. Yamoah
   • M. Ngueguim
   • E. Tambi

   OriginalPaper Pages: 49 - 57

8. Use of phenylphosphorodiamidate and N-(n-butyl)thiophosphorictriamide to reduce ammonia loss and increase grain yield following application of urea to flooded rice

   • S. Phongpan
   • J. R. Freney
   • P. Chaiwanakupt

   OriginalPaper Pages: 59 - 66

9. Phosphorus supplying power of some thermally promoted reaction products of phosphate rocks

   • H. K. Rautaray
   • R. N. Dash
   • S. K. Mohanty

   OriginalPaper Pages: 67 - 75