We examined the rate of development of two strains (one from Sharqia Governorate and the other from Qena Governorate) treated with challenger/silica nanoparticle formulation within a range of temperatures (15 to 45 °C). The developmental period and thermal requirements (DD) of O. nubilalis at four constant temperatures (15, 25, 35, and 45 °C) were significantly different between each other. The developmental rate of both strains increased significantly with the increase of temperature. The estimated life table for both treated populations from different two localities predicted their population dynamics.
