1. Fungi, bacteria and protozoa in soil from four arable cropping systems

   • J. Schnürer
   • M. Clarholm
   • T. Rosswall

   OriginalPaper Pages: 119 - 126

2. Depth of root symbiont occurrence in soil

   • R. A. Virginia
   • M. B. Jenkins
   • W. M. Jarrell

   OriginalPaper Pages: 127 - 130

3. Chemical composition of cultures and natural samples of N₂-fixing blue-green algae from rice fields

   • P. A. Roger
   • A. Tirol
   • I. Watanabe

   OriginalPaper Pages: 131 - 146

4. Potential for higher rates of denitrification in earthworm casts than in the surrounding soil

   • B. H. Svensson
   • U. Boström
   • L. Klemedtson

   OriginalPaper Pages: 147 - 149

5. Effect of continuous maize-cropping on yield, organic carbon mineralization and phosphorus supply of savannah soils in western Nigeria

   • O. J. Ayodele

   OriginalPaper Pages: 151 - 155

6. Microbial biomass and mineralization-immobilization of nitrogen in some agricultural soils

   • F. Azam
   • K. A. Malik
   • F. Hussain

   OriginalPaper Pages: 157 - 163

7. ¹⁵N studies on the transfer of legume-fixed nitrogen to associated cereals in intercropping systems

   • D. D. Patra
   • M. S. Sachdev
   • B. V. Subbiah

   OriginalPaper Pages: 165 - 171