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International Journal of Fauna and Biological Studies

FAUNA

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e-ISSN : 2347-2677, p-ISSN : 2394-0522

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International Journal of Fauna and Biological Studies

2016, Vol. 3 Issue 1, Part A
Insecticidal potentiality of Eruca sativa (mill.), Piper nigrum (l.) and Withania somnifera (l.) extracts against Trogoderma granarium (everts) (Coleoptera: Dermestidae)
Author(s): Mudassar Javed, Muhammad Zeeshan Majeed, Muhammad Arshad, Muhammad Hannan Ahmad, Hafiz Abdul Ghafoor
Abstract: The Khapra beetle, Trogoderma granarium is the most voracious and pervasive pest of stored grain products under tropical and subtropical environments. In this study insecticidal potential of plant extracts of Eruca sativa, Piper nigrum and Withania somnifera was tested against Trogoderma granarium under laboratory conditions 30±20 oC and 65±5% R.H, with four extract concentrations (2, 4, 6 and 8%) and an untreated check for each plants extract. The insecticidal action was evaluated in terms of adults’ mortality rate, growth inhibitory effect and their latent effects on population build up in F1 progeny. Experimental results indicated that per cent mortality of Trogoderma granarium was maximum due to the Piper nigrum (15.26%) followed by Withania somnifera (10.41%) and Eruca sativa (7.15%). Nonetheless, per cent population buildup was seen maximum due to the Eruca sativa (115.47%) followed by Withania somnifera (92.33%) and Piperrnnigrum (78.60%). Further, Piper nigrum treated Trogoderma granarium exhibited reduced growth rate as compared to other extracts. It is concluded that order of efficacy of all plant extracts was Piper nigrum > Withania somnifera > Eruca sativa, and thus indicated piper nigrum extract as potential natural insecticides against Trogodermagranarium
Pages: 18-20  |  557 Views  26 Downloads
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