1. Impact of rice straw management practices on yield, nitrogen uptake and soil properties in a wheat-rice rotation in northern India

   • T. S. Verma
   • R. M. Bhagat

   OriginalPaper Pages: 97 - 106

2. Increasing urea-N efficiency for transplanted lowland rice by pneumatic injection: Yield and economics at the farm level

   • J. H. M. Scholten

   OriginalPaper Pages: 107 - 114

3. Methane production from anaerobic soil amended with rice straw and nitrogen fertilizers

   • Zhengping Wang
   • Ronald D. Delaune
   • William H. Patrick Jr.

   OriginalPaper Pages: 115 - 121

4. Leaching of nitrate, calcium and magnesium under maize cultivation on an oxisol in Togo

   • R. Poss
   • H. Saragoni

   OriginalPaper Pages: 123 - 133

5. Development and evaluation of an improved soil test for phosphorus. 2. Comparison of the Olsen and mixed cation-anion exchange resin tests for predicting the yield of ryegrass grown in pots

   • S. Saggar
   • M. J. Hedley
   • I. S. Cornforth

   OriginalPaper Pages: 135 - 144

6. Predicting plant yields using soil testing for phosphorus: Effects of error in the estimation of the maximum yield on interseasonal comparisons of yield prediction

   • M. D. A. Bolland
   • R. J. Gilkes

   OriginalPaper Pages: 145 - 153

7. The effect of clay on gypsum filterability in the nitrophosphate process

   • J. T. Tinge

   OriginalPaper Pages: 155 - 160

8. The effect of water supply on the response of subterranean clover, annual medic and wheat to superphosphate applications

   • M. D. A. Bolland

   OriginalPaper Pages: 161 - 175

9. Solar evaporation of aqueous wastes from fertilizers/ag-chemical dealerships

   • Doris H. Ash
   • David G. Salladay
   • Gerald R. Guinn

   OriginalPaper Pages: 177 - 185