Essential oil from Allium sativum was isolated and investigated for its repellent, insecticidal, ovipositional and egg hatching inhibition activities against pulse beetle, Callosobruchus chinensis (Coleoptera: Bruchidae). A. sativum essential oil repelled bruchid adults at a very low concentration in choice oviposition assay. A. sativum essential oil caused both fumigant and contact toxicity in C. chinensis adults in a concentration dependent manner. Oviposition potency of C. chinensis adults was reduced significantly when sublethal concentrations of A. sativum essential oil were applied by fumigation and contact method. In chronic toxic-ity assay, A. sativum essential oil reduced F 1 progeny emergence, damage and weight loss in seeds. Findings of the present study suggest that A . sativum essential oil can be useful as promising agent in insect pest management programme.
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Mukesh Kumar Chaubey (2014) studied this question.
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