search
for
 About Bioline  All Journals  Testimonials  Membership  News  Donations


Zoological Research
Kunming Institute of Zoology, Chinese Academy of Sciences
ISSN: 2095-8137
Vol. 26, No. 3, 2005, pp. 243-249
Bioline Code: zr05004
Full paper language: English
Document type: Research Article
Document available free of charge

Zoological Research, Vol. 26, No. 3, 2005, pp. 243-249

 en Bioactivity of Four Plant Extracts on Coleopterous Pests of Stored Cereals and Grain Legumes in Nigeria
Chris O. ADEDIRE, Rotimi O. AKINKUROLERE

Abstract

The efficacy of ethanol extracts from four plants, Dennettia tripetala check for this species in other resources Baker, Eugenia aromatica check for this species in other resources Baillon, Piper guineense check for this species in other resources Thonn et Schum and Anchomanes difformis check for this species in other resources P. Beauv. As bioinsecticides for control of adult Sitophilus zeamais check for this species in other resources Motschulsky, Tribolium castaneum check for this species in other resources Herbst, Callosobruchus maculatus check for this species in other resources Fabricius, Oryzaephilus mercator check for this species in other resources Fauvel and Lasioderma serricorne check for this species in other resources Fabricius were determined at two concentrations (0.5% and 2.0%) in the laboratory. All extracts were toxic to beetles with E. aromatica being the most potent of four plant materials tested and had the least LT50 value. This was followed by A. difformis extract. At 2.0% v/w extract concentration, percentage grain damage by insects in treated grains stored for 90 days was nil. Grains protected with A. difformis had the least percentage seed germination of 62.50% while those protected with P. guineense had the highest percentage germination (74.58%) at 2.0% extract concentration. The mean percentage germination in the control was 72.72%. Treatment of grains with plant extracts had no significant (P>0.05) effect on its water absorption capacity.

Keywords
Coleopterous pest; Plant extract; LT50; Seed viability

 
© Copyright 2005 Kunming Institute of Zoology, the Chinese Academy of Sciences
Alternative site location: http://www.zoores.ac.cn/

Home Faq Resources Email Bioline
© Bioline International, 1989 - 2017, Site last up-dated on 16-Oct-2017.
Site created and maintained by the Reference Center on Environmental Information, CRIA, Brazil
System hosted by the Internet Data Center of Rede Nacional de Ensino e Pesquisa, RNP, Brazil