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The efficacy of essential oil of Alpinia calcarata (Rosc.) and its major constituent, 1,8-cineole, as protectants of cowpea against Callosobruchus maculatus (F.) (Coleoptera: Bruchidae)
| Content Provider | Semantic Scholar |
|---|---|
| Author | Abeywickrama, Krishanthi Adhikari, A. A. C. K. Paranagama, Priyani Ashoka Gamage, Chammi S. Palehepitiya |
| Copyright Year | 2006 |
| Abstract | The bruchid, Callosobruchus maculatus, (F.) causes major losses during the storage of cowpea seeds [Vigna unguiculata (L.) Walp.] in Sri Lanka. Essential oil was extracted from Alpinia calcarata (Rosc.) and 1,8-cineole, identified as the major constituent of the essential oil, was tested for its potential insecticidal activity against C. maculatus. The adults of C. maculatus were susceptible to both fumigant toxicity and contact and fumigant toxicity of 1,8-cineole and A. calcarata oil. In the fumigant toxicity assay, the LC50 (0.685 g L-1) value of 1,8-cineole was similar to that of A. calcarata oil. However, LC50 values of 0.068 g L-1 and 0.141 g L-1 were obtained for the contact and fumigant toxicity of 1,8-cineole and A. calcarata oil, respectively. Oviposition and F1 adult emergence were significantly inhibited by 1,8-cineole and A. calcarata oil at concentrations higher than 0.80 g L-1 in the fumigant toxicity and 0.123 g L-1 in the contact plus fumigant toxicity. Repellent activity of A. calcarata ... |
| Starting Page | 821 |
| Ending Page | 827 |
| Page Count | 7 |
| File Format | PDF HTM / HTML |
| DOI | 10.4141/p04-013 |
| Volume Number | 86 |
| Alternate Webpage(s) | http://www.nrcresearchpress.com/doi/pdf/10.4141/P04-013 |
| Alternate Webpage(s) | https://doi.org/10.4141/p04-013 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
