Biophysical and socioeconomic constraints to integrated soil fertility management (ISFM) identified and knowledge on soil processes improved: Output 1

africa colombia deficiencias del suelo entorno socioeconómico feed legumes fertilidad del suelo fijación del nitrógeno grain legumes legumes leguminosas leguminosas de grano leguminosas forrajeras manejo del suelo nitrogen fixation rhizobium socioeconomic environment soil deficiencies soil fertility soil management soil reclamation plants tropical zones zona tropical