COMPARATIVE BIOINSECTICIDAL EFFECT OF ETHANOLIC EXTRACT OF ZANTHOXYLUM ZANTHOXYLOIDES (LAM) ZEPERNICK & TIMLER ONSOME SELECTED INSECTS OF ECONOMIC IMPORTANCE TO MAN

Mohammad Gbate

Department of Science Laboratory Technology

 Federal Polytechnic, Bida, Nigeria

gbatem2007@yahoo.com

ABSTRACT

Ethanolic extract of Zanthoxylum zanthoxyloides was assayed for its insecticidal propertieson Musca domestica, Callosobruchus maculates, Anopheles mosquito and Sitophilus zeamais. 1%, 2% and 4% w/v of aqueous solution of the extract was topically administered on the insects and mortality was monitored at 15, 30, 45, 60, 90 and 105 minutes intervals. The efficacy of the extract as insecticide increases with increasing concentration with 4% solution giving the best result in all cases. 4% w/v of the extract killed all the M. domestica, C. maculates, Anopheles mosquito and S. zeamais by 75^th, 45^th, 60^th and 45^th minutes respectively. This suggest that Z.  zanthoxyloides has a great potential as a bioinsecticide. Keywords: Ethanolic extract, Zanthoxylum zanthoxyloides, bioinsecticide