Oyegoke Oyewole Oyebamiji, Babarinde Samuel Adelani ,Agboola Adebola Racheal
Abstract
The biological activity of ethanolic extract of Cleome ciliata leaves was evaluated in the laboratory
(70 ± 5% relative humidity and 28 ± 2oC temperature). C. ciliata caused significant mortality at 6-10%
(v/w) when compared with the control. Mortality was dose-and exposure period-dependent except for a
treatment of 6% when mortality at 1 and 3 days after treatment (DAT) was 45%. At 3-5% (v/w) number of F1 adult
was significantly lower than the two control treatments. At 5% (v/w) C. ciliata prevented weight loss.
The control without ethanol had 6.51 g weight loss (out of 20 g initial weight) which was significantly higher than
weight loss (1.76 g) observed in grain treated with 3% C. ciliata extract. Although, S. zeamais adults were not
significantly repelled by C. ciliata, percentage repellency was dose-dependent with 40% repellency recorded
in 0.3 ml/30 cm2 while the control had 13.33% repellency. The result indicates that C. ciliata can be effectively
used to control resident S. zeamais in stored maize but not prevent immigrant population.
Key words:
Cleome ciliata, repellency, ethanolic extract, weight loss, F1 adult, Sitophilus zeamais