Anais da Sociedade Entomológica do Brasil (1997) 26, 411-416

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Paulo R.V.S. Pereira, Rui S. Furiatti, Flávio A. Lazzari and Airton R. Pinto Jr (1997)
Avaliação de Inseticidas no Controle de Sitophilus oryzae (L.) (Coleoptera: Curculionidae), e Rhyzopertha dominica (Fab.) (Coleóptera: Bostrichidae) em Milho Armazenado
[Evaluation of insecticides in the control of Sitophilus oryzae (L.) (Coleoptera: Curculionidae), and Rhyzopertha dominica (Fab.) (Coleoptera: Bostrichidae) in shelled corn]
Anais da Sociedade Entomológica do Brasil 26 (3), 411-416
Abstract: The efficacy of insecticides was determined in laboratory against Sitophilus oryzae (L.) (Coleoptera: Curculionidae) and Rhyzopertha dominica (Fab.) (Coleoptera: Bostrichidae) exposed to treated shelled corn (Zea mays). Each treatment, which was composed of 1.2 kg of shelled corn, was treated with 5 ml of mixture/kg of corn using a propelling air atomizer. Fifteen days after treatment 200 g of the treated shelled corn, from each treatment, were infested with 40 adult insects of each species and this procedure was repeated every 30 days until 180 days after treatment. The number of dead insects was counted 15 days after each infestation, so the evaluations were made at 30, 60, 90, 120, 150 and 180 days after the insecticide application. After 180 days esfenvalerate + fenitrothion + piperonyl butoxide, esfenvalerate + fenitrothion and fenirothion + deltamethrin + pyperonil butoxide were effective against S. oryzae and R. dominica. Fenitrothion was effective against S. oryzae and deltamethrin + piperonyl butoxide against R. dominica. Esfenvalerate + pyperonil butoxide were, ineffective against S. oryzae and the same was observed with fenitrothion against R. dominica. The use of mixtures of organophosphorus plus pyrethroids were more effective against S. oryzae and R. dominica when compared with these insecticides used alone.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: Portuguese)
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Research topic(s) for pests/diseases/weeds:
control - general

Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.

Sitophilus oryzae Stored grain
Rhyzopertha dominica Stored grain