The effect of modified atmosphere with elevated levels of CO2 against Sitophilus oryzae was studied by directly exposing the S. oryzae adults to eight concentrations of CO2 viz., 10, 20, 30, 40, 50, 60, 70 and 80 per cent with five exposure periods of 1, 2, 3, 4 and 5 hours to study the adult mortality. | Effect of modified atmosphere with elevated levels of CO2 on sitophilus oryzae Linnaeus