Assess the effectiveness of some plant powders in the fight against adult Sitophilus oryzae L. (Coleoptera: Curculionidae)

Abstract

This study aimed to the possibility of finding an effective device to protect grain storehouses from the infection by the Sitophilus oryzae through testing the vital influence of mint leaves powder Mentha spicata, Nerium oleander, Nicotiana tabacum, Zingiber officinale, and seed powder Trigonella foenum. in exterminating and repellent the insect through many concentration (1%, 3%, 5% ). The results revealed that the N.tabacum leaves powder has a high effectiveness , and the highest extermination rate reached 66.07%  at a concentration of 5%. And after 20 days of treatment the N.oleander leaves powder reached its lowest rate of extermination 33.93% at a concentration of 5%. And with using of the insect attractant and repellent effect the study revealed that M.spicata leaves powder has an effective repellent influence, and its highest repellent rate reached -73.33% at a concentration of 5% and after 9 hours of treatment it revealed that Z.officinale powder had an insect attractant effect and its lowest attractant rate reached 13.33% at a concentration of 5%. This increasing of time and concentration had an explicit influence on the S.oryzae repellent and extermination rates. And the results indicate the possibility of using the botanical powder in the controlling, as an alternatives of chemical insecticides