Producing on-farm fertilizers based on local organic residues is an empowering action for family farmers. For this reason, we conducted the project “Development of alternative fertilizers to support the agroecological management of family-based agriculture production systems in Goiás, Midwest Brazil”, from June 2014 to May 2017, aimed at developing and validating on-farm organic fertilizers in order to (1) help farmers to produce their own organic fertilizer by recycling local residues, and, by using these fertilizers, to (2) improve soil quality at low cost.