Ovicidal activity of crude extracts of few traditional plants against Helicoverpa armigera (Hubner) (Noctuidae: Lepidoptera)

TitleOvicidal activity of crude extracts of few traditional plants against Helicoverpa armigera (Hubner) (Noctuidae: Lepidoptera)
Publication TypeJournal Article
Year of Publication2009
AuthorsMalarvannan S., Giridharan R., Sekar S., Prabavathy V.R., Nair S
JournalJournal of Biopesticides
Volume2
Start Page64
Issue1
End page71
Date Published2001
KeywordsHelicoverpa armigera, ovicidal activity, Plant extracts
Abstract

Cipadessa baccifera Miq., Melia dubia (Cav.) (Meliaceae); Clausena dentata (Rutaceae) and Dodonaea angustifolia (Sapindaceae) are common medicinal plants found in Western Ghats and are used traditionally for various purposes. The petroleum ether, chloroform, hexane, acetone and water extracts of the leaves were investigated for their ovicidal property against Helicoverpa armigera (Hubner) (Lepidoptera : Noctuidae). The different extracts of the test plants differed significantly in their efficacy. Among the four plants tested for ovicidal activity, Clausena dentata reduced the egg hatchability and proved to be highly ovicidal compared to others. Among the age of eggs, it was clear that the early stage of the eggs namely 24 h old eggs, to be highly susceptible to all the treatments.

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