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Chilean Journal of Agricultural Research
Instituto de Investigaciones Agropecuarias, INIA
ISSN: 0718-5820
EISSN: 0718-5839
Vol. 74, No. 1, 2014, pp. 41-48
Bioline Code: cj14007
Full paper language: English
Document type: Research Article
Document available free of charge

Chilean Journal of Agricultural Research, Vol. 74, No. 1, 2014, pp. 41-48

 en Repellency, toxicity, and oviposition inhibition of vegetable extracts against greenhouse whitefly Trialeurodes vaporariorum check for this species in other resources (Westwood) (Hemiptera: Aleyrodidae)
Mendoza-García, Edgar Eduardo; Ortega-Arenas, Laura Delia; Pérez-Pacheco, Rafael & Rodríguez-Hernández, Cesáreo

Abstract

In a search for sustainable options of greenhouse whitefly Trialeurodes vaporariorum check for this species in other resources (Westwood) management, the toxic and/or repellent potential of water, ethanolic, and acetonic extracts of Ambrosia artemisiifolia check for this species in other resources L. (Asteraceae), Comocladia engleriana check for this species in other resources Loes (Anacardiaceae), Piper auritum check for this species in other resources Kunth (Piperaceae), Raphanus raphanistrum check for this species in other resources L. (Brassicaceae), and Taraxacum officinale check for this species in other resources F.H. Wigg. aggr.* (Asteraceae) were evaluated. Repellency was assessed by the cylinder method (olfactometer), while toxicity and oviposition inhibition were assessed by the leaf immersion method. Acetonic extracts did not cause any repellent or insecticidal effect. In contrast, 200 mg mL-1 water and ethanolic extracts of R. raphanistrum and ethanolic extract of A. artemisiifolia had the highest repellent activity (76%, 72%, and 69%, respectively) although their activity decreased gradually over time. Ethanolic extracts of P. auritum (66%) and R. raphanistrum (56%) at 200 mg mL-1 were highlighted as being toxic, while the most effective in inhibiting oviposition were water extracts of R. raphanistrum (76.1%) and P. auritum (72.0%) and ethanolic extract of P. auritum (69.5%); however, concentrations lower than 60 mg mL-1 caused oviposition stimulation. Our results suggest that water and ethanolic extracts of R. raphanistrum and P. auritum represent a useful tool in integrated whitefly management.

Keywords
Botanical insecticides; IPM; Trialeurodes vaporariorum

 
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