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.: Home > Nature and Science > 2012 > Volume 10 Number 9 > A.O. Adebiyi and P.O.Tedela

Pesticidal effects of extracts of Barbula indica on Callosobruchus maculatus ( Coleoptra Bruchidae)

A.O. Adebiyi and P.O.Tedela
Department of Plant Science, Ekiti State University, Ado Ekiti, Nigeria djadebiyi@yahoo.com
Abstract :

A laboratory experiment was conducted to investigate the insecticidal potential of aqueous and ethanol extracts of Barbula indica (a moss plant) on the survival of Callosobruchus maculatus F. a major storage pest of cowpea in Nigeria. Air dried plant materials were sieved to remove sandcrete materials. They were then ground into powder and portions of 1g, 2g,3g,and 4g each of the powder was suspended in 100ml of cold distilled water and ethanol separately for 24 hours. Each of these was filtered using a clean muslin cloth and the filtrates were used for the experiment. The effects of the extracts were tested on cowpea weevils. Percentage mortality of the weevils at 24, 48 and 72hours of treatment were recorded for these extracts at different concentrations.The results obtained indicated that the extracts caused significant reduction in the number of the weevils through contact killing, when compared with the control. Highest mortality was recorded in ethanol extract of the plant at 4% concentration. The plant can be used as an effective bio pesticide.

Keywords :
Callosobruchus maculatus, Barbula indica, pest.

Date Deposited : 18 May 2016 19:52

Last Modified : 18 May 2016 19:52

Official URL: http://www.sciencepub.net/nature/

Volume 10, Number 9, - 2012 , ISSN 1545-0740

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