Aggregation studied by laser diffraction in relation to plowing, soil organic matter, and lime in the Brazilian cerrados
Farmers` independent experimentation with green manure and/or cover crops: a component of participatory research for improving Ugandan farming systems
Designing sustainable, commercial, farmer seed production systems in Africa: case studies from Uganda
Developing a natural resource management technology for a specific agroenvironment: Mucuna-maize rotation on the hillsides of northern Honduras
Sistemas mejorados arroz-pasturas para sabana nativa y pasturas degradadas en suelos ácidos de América del Sur
Introduction: toward a new institutional model of farmer participation in research on natural resource management and germplasm improvement