Bioactivity of Pelargonium graveolens essential oil and related monoterpenoids against sweet potato whitefly, Bemisia tabaci biotype B

The sweet potato whitefly, Bemisia tabaci Gennadius biotype B (Hemiptera: Aleyrodidae), causes high economic losses in vegetables, beans, soybeans, peanuts, cotton, and several ornamental plants. Repeated spray applications of synthetic pesticides has led B. tabaci to develop resistance to numerous...

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Bibliographic Details
Published in:Journal of pest science 2015-03, Vol.88 (1), p.191-199
Main Authors: Baldin, Edson L. L., Aguiar, Gabriela P., Fanela, Thiago L. M., Soares, Muriel C. E., Groppo, Milton, Crotti, Antônio E. M.
Format: Article
Language:English
Subjects:
Adults
Agriculture
Aleyrodidae
Beans
Bemisia tabaci
Biocompatibility
Biological activity
Biomedical and Life Sciences
Citronellol
Cotton
Ecology
Economic impact
Entomology
Essential oils
Forestry
Fumigation
Insecticide resistance
Insecticides
Life Sciences
Linalool
Monoterpenes
Monoterpenoids
Natural products
Nuts
Oils & fats
Organic chemistry
Original Paper
Ornamental plants
Peanuts
Pelargonium graveolens
Pest resistance
Pesticides
Plant Pathology
Plant Sciences
Plants (botany)
Potatoes
Soybeans
Sweet potatoes
Tomatoes
Toxicity
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Summary:The sweet potato whitefly, Bemisia tabaci Gennadius biotype B (Hemiptera: Aleyrodidae), causes high economic losses in vegetables, beans, soybeans, peanuts, cotton, and several ornamental plants. Repeated spray applications of synthetic pesticides has led B. tabaci to develop resistance to numerous conventional insecticides, besides polluting the environment. In this work, we investigated the bioactivity of the essential oil of Pelargonium graveolens L’Her (Geraniaceae) (PG-EO) and some related monoterpenes against the sweet potato whitefly Bemisia tabaci Gennadius biotype B (Homoptera: Aleyrodidae) in tomato. This oil significantly reduced the number of B. tabaci adults on tomato leaflets. The deterrence experiments showed similar results for PG-EO, geraniol, and citronellol; however, citronellol was more effective than PG-EO. In fumigation tests, the essential oil of P. graveolens caused 100 % mortality of adults of B. tabaci biotype B at concentrations from 0.5 μL L −1 in air. The vapor toxicity of geraniol, linalool, and citronellol, the main chemical constituents of the essential oil of P. graveolens (PG-EO), was similar to that of PG-EO. These results suggest that PG-EO and its related monoterpenes are potentially applicable to develop effective natural product-based pest-management compounds.
ISSN:1612-4758
1612-4766
DOI:10.1007/s10340-014-0580-8