OMAR, E., HASHEM, M., ISMAIL, I. (1995). EFFECT OF CARBON DIOXIDE IN AIR ON DIFFERENT STAGES OF THE RICE WEEVIL SITOPHILUS ORYZAE (L.) (CURCULIONIDAE: COLEOPTERA). Egyptian Journal of Agricultural Research, 73(1), 119-126. doi: 10.21608/ejar.1995.433186
ESAM E. OMAR; MOHAMED Y. HASHEM; ISMAIL I. ISMAIL. "EFFECT OF CARBON DIOXIDE IN AIR ON DIFFERENT STAGES OF THE RICE WEEVIL SITOPHILUS ORYZAE (L.) (CURCULIONIDAE: COLEOPTERA)". Egyptian Journal of Agricultural Research, 73, 1, 1995, 119-126. doi: 10.21608/ejar.1995.433186
OMAR, E., HASHEM, M., ISMAIL, I. (1995). 'EFFECT OF CARBON DIOXIDE IN AIR ON DIFFERENT STAGES OF THE RICE WEEVIL SITOPHILUS ORYZAE (L.) (CURCULIONIDAE: COLEOPTERA)', Egyptian Journal of Agricultural Research, 73(1), pp. 119-126. doi: 10.21608/ejar.1995.433186
OMAR, E., HASHEM, M., ISMAIL, I. EFFECT OF CARBON DIOXIDE IN AIR ON DIFFERENT STAGES OF THE RICE WEEVIL SITOPHILUS ORYZAE (L.) (CURCULIONIDAE: COLEOPTERA). Egyptian Journal of Agricultural Research, 1995; 73(1): 119-126. doi: 10.21608/ejar.1995.433186
EFFECT OF CARBON DIOXIDE IN AIR ON DIFFERENT STAGES OF THE RICE WEEVIL SITOPHILUS ORYZAE (L.) (CURCULIONIDAE: COLEOPTERA)
1Plant Protection Research Institute, Agriculture Research Centre, Dokki, Giza, Egypt
2Department of Economic Entomology and Pesticides, Faculty of Agriculture, Cairo University, Giza, Egypt
Abstract
The rice weevil Sitophilus oryzae (L.) was exposed to CO2 concentrations of 15%, 30%, 45%, 55%, 65% and 75% in air at 25°C and 70% R.H. Eggs, larvae, pupae and adults showed different susceptibilities. 75% CO2 in air had produced 100% mortality for both adult and developmental stages after 4 days from exposure. The larvae were the most susceptible stage, while pupae were the most tolerant. Eggs and adults were more susceptible compared with the pupal stage.
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