In Africa, there is a great deal of ancestral knowledge about the pesticide or antibiotic effects of local plants, but scientific research is very fragmented. Scientists from CIRAD and IRD have therefore created a website that organises the knowledge from more than 700 documents. However, they warn against the use of these plant-based solutions: plants can also be toxic. The knowledge base was called "Knomana", a contraction of knowledge management. Its objective is to gather and organize as much scientific knowledge as possible on the uses of plants with pesticide, antimicrobial, antiparasitic and antibiotic effects in Africa. To date, nearly 700 published articles have been dissected, as well as other documents such as books or scientific reports. All this data can be consulted free of charge on a website: knomana.org