Efficacy of synergized and non-synergized Tagetes minuta methanol extract in controlling Periplaneta americana within households
Publication Date
2015Author
Antony Otengo Otinga, David Miruka Onyango, Dickson Otieno Owiti, Lawrence Onyango Arot Manguro
Metadata
Show full item recordAbstract/ Overview
In this study, comparative analysis of Sesamum indicum L. oil synergized and non-synergized methanol extract of the T. minuta were assayed against P. americana collected from households within Maseno Division, Kenya. The mortality and LC50 for both synergized and non-synergized extracts were determined. The synergized extract had cockroach mortality of 60 (n = 60) (100%) while non-synergized showed mortality of 52 (n = 60) (86.1 ± 1.2%) at 22 μg/ml after 36 h using contact toxicity method. On the other hand, with fumigation method, 100% mortality of the pest was achieved within 30 h using synergized extract while the non-synergized extract afforded 84.0 ± 1.1% mortality at the same concentration after the same period of time. The LC50 for the synergized extract was observed to be 6.31 μg/ml while the non-synergized was found to be 8.91 μg/ml. Thus, T. minuta extract may be used alone or synergized with S. indicum oil for effective management of cockroaches within households.
Collections
- Department of Zoology [160]