author(s)
Oni MO, Olatujoye KS, Ogungbite OC and Ofuya TI

abstract
The potential of crude and twelve fractions of Acalypha wilkesiana oil extract was tested against cowpea beetle Callosobruchus maculatus at 20, 30, 40 and 50 μl dosages in triplicates. The results obtained were dosage and exposure time dependent. Fraction 1 of the oil extract caused 100% insect mortality at 40 and 50 μl within 96 h of application. The fraction significantly repelled the adult beetles, inhibited oviposition, adult emergence and apparently reduced seed weight-loss. The correlation between the adult emergence and seedweight-loss were greater than that of the mortality and oviposition as reflected by their R-values. Benzyl-alcohol was found to be in abundant in fraction 1 of the oil extract. Since, fraction 1 of oil extract of A. wilkesiana has proven insecticidal against C. maculatus infestation, it can be included in the new integrated pest management strategies.