We carried out trials on the commercial applications of nitrogen in different industrial structures, using phosphine-susceptible and -resistant populations three stored product beetle species, red flour beetle, Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae), rice weevil, Sitophilus oryzae (L.) Curculionidae), saw-toothed grain Oryzaephilus surinamensis Silvanidae). Twelve were conduct...

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,...

chemical insecticides have been widely employed for the control of storage grain pests. this has caused such problems as insecticide resistance along with contamination of foodstuffs with chemical residues. thus, there is a growing interest in using pathogenic control agents as alternative. in this study, the potential of beauveria bassiana (bbweevil™, a commercial product containing 2×109 coni...

The objectives of this work were to assess phosphine resistance in insect populations (Tribolium castaneum, Rhyzopertha dominica, Sitophilus zeamais and Oryzaephilus surinamensis) from different regions of Brazil and to verify if the prevailing mechanism of phosphine resistance in these populations involves reduced respiration rates. Sixteen populations of T. castaneum, 15 of R. dominica, 27 of...

The potential of a dry powder co-formulant, kaolin, to improve the control of storage beetles by the entomopathogenic fungus Beauveria bassiana, isolate IMI389521, was investigated. The response of Oryzaephilus surinamensis adults to the fungus when applied to wheat at 1 × 10(10) conidia per kg with and without kaolin at 1.74 g per kg wheat was assessed. Addition of kaolin increased control fro...

The insecticidal effect of Temprid, a formulation that contains beta-cyfluthrin and imidacloprid, was tested on concrete for control of seven stored-product insect species: the rusty grain beetle, Cryptolestes ferrugineus (Stephens); the sawtoothed grain beetle, Oryzaephilus surinamensis (L.); the red flour beetle, Tribolium castaneum (Herbst); the confused flour beetle, T. confusum Jacquelin d...

The efficacy of ozone, as an alternative fumigant to phosphine, was tested 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); sawtoothed grain beetle, Oryzaephilus surinamensis (L.); maize weevil, Sitophilus zeama...

This in vitro study evaluated the effects of crude alkaloid compounds extract plant A. majus leaves and flowers on some biological performance aspects insect. The results showed that at concentrations 10, 20 30 mg/ml significantly affected cumulative mortality different stages. concentration ( 30) had most noticeable effects, causing highest rate second fourth larval instars (86.7 73. 3 %, resp...