Author(s):

Julielson Oliveira Ataide, Filipe Garcia Holtz, Francieli Destefani Deolindo, Andressa Huver, Hugo Bolsoni Zago, Luciano Menini, Hugo José Gonçalves Dos Santos Júnior and José Romário De Carvalho

Abstract: The Sitophilus zeamais (Motschulsky) (Coleoptera: Curculionidae), is an internal primary pest of stored grains of great economic importance. Few insecticides registered for fumigation control for S. zeamais exist, which makes it necessary to search for more control alternatives. Thus, the objective of this work was to assess acute toxicity, sublethal effect, survival and behavioral response of the major components of essential oils, Thymol, Camphora, Terpineol, Canpheno, Eucalyptol, Limonene, β Pinene and Eugenol; and the mixtures of these components on S. zeamais. The results showed that the mixtures of the major components caused acute toxicity, reduced survival time and offspring production, in addition to altering the behavioral activity of S. zeamais. The mixture Camphor + Canphene presented a synergistic effect, with LC₅₀ and LC₉₀ of 2.77 and 20.34 µl/ml, respectively. The mixtures of the major components proved to be promising products for the control of S. zeamais.

DOI: 10.22271/phyto.2020.v9.i2v.11038

Pages: 1329-1335  |  1143 Views  420 Downloads

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