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 75th, 45th, 60th and 45th minutes respectively. This suggest that Z. zanthoxyloides has a great potential as a bioinsecticide. Keywords: Ethanolic extract, Zanthoxylum zanthoxyloides, bioinsecticide