Résumé
Organic Farming excludes the use of synthetic chemicals to protect plants in the field or during grain storage and questions the use of antibiotics for livestock breeding or aquaculture. One way to limit major constraints of chemicals (pests and diseases) is to use active plants parts or plants-based products, as it has been described in the literature for plant and animal health. Our current work consists in building a knowledge database from existing literature and implementing exploration methods to support the extraction of knowledge by the potential users (smallholders, advisors, extensionists, researchers, producers, etc.). In early May 2018, the knowledge base gathered data from 227 published documents, dated from 1957 to 2017. Ninety-four percent of the 33,400 uses recorded concerned sub-Saharan African countries.