1. Dynamics of ¹⁵N-labeled ammonium sulfate in various inorganic and organic soil fractions of wetland rice soils

   • H. F. Schnier
   • S. K. De Dattal
   • K. Mengel

   OriginalPaper Pages: 171 - 177

2. Characterization of a metalloproteinase component extracted from soil

   • K. Hayano
   • M. Takeuchi
   • E. Ichishima

   OriginalPaper Pages: 179 - 183

3. Ammonia volatilization from nitrogen fertilizers surface-applied to corn (Zea mays) and grass pasture (Dactylis glomerata)

   • S. L. Oberle
   • L. G. Bundy

   OriginalPaper Pages: 185 - 192

4. Variable effectivity of three vesicular-arbuscular mycorrhizal endophytes in Hedysarum coronarium and Medicago sativa

   • L. Lioi
   • M. Giovannetti

   OriginalPaper Pages: 193 - 197

5. Decomposition of wheat and barley straw treated with urea-sulfuric acid

   • J. H. Smith
   • T. L. Jackson

   OriginalPaper Pages: 199 - 203

6. Active methanotrophs suppress nitrification in a humisol

   • S. R. Megmw
   • R. Knowles

   OriginalPaper Pages: 205 - 212