Hematpoor, Arshia and Liew, Sook Yee and Omar, Hasmahzaiti and Shilpi, Jamil Ahmad and Zahari, Azeana and Syamsir, Devi Rosmy and Salleh, Haslinda Mohd and Tohar, Norsita and Kim, Rosalind Pei Theng and Qureshi, Ahmad Kaleem and Nasrullah, Ayu Afiqah and Chan, Gomathi and Tiong, Soon Huat and Hamdi, Omer Abdalla Ahmed and Othman, Muhammad Remy and Leong, Sow Tein and Awang, Khalijah and Mawi, Masdah and Asib, Norhayu (2022) Toxicity of Malaysian Medicinal Plant Extracts against Sitophilus oryzae and Rhyzopertha dominica. Pertanika Journal of Tropical Agricultural Science, 45 (4). 1137- 1160. ISSN 1511-3701, DOI https://doi.org/10.47836/pjtas.45.4.17.
Full text not available from this repository.Abstract
The insecticidal activities of extracts from 22 Malaysian medicinal plant extracts from 8 botanical families were tested against rice weevil: Sitophilus oryzae (L.) and lesser grain borer: Rhyzopertha dominica (F.). The extracts were obtained using hexane, methanol, and dichloromethane to extract potential biopesticides from dried leaves. The toxicity levels were examined periodically based on antifeedant activity and contact toxicity assays using treated grain assay. Hexane extracts of Alpinia conchigera, Alpinia scabra, Curcuma mangga, Curcuma purpurascens, Goniothalamus tapisoides, Piper sarmentosum, and methanol extracts of Curcuma aeruginosa, C. mangga, and Mitragyna speciosa were the most potent extracts against S. oryzae and R. dominica with lethal concentration (LC50) values of ≤ 0.42 mg/mL and ≤ 0.49 mg/mL, respectively. The contact toxicity test results showed that methanol extracts of C. aeruginosa and C. mangga, dichloromethane extracts of Cryptocarya nigra, and hexane extracts of C. mangga, and C. purpurascens resulted in 100 mortality of both pests within 28 days exposure of 5 mg/cm2 concentration. © Universiti Putra Malaysia Press.
| Item Type: | Article |
|---|---|
| Funders: | Universiti Putra Malaysia Research Grant Putra (Grant No: IPM/9548600] |
| Uncontrolled Keywords: | Antifeedant; Insecticidal activity; Lesser grain borer; Malaysian medicinal plant; Rice weevil |
| Subjects: | S Agriculture > S Agriculture (General) |
| Divisions: | Centre for Foundation Studies in Science Faculty of Science > Institute of Biological Sciences Faculty of Science > Department of Chemistry |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 23 Oct 2023 08:04 |
| Last Modified: | 23 Oct 2023 08:04 |
| URI: | http://eprints.um.edu.my/id/eprint/43709 |
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