IJAIR NAAS Score : 3.99 ,ISSN : 2319-1473
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Insecticidal Effects of Three Solanaceous Plants Against Urentius hystricellus (Richter) (Hemiptera: Tingidae)
- Abdalla A. Satti; Abdelrahman H. Abdelrahman
- Laboratory experiments were conducted to study the insecticidal actions of three solanaceous plants, viz. Nicotiana tabacum (leaves), Solanum dubium (fruits) and Solanum incanum (fruits), compared with that of the commonly known neem (Azadirachta indica) seed extract. Two concentrations (2.5% and 5% w/v) of aqueous extracts from the four plant species were screened in separate bioassay tests against adults and nymphs of the eggplant tingid bug (Urentius hystricellus), a major pest of eggplant in Sudan. All botanical treatments revealed potent insecticidal activities in combating the pest. Significant knockdown effects were achieved by almost all treatments 24 h post exposure, with activities increases progressively with concentration and exposure time. Such treatments gave higher mortality results on nymphs than on adults. Although, superior effects were manifested by N. tabacum and A. indica during early counts (24 and 48 h), comparable results were achieved by the two Solanum spp. during the third check (72 h). However, the better results obtained by N. tabacum against the nymphs, as compared with neem extract, needs further investigations. The latter two plants should be stressed for practical exploitation in management of the tingid bugs on eggplant. However, the promising insecticidal potentialities of the tested plants also encourage more research on indigenous solanaceous species as rich sources of active compounds that need to be checked on various biological aspects (repellent, antifeedant, hormonal etc.) of this pest and others.
- Select Volume / Issue:
- Year:
- 2015
- Type of Publication:
- Article
- Keywords:
- Botanical extracts; Solanaceae; Solanum spp; Nicotiana tabacum; neem; bioassays
- Journal:
- IJAIR
- Volume:
- 3
- Number:
- 4
- Pages:
- 964-967
- Month:
- Jan.-Feb.
- ISSN:
- 2319-1473
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