Irradiation quarantine treatment for control of Sitophilus oryzae (Coleoptera: Curculionidae) in rice

► Irradiation is a control option for stored product insects. ► Rice weevil is the most serious pest of stored rice worldwide. ► Adult and immature weevils were treated at 0, 30, 60, 90 or 120 Gy in rice. ► Radiation treatment at 120 Gy sterilized rice weevil and prevented further damage. ► Irradiation can prevent the spread of phosphine-resistant weevils in exported grain.