Abstract
The cowpea weevil, Callosobruchus chinensis L. (Coleoptera: Bruchidae), is an important pest of stored cowpea, Vigna ungiculata (L.) Walpers (Fabales: Fabaceae), with ample distribution in tropical and subtropical regions. Many plant essential oils have a broad-spectrum activity against pest insects, and these oils traditionally have been used in the protection of stored products. The present investigation was aimed to assess the impact of two essential oils for their insecticidal activity against C. chinensis and they were tested in laboratory. In this study, the lethal and sub-lethal effects of essential oils from Aegle marmelos (L) Correa (Rutaceae) and Citrus reticulata (Rutaceae) were evaluated against the larvae and adults of C. chinensis at 30 ± 2° C, 75 ± 5% RH, and a photoperiod of 10:14 L:D. The LC50 values of A. marmelos and C. reticulata were 14.351 !IL and 15.231 !IL after 72 hr against adults and 13.296 [t.1_, and 14.997 1.11_, after 72 hr of exposure against larvae, respectively. Therefore, these essential oils can be suggested for controlling C. chinensis in storage systems.
Publisher
Auricle Technologies, Pvt., Ltd.
Subject
Animal Science and Zoology
Reference29 articles.
1. Fornal, J., T. Jeli'nski, J. Sadowska, S. Grundas, J. Nawrot, A. Niewiada, J.R. Warchalewski & W. B3aszczak, 2007. Detection of granary weevil Sitophilus granarius (L.) eggs and internal stages in wheat grain using soft X-ray and image analysis. J. Stored Prod. Res., 43, 142-148.
2. Haff, R.P. & D.C. Slaughter, 2004. Real-Time X-Ray Inspection of Wheat for Infestation by the Granary Weevil, Sitophilus granarius (L.). Trans. ASAE, 47:531-537.
3. Demeter, S., 0. Lebbe, E Hecq, S. Nicolis, T.K. Kemene, H. Martin, M.L. Fauconnier & T. Hance, 2021. Insecticidal Activity of 25 Essential Oils on the Stored Product Pest, Sitophilus granarius. Foods, 10: 200.
4. Alam, M.Z., 1971. Pests of stored grain and other stored products and their control, Bangladesh; pp. 361.
5. Atwal, A.S., 1976. Insect Pests of stored grain and other stored products. In: Agricultural Pests of India and South East Asia. pp: 389-415. Kalyani Pub. New Delhi, India.