1. Comparison of the agronomic effectiveness of a phosphate rock and triple superphosphate as phosphate fertilisers for tea (Camellia sinensis L.) on a strongly acidic Ultisol

   • A.K.N. Zoysa
   • P. Loganathan
   • M.J. Hedley

   OriginalPaper Pages: 95 - 105

2. Cropping intensity effects on upland rice yield and sustainability in West Africa

   • M. Becker
   • D.E. Johnson

   OriginalPaper Pages: 107 - 117

3. Improved water control and crop management effects on lowland rice productivity in West Africa

   • M. Becker
   • D.E. Johnson

   OriginalPaper Pages: 119 - 127

4. Fertiliser use and definition of farmer domains for impact-oriented research in the northern Guinea savanna of Nigeria

   • V.M. Manyong
   • K.O. Makinde
   • J. Diels

   OriginalPaper Pages: 129 - 141

5. Residual and annual potassic fertilization for soybeans

   • C.A. Rosolem
   • J. Nakagawa

   OriginalPaper Pages: 143 - 149

6. Effect of phosphorus application in legume cover crop rotation on subsequent maize in the savanna zone of West Africa

   • R.J. Carsky
   • B. Oyewole
   • G. Tian

   OriginalPaper Pages: 151 - 159

7. Plant-induced spatial variations in the size of methanotrophic population in dryland and flooded rice agroecosystems

   • S.K. Dubey
   • J.S. Singh

   OriginalPaper Pages: 161 - 167

8. Seasonal and spatial variations and the effects of clear-cutting in the methane absorption rates of a temperate forest soil

   • Y. Kagotani
   • E. Hamabata
   • T. Nakajima

   OriginalPaper Pages: 169 - 175

9. Effect of crop-specific field management and N fertilization on N2O emissions from a fine-loamy soil

   • R. Ruser
   • H. Flessa
   • J.C. Munch

   OriginalPaper Pages: 177 - 191

10. The effect of biological oxygen demand of cattle slurry and soil moisture on nitrous oxide emissions

    • J. Clemens
    • A. Huschka

    OriginalPaper Pages: 193 - 198