EFFECT OF SWEET ORANGE PEEL EXTRACT (CITRUS SINENSIS L.) AGAINST COWPEA WEEVILS (CALLOSOBRUCHUS MACULATUS. J.)
Abstract
The Insecticidal property of Citrus sinensis peel extracts was evaluated to determine their efficacy
and optimize their use in reducing cowpea losses due to attack by Callosobruchus maculatus.
Different concentrations of ethanol methanol and acetone were obtained and evaluated at 0%,
6.25%, 12.5%, 25%, 50% and 100%. The mortality was monitored at 3days interval. The toxicity
of the treatment was dependent on concentration and period of exposure. Acetonic extract of Citrus
sinensis was the most effective of all extracts. It caused 100% Callosobruchus maculatus mortality
at 100% concentration within 3 days of exposure. All rates of plant extracts caused mortality of
bruchids and were significantly different compared with the control. There is a need to adapt the
use of plant extracts in preventing damages against store pests. It is less toxic, environmental
friendly, renewable, cheap and degradable. Protecting stored cowpea using Citrus sinensis peel
at small- holder level is a good storing method.
Full-Text Access Notice
In accordance with the NERD Policy on promoting peer-reviewed publication, public access to the full text of a project, thesis or dissertation is restricted for three years, allowing the author and supervisors sufficient time to pursue peer-reviewed publication.
During this period, researchers with legitimate academic or research purposes may request authorisation directly from the author to enable NERD to release the indexed full texts of the work using the form below.