Epicarp of Citrus sinensis: A potential source of natural pesticide

AMRITESH C. SHUKLA, SUSHIL K. SHAHI and ANUPAM DIKSHIT

Abstract


Oil from the epicarp of Citrus sinensis exhibited strong fungitoxicity at 0.5% concentration against Aspergillus flavus, Penicillium italicum and Alternaria alternata as a contact toxicant. At the same concentration, the oil inhibited heavy doses ofinocula and exhibited quick killing action. The pesticidal activity of the oil was thermostable up to 80℃ and lasted up to 24 months. Besides a broad pesticidal spectrum, the oil was found to be more active than some commercial synthetic pesticides. The oil did not exhibit any adverse effect on seed germination and seedling growth of the host plant Triticum vulgare [T. aestivum] up to 10% concentration and was reported harmless to human health. Therefore, it can be used as a potential source of natural pesticide after undergoing successful multilocational in vivo trial.


Keywords


Essential oil, pesticide, storage fungal pests

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