Aqueous extracts of some medicinal plants are as toxic as Imidacloprid to the sweet potato whitefly, Bemisia tabaci

Aqueous extracts of nine plants, known to have medicinal activity, were tested for their toxicity against the sweet potato whitefly, Bemisia tabaci Genn. (Homoptera: Aleurodidae) compared to the toxicity of the insecticide, Imidacloprid. Extracts of Lepidiuim sativum L. (Brassicales: Brassicaceae) k...

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Bibliographic Details
Published inJournal of insect science (Tucson, Ariz.) Vol. 9; p. 15
Main Authors Ateyyat, Mazen A, Al-Mazra'awi, Mohammad, Abu-Rjai, Talal, Shatnawi, Mohamad A
Format Journal Article
LanguageEnglish
Published United States 2009
Subjects
Animals
Hemiptera - drug effects
Hemiptera - growth & development
Imidazoles
Insecticides
Magnoliopsida - chemistry
Neonicotinoids
Nitro Compounds
Nymph - drug effects
Plant Extracts - toxicity
Pupa - drug effects
Water - chemistry
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Summary:Aqueous extracts of nine plants, known to have medicinal activity, were tested for their toxicity against the sweet potato whitefly, Bemisia tabaci Genn. (Homoptera: Aleurodidae) compared to the toxicity of the insecticide, Imidacloprid. Extracts of Lepidiuim sativum L. (Brassicales: Brassicaceae) killed 71 % of early stage nymphs, which was not significantly different from mortality caused by Imidacloprid. Treatment of pupae with three plant extracts, L. sativum, Achillea biebersteinii L. (Asterales: Asteraceae), or Retama raetam (Forssk.) Webb and Berthel (Fabales: Fabaceae) prevented adult development, and treatment with R. raetam extract killed adults, at levels that were not significantly different from Imidacloprid. None of the other plants showed significant toxicity. However extracts of four plants, Pimpinella anisum L. (Apiales: Apiaceae), Galium longifolium (Sibth. and SM.) (Gentianales: Rubiaceae), R. raetam and Ballota undulata Bentham (Lamiales: Lamiaceae) had a repellent effect.
ISSN:1536-2442
DOI:10.1673/031.009.1501