This work is the result of an experimental research on "Effects of pyrethrum extracts on black bean aphids (Aphis fabae) in the agro-ecological conditions of Goma, DR Congo". At the end of the experimentation, it turned out that in the results found, the most illustrative data is the mortality rate of the population recorded after treatment of the crop. In this case, treatment three (T3) caused an average mortality of 97% of the 100% of the population...