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

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Date
2017Auteur
Ouko, R.O.
Koech, S.C.
Arika, W.M.
Osano, K.O.
Ogola, P.E.
Oduor, R.O.
Ngugi, M.P.
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Afficher la notice complèteRésumé
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.