Inventaire de l’entomofaune du sésame en zone ouest du Burkina Faso

Entomofaune du sésame en zone Ouest du Burkina Faso

Abstract

Sesame production is threatened by pest attacks in Burkina Faso. But how many are they? This study aimed to inventory entomofauna associated with sesame crop in the western zone of Burkina Faso. To do this, a completely randomized Fisher design was implanted. Insects were captured daily and flowers harvested every ten days from three varieties of sesame (S42, GMP3 and MKD2). The insects captured were identified, then classified according to the phenological stage of the plant and the organ attacked. Results revealed a total of 5338 insects mainly belonging to the orders Diptera, Heteroptera, Lepidoptera and Thysanoptera. The species Aphis gossypii (Glover), Orosius albicinctus. (Distant), Nezara Viridula (Linnaeus), Asphondylia sesami (Felt), Antigastra catalaunalis (Duponchel) et Thrips tabaci (Lindeman) were listed as pests while Solenopsis geminata (Fabricius), Asilus barbarus (Linnaeus) et Syrphus ribesii (Linnaeus) were some beneficial insects observed. In addition, damages by A. catalaunalis, observed on all

sesame plant organs and throughout the plant cycle make this insect a dreadful pest. Future studies for the control of this insect are necessary to improve sesame productivity in Burkina Faso.