Efficacy of certain plant oils as grain protectants against the rice weevil,Sitophilus oryzae (Coleoptera: Curculionidae) on wheat | ||||
| Egyptian Academic Journal of Biological Sciences. A, Entomology | ||||
| Article 6, Volume 5, Issue 2, August 2012, Page 49-53 PDF (268.27 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/eajbsa.2012.14791 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| Ragaa K. A. Hamed1; Salwa M. S. Ahmed2; Abeer O.B. Abotaleb2; Bahira M. ELSawaf3 | ||||
| 1Faculty of science, Entomology Department, Ain Shams University | ||||
| 2Plant Protection Research Institute, Stored Products Department, Agriculture Research Center | ||||
| 3Faculty of science, Entomology Department, Ain Shams University. | ||||
| Abstract | ||||
| The present study was carried out to evaluate the toxicities of celery, camphor and garlic oils against the rice weevil, Sitophilus oryzae adults through laboratory tests by treating wheat grains with such plant oils. Mortality increased with increasing of both concentration and exposure period. The most effective oil was camphor (LC50 = 0.84 and LC95 =2.85 ml/Kg wheat), followed by the celery oil (LC50 = 0.89 and LC95 =3.84 ml / Kg wheat) and garlic oil (LC50 =1.27 and LC95 =10.81 ml / kg). All oils at LC50's caused a significant decrease in the mean number of eggs laid by females as compared to the control and completely inhibited adult emergence. | ||||
| Keywords | ||||
| Rice weevil; Sitophilus oryzae; plant oils wheat protectants | ||||
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