ARCHIVES
VOL. 9, ISSUE 8 (2024)
Methanolic extracts of Ocimum sanctum and Hibiscus sabdariffa as biocontrol agents against the larvae of Leucinodes orbonalis Guenée
Authors
Samreen Unnisa, Mahesh Lingakari, Madhavi Maddala
Abstract
Eggplant (Solanum melongena Linnaeus) is an essential crop in
tropical regions, frequently plagued by the Brinjal Shoot and Fruit Borer, Leucinodes
orbonalis Guenee, which can cause devastating damage up to 80% in fruit
yield and vitamin C content. This pest is particularly destructive in South
Asia, causing significant yield losses in various regions. Traditionally, synthetic
pesticides such as triazophos, cypermethrin, and carbofuran have been used to
manage this pest, but they pose severe risks to beneficial predators and
pollinators. As an eco-friendly alternative, this study investigates the
larvicidal properties of methanolic extracts from Ocimum sanctum and Hibiscus
sabdariffa leaves against fourth instar larvae of L. orbonalis. The plant
extracts were tested at concentrations of 500, 250, 125, and 62.5 ppm. O.
sanctum showed a mortality rate of 26.32% at 62.5 ppm, escalating to 89.47%
at 500 ppm, with an LC50 value of 158.14 ppm. H. sabdariffa extracts
also exhibited notable larvicidal activity, with mortality rates ranging from
17.65% at 62.5 ppm to 76.47% at 500 ppm, and an LC50 value of 237.04 ppm.
Download
Pages:122-126
How to cite this article:
Samreen Unnisa, Mahesh Lingakari, Madhavi Maddala "Methanolic extracts of <i>Ocimum sanctum </i>and <i>Hibiscus sabdariffa</i> as biocontrol agents against the larvae of <i>Leucinodes orbonalis</i> Guenée". International Journal of Entomology Research, Vol 9, Issue 8, 2024, Pages 122-126
Download Author Certificate
Please enter the email address corresponding to this article submission to download your certificate.