The efficacy of ozone was evaluated against four economically-important stored-product insect species at 27.2 C and 20.4% r.h. Adults of phosphine-susceptible laboratory strains and phosphine-resistant field strains of the red flour beetle, Tribolium castaneum (Herbst), saw-toothed grain beetle, Oryzaephilus surinamensis (Linnaeus), maize weevil, Sitophilus zeamais Motschulsky, and rice weevil,...

The studies on screening of 15 varieties wheat viz., WH 1105, 1124, 1142, 283, 542, 711, 1080, 1025, 157, DBW 17, DPW 62150, HD 2967, PBW 343, C 306 and 147 for ovipositional preference (choice no choice test), adult emergence grain damage (number weight basis both) by S. oryzae were carried out under laboratory conditions during August to October, 2017. Results revealed that the minimum ovipos...