Anais da Sociedade Entomológica do Brasil (1999) 28, 549-555

José V. Oliveira and José D. Vendramim (1999)
Repelência de Óleos Essenciais e Pós Vegetais sobre Adultos de Zabrotes subfasciatus (Boh.) (Coleoptera: Bruchidae) em Sementes de Feijoeiro
[Repellency of essencial oils and powders from plants on adults of Zabrotes subfasciatus (Boh.) (Coleoptera: Bruchidae) on bean seeds]
Anais da Sociedade Entomológica do Brasil 28 (3), 549-555
Abstract: The repellent effect of essential oils and powders from plants on Zabrotes subfasciatus (Bob.) (Coleoptera: Bruchidae) was studied on bean seeds. The number of attracted insects was reduced, and the repellency percentages increased directly with the doses and concentrations of the products used. Cinnamon leaf oil (Cinnamomum zeylanicum Ness) showed repellency percentages of 63.5; 85.4, and 96.2% at 0.5; 2.5, and 5.0 ml/kg of seeds, respectively; the repellency percentages of neem seed oil (Azadirachta indica A. Juss) were 29.6; 76.7, and 89.4%, respectively at the same doses. At 0.5 and 2.5 ml/kg, the repellency percentages of laurel leaf oil (Laurus nobilis L.) were 62.0 and 74.6, respectively. The powders were less repellent than the oils, except for laurel leaf powder at 2.5 and 5.0% with 93.7 and 92.9% of repellency, respectively, followed by cinnamon (51.0; 62.3%), and black peper, Piper nigrum L., (35.9; 45.4). The results showed that the cinnamon, laurel, and neem oils, as well as the laurel leaf powder are promising products for alternative control of Z. subfasciatus in stored bean.
(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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Database assignments for author(s): José Djair Vendramim

Research topic(s) for pests/diseases/weeds:
control - general

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Zabrotes subfasciatus	Stored legumes