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Toxicity and repellency of ethanol extracts of Annona reticulate L . seed and leaf against Callosobruchus maculatus ( F . ) ( Coleoptera : Bruchidae )
| Content Provider | Semantic Scholar |
|---|---|
| Author | Vanichpakorn Kulvijitra |
| Copyright Year | 2015 |
| Abstract | Ethanol extracts of Annona reticulata L. seed and leaf were evaluated for their toxicity and repellency at 6 concentrations (0.25, 05, 1, 2, 3 and 4%) against adult of Callosobruchus maculatus. The toxicity of plant extracts was tested by contact and fumigation bioassay. Mortality was assessed at 24, 48 and 72 h after treatment. The repellent activity of the previous extracts was also studied using the area preference bioassay. The both extracts showed strong insecticidal activity to the insect in both testing methods. In contact bioassay, the LC50 values for seed and leaf extracts were 6.18 and 6.81% at 24 h, 4.61 and 6.20 % at 48 h, and 1.61 and 1.73% at 72 h, respectively. In fumigation bioassay, their LC50 values were 8.60 and 8.69% at 24 h, 5.76 and 6.68% at 48 h, and 1.54 and 1.71% at 72 h, respectively. Moreover, the both extracts also showed repellent activity against C. maculatus in which seed extract was better than leaf extract. The mean repellency for seed extract ranged between class III and V (42.76-84.00%) while that for leaf extract ranged between class II and IV (29.6372.16%). The repellency rate increased proportionally with the increase of concentration of the extract. These results indicated that A. reticulata has potential for integrated pest management programs of C. maculatus population. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://spiru.cgahr.ksu.edu/proj/iwcspp/pdf2/11/171.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
