The use of Laurus nobilis and Mentha pulegium essential oils against Sitophilus zeamais (Coleoptera: Curculionidae) on stored maize

Laboratory studies were carried out to evaluate the effects of some essential oils from Laurus nobilis and Mentha pulegium against Sitophilus zeamais on stored maize. The concentrated essential oils at different volumes of 0.5 µL, 1.5 µL, 2.5 µL, 5.0 µL and 10 µL, were poured on filter papers with 2...

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Bibliographic Details
Published inRevista de ciências agrárias Vol. 38; no. 2; pp. 191 - 195
Main Authors Barros, Graça, Magro, Ana, Conceição, Carlos, Matos, Olívia, Barbosa, António, Bastos, Margarida M.S.M., Mexia, António
Format Journal Article
LanguagePortuguese
Published Sociedade de Ciências Agrárias de Portugal 01.06.2015
Subjects
AGRICULTURE, MULTIDISCIPLINARY
AGRONOMY
óleos essenciais
Sitophilus zeamais
Mentha pulegium Sitophilus zeamais
inseticidas naturais
Laurus nobilis
botanical insecticides
essential oils
Mentha pulegium
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Summary:Laboratory studies were carried out to evaluate the effects of some essential oils from Laurus nobilis and Mentha pulegium against Sitophilus zeamais on stored maize. The concentrated essential oils at different volumes of 0.5 µL, 1.5 µL, 2.5 µL, 5.0 µL and 10 µL, were poured on filter papers with 2 cm Ø each. For diluted oils, the fixed volume of 15 µL of different concentrations of 1:150v/v, 1:100 v/v, 1:75 v/v, 1:50 v/v and 1:10 v/v either in methanol or n-hexane were used to impregnate the filter papers. Treatments with the concentrated oils were more effective. All the concentrations used from M. pulegium provided 100% adult mortality and no progeny production were achieved. L. nobilis has revealed 100% adult mortality at3.185 µL/cm². Regarding the treatments with diluted oils once again the oil from M. pulegium provided 100% adult mortality at concentrations of 1:50 v/v and 1:10 v/v. L. nobilis was not effective at any of the concentrations used. There were no significant differences between the solvents used.
ISSN:0871-018X