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VOL. 9, ISSUE 4 (2024)
Evaluation of antifeedant activity of Calotropis Gigantea extracts against Spodoptera litura
Authors
Swati Tanaji Lawand, Vaishali Sangram Shewale
Abstract
Calotropis gigantea
(Erukku), a prevalent tropical and subtropical waste land weed in Asia,
possesses various poisonous elements that naturally defend crops against pest
infestations. The challenge posed by Spodoptera litura, a nocturnal
polyphagous pest notorious for its resistance to insecticides, necessitates the
development of alternative control strategies that are both environmentally
safe and beneficial. In this study, we assessed the antifeedant action of C.
gigantea through the preparation of extracts from its leaves, fruit
follicles, and latex using alcohol, chloroform, and methanol solvents. The
lethal concentration 50 (LC50) of these extracts was determined to
evaluate their efficacy against S. litura larvae. Remarkably, the
methanol extract of C. gigantea latex exhibited the highest antifeedant
activity, with percentages of 23.98% and 80.34% observed at concentrations of
0.4% and 4.0%, respectively. Additionally, among the crude extracts tested, the
methanol extracts of C. gigantea leaves, fruit follicles, and latex
displayed LC50 values of 64.17±7.892, 71.56±6.639, and 99.42±8.012,
respectively, indicating their significant effectiveness against S. litura
larvae. These findings underscore the potential of C. gigantea extracts
as promising biopesticides for managing S. litura infestations while
highlighting the importance of exploring natural alternatives for pest control,
particularly in the context of evolving insecticide resistance and
environmental sustainability.
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Pages:5-9
How to cite this article:
Swati Tanaji Lawand, Vaishali Sangram Shewale "Evaluation of antifeedant activity of <i>Calotropis Gigantea </i>extracts against <i>Spodoptera litura</i>". International Journal of Entomology Research, Vol 9, Issue 4, 2024, Pages 5-9
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