Table of Contents:
  • Tropical Environments : Climates, Soils and Cropping Systems
  • N₂-fixing Organisms in the Tropics
  • The Process of N₂-fixation
  • Assessment of the Role of N2-fixation
  • Cycling of Fixed N in Tropical Cropping Systems
  • Cereal Crops and Grasses : Free-living, Root-associated and Endophytic N₂-fixing Bacteria
  • Cyanobacteria and Azolla as Green Manure for Wetland Rice
  • Grain Legumes for Food, Fodder and Soil Fertility
  • Legumes as Green Manures and Cover Crops
  • Forage Legumes in Pastures and Leys
  • Plantation Crops : Understorey Legumes and Shade Trees
  • Agroforestry : N₂-fixing Trees in Integrated Agriculture
  • Environmental Constraints to N₂-fixation
  • Approaches to Enhancing N₂-fixation
  • Future Impacts of N₂-fixation in Tropical Agriculture.