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Chilean Journal of Agricultural Research
Instituto de Investigaciones Agropecuarias, INIA
ISSN: 0718-5820
EISSN: 0718-5839
Vol. 75, No. 3, 2015, pp. 334-340
Bioline Code: cj15045
Full paper language: English
Document type: Research Article
Document available free of charge

Chilean Journal of Agricultural Research, Vol. 75, No. 3, 2015, pp. 334-340

 en Bioactivity of Peumus boldus check for this species in other resources Molina, Laurelia sempervirens check for this species in other resources (Ruiz & Pav.) Tul. and Laureliopsis philippiana check for this species in other resources (Looser) Schodde (Monimiacea) essential oils against Sitophilus zeamais Motschulsky
Herrera-Rodríguez, Carmen; Ramírez-Mendoza, Carolina; Becerra-Morales, Itzel; Silva-Aguayo, Gonzalo; Urbina-Parra, Angélica; Figueroa-Cares, Inés; Martínez-Bolaños, Luciano; Rodríguez-Maciel, J. Concepción; Lagunes-Tejeda, Angel; Pastene-Navarrete, Edgar & Bustamante-Salazar, Luis

Abstract

The maize weevil (Sitophilus zeamais Motschulsky) is one of most important pest of stored seeds worldwide, but its current control method is based on the use of synthetic insecticides, usually leading to undesirable problems such as insecticide residues on treated food, human intoxications, and insect resistance development. Therefore the search of friendly alternative methods is required. The aim of this study was to assess, under laboratory conditions, the insecticidal properties of Peumus boldus check for this species in other resources Molina, Laurelia sempervirens check for this species in other resources (Ruiz & Pav.) Tul., and Laureliopsis philippiana check for this species in other resources (Looser) Schodde essential oils against S. zeamais. The phytochemical analysis of the three essential oils showed 1,8-cineole, safrole and methyleugenol as the common components; all of them documented with insecticidal activity from essential oils from other plant species. The highest toxicity (100% mortality) of these three oils acting as a contact insecticide was observed at 24 h exposure at 4% concentration. The estimated LC50 values for P. boldus, L. sempervirens, and L. philippiana were 0.37, 1.02, and 0.28 μL g-1, respectively. Peumus boldus exhibited the highest fumigant activity with 100% adult mortality at 30 μL oil L-1 air. At ≥ 0.5% (v/w) concentration, all essential oils showed repellent activity. These three essential oils showed a promissory insecticidal activity against the maize weevil.

Keywords
Botanical insecticides; essential oils; maize weevil; stored grains

 
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