Journal
REVISTA DE LA SOCIEDAD ENTOMOLOGICA ARGENTINA
Volume 80, Issue 1, Pages 33-39Publisher
SOC ENTOMOLOGICA ARGENTINA
DOI: 10.25085/rsea.800104
Keywords
Bioassay; Biopesticide; Essential oil; Pest control
Categories
Funding
- National Council of Science and Technology (CONACYT) of Mexico
- Scientific and Technological Research Support Program (PAICYT) of the Autonomous University of Nuevo Leon [CT 570-18]
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This study evaluated the toxicity of leaf extracts of Mexican oregano, neem, Mexican mint, rue, and Persian lime against the red palm mite. The strongest acaricidal activity was observed with Mexican oregano, neem, and Mexican mint, with the potential for chemical management of this pest.
The red palm mite Raoiella indica Hirst has recently invaded the Neotropical region, which demands the implementation of pest management strategies. In this study, toxicity of leaf extracts of Mexican oregano Lippia berlandieri Schauer, neem Azadirachta indica A. Juss, Mexican mint Plectranthus amboinicus (Lour.) Spreng., rue Ruta graveolens L. and Persian lime Citrus x latifolia Tanaka against R. indica was evaluated under laboratory conditions. Raoiella indica females were exposed to each plant extract at concentrations of 0.25, 0.50, 0.75 and 1% (v/v) to assess the cumulative mortality at 24, 48 and 72 h after exposure. Mortality rates of R. indica rose due to increased extract concentration and exposure time. The strongest acaricidal activity was observed with L. berlandieri, A. indica and P amboinicus, whose 1% concentration and 72 h exposure caused a mean R. indica mortality of 100, 90 and 78%, respectively. These plant extracts hold promise for the chemical management of this pest.
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