Summary : The database covers the broad subject areas of conservation of natural resources and sustainable agriculture, which are represented in a diversity of themes and disciplines that include ,s oil resources: soil degradation, recovery, and fertility; deforestation; erosion; genetic resources: germplasm, gene banks, varieties, cultivars, biodiversity, production systems: agroforestry, agropastoral, and silvipastoral systems; cropping systems: rotational cropping, alley cropping, mixed cropping, associated cropping, shifting cultivation; crop protection: pest and disease control, integrated pest management, varietal resistance; environmental and socioeconomic impact of agriculture: policies, legislation, trade, technology adoption; characterization of ecosystems: classification of soils, climate, vegetation, land use; tropical crops.