eng Oriental Scientific Publishing Company Biosciences Biotechnology Research Asia 0973-1245 2016-04-15 6 1 203 208 8103 article Naveen Sharma 1 N. K. Dubey 2 Kanika Sharma 1 Microbial Research Laboratory, Department of Botany, MLS University, Udaipur, Rajasthan (India). Centre Advance of Science, Department of Botany, Banaras Hindu University, Varanasi (India). Origanum majorana essential oil was tested for its potency as botanical pesticide to protect stored food commodities from insect infestation. The oil was found to be an effective repellent against the beetle Tribolium castenium (L.). An inverse relationship was observed with between concentration of oil and oviposition.Treatment of 1000 and 500 ppm found maximum mortality while 5 ppm concentration can be considered good against oviposition of insect T. castenium. https://www.biotech-asia.org/vol6no1/screening-of-insecticidal-activity-of-origanum-majorana-oil-against-tribolium-castenium/ Post harvest insect; oil extract; mortality; repellency; oviposition