Repellant and termicidal activity of some plant extracts in the laboratory and on the field

Abstract : 

The study evaluated the residual, repellant and termiticidal effects of extracts from four botanicals namely; Moringa oleifera, Polyalthia longifolia, Tithonia diversifolia and Azadirachta indica on termite in the laboratory and on the field at Federal University of Agriculture, Abeokuta, Ogun State, Nigeria. A synthetic insecticide, chlorpirifos was used as positive check and distilled water as control. Residual effect, repellency and contact toxicity of the treatments by topical application was conducted in the laboratory using standard methods. Chlorpirifos caused 100% mortality at 2 h after treatment and all the extracts except P. longifolia caused 100% at 10 h after treatment. The least in terms of repellency was the extract of P. longifolia that repelled 60% of the insects; followed by the extracts of A. indica and T. diversifolia that comparably (p>0.05) repelled 80% of the insects at a piece. Chlorpyrifos and extract of M. olefeira repelled all the insects (100%). The percentage repellence of chlorpyrifos and the plant extracts were (p>0.05) comparable. The residual effects of chlorpyrifos and all the extracts after 24 h caused 100% mortality of the termites. On the field, chlorpirifos and all the plant extracts except A. indica were rated as highly effective, while extract of A. indica and distilled water were rated as ineffective. Extracts of M. oleifera, P. longifolia and T. diversifolia has repellant, residual and termiticidal effects on termite in the laboratory and on the field and could be used as relatively cheaper and eco-friendly termiticide for the management of termite

Keyword : 

Chlorpirifos, extract, botanicals, termites, mortality

Author(s) : , A. A. Osipitan, E. O. Amodu, C. T. Kudemepo, B. I. Ewedairo
Downloads : 40

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