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Repellent efficacy of Crotalaria burhia and Anacardium occidentale against Odontotermes obesus (Isoptera: Termitidae) under laboratory conditions

Indian Agricultural Research Journals

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Title Repellent efficacy of Crotalaria burhia and Anacardium occidentale against Odontotermes obesus (Isoptera: Termitidae) under laboratory conditions
 
Creator M, RANJITH
BAJYA, D R
MANOHARAN, T
SRIDHARAN, S
KUTTALAM, S
 
Subject Anacardium occidentale, Crotalaria burhia, Odontotermes obesus, Repellency
 
Description Laboratory studies were carried out at bioassay lab, Institute of Pesticide Formulation Technology, Gurgaon to incur the repellent efficacy of Crotalaria burhia Buch.-Ham and Anacardium occidentale L. against Odontotermes obesus (Rambur). Aqueous root extracts of C.burhia at different concentrations, viz. 0.5%, 1%, 2.5%, 5%, 10% and 20% and powdered leaf dusts of A. occidentale at 0.5%, 1%, 2.5%, 5%, 7.5% and 10% concentrations were prepared and tested for their repellent action against O. obesus, Chlorpyrifos 20% EC was maintained as standard check. An area of preference test described by Landani et al. (1955) and Mc Donald et al. (1970) was followed and the results unveiled that root extracts of C. burhia at concentration of 10% and 20% gave a mean repellency of 66.66% and 70%, whereas 5% and 7.5% powdered leaf dust of A. occidentale gave a mean repellent efficacy of 56.66% and 60%. The lower doses of C. burhia and A. occidentale were not much effective in repelling away O. obesus. The standard check chlorpyrifos 20% EC resulted in 96.66 % and 100% repellency in both the studies. Thus higher doses of root extracts of C. burhia and powdered leaf dust of A. occidentale can be further tested for their repellent efficacy in field against O. obesus and can be included in IPM for termites, as botanicals in IPM are gaining accent as they are environmentally safe.
 
Publisher The Indian Journal of Agricultural Sciences
 
Contributor —
 
Date 2015-09-08
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
 
Format application/pdf
 
Identifier http://epubs.icar.org.in/ejournal/index.php/IJAgS/article/view/51641
 
Source The Indian Journal of Agricultural Sciences; Vol 85, No 9 (2015)
0019-5022
 
Language eng
 
Relation http://epubs.icar.org.in/ejournal/index.php/IJAgS/article/view/51641/21843
 
Rights Copyright (c) 2015 The Indian Journal of Agricultural Sciences