Biological Systems: Open Access

ISSN - 2329-6577



Bioefficacy of organic extracts of A. sativum against S. zeamais (Coleoptera; Dryophthoridae)

Ouko RO*, Koech SC, Arika WM, Osano KO, Ogola PE, Oduor RO and Ngugi MP

Laboratory based experiments were carried out to determine the fumigant toxicities, repellent and progeny emergence inhibition activities of Methanolic, Hexane and Methanolic: Hexane blend extracts of Allium sativum on Sitophilus zeamais (Coleoptera; Dryophthoridae). Four different concentrations (25, 50, 75 and 100%) of the extracts were tested. the fumigant toxicities of the A. sativum extracts were found to be dependent on both concentration and exposure time. the maximum toxicities (96.15%) was recorded for higher concentration of blend extracts and minimum (6.41%) with hexane extracts of A. sativum at lowest concentration of (25%). The three different A. sativum extracts recorded significantly good level of repellent activities and reduction in progeny emergence.