1. Zinc effects on a soil bacterial flora characterized by fatty acid composition of the isolates

   • H. Ohya
   • Y. Komai
   • M. Yamaguchi

   OriginalPaper Pages: 59 - 63

2. Gaseous nitrogen losses from fertilized soil during nitrification and denitrification using the acetylene blockage technique

   • S. Casella
   • C. Leporini
   • G. Picci

   OriginalPaper Pages: 65 - 70

3. Isoelectric focusing of soil humic substances in the presence of 8M urea

   • B. Ceccanti
   • M. T. Bertolucci
   • M. Calcinai

   OriginalPaper Pages: 71 - 75

4. Nitrogen availability in some Wisconsin forests: comparisons of resin bags and on-site incubations

   • D. Binkley
   • J. Aber
   • K. Nadelhoffer

   OriginalPaper Pages: 77 - 82

5. Availability of residual fixed ammonium to crops

   • D. Saha
   • A. K. Mukhopadhyay

   OriginalPaper Pages: 83 - 86

6. Effects of prescribed fire on rates of decomposition and nitrogen mineralization in a ponderosa pine ecosystem

   • C. S. White

   OriginalPaper Pages: 87 - 95

7. Volatile and water-soluble inhibitors of nitrogen mineralization and nitrification in a ponderosa pine ecosystem

   • C. S. White

   OriginalPaper Pages: 97 - 104

8. Potency of nitrification inhibitors following their repeated application to soil

   • G. A. Rodgers

   OriginalPaper Pages: 105 - 108

9. Varietal and fertilizer effects on straw phytotoxins

   • S. H. T. Harped
   • F. B. Ellis
   • J. M. Lynch

   OriginalPaper Pages: 109 - 112

10. Nitrogen fixation in soybeans as influenced by cultivar and Rhizobium strain differences

    • C. E. Douka
    • A. E. Nychas
    • A. C. Xenoulis

    OriginalPaper Pages: 113 - 118