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Combined effect of margosa oil and diflubenzuron on tobacco caterpillar (Spodoptera litura) and gram podborer (Helicoverpa armigera)

Indian Agricultural Research Journals

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Title Combined effect of margosa oil and diflubenzuron on tobacco caterpillar (Spodoptera litura) and gram podborer (Helicoverpa armigera)
 
Creator Durairaj, C
Venugopal, M S
 
Subject —
 
Description A laboratory experiment was conducted during 1992 to study the combined effect of margosa (Azadtrachta indica A. Juss.) oil and diflubenzuron in various combinations on tobacco caterpillar [Spodoptera Iitura (Fabr.)] and gram podborer [Helicoverpa armigera (HObn.)]. The insecticidal effect was assessed by their anti-feedant, morphogenetic effect and larval mortality. Margosa oil 2% + diflubenzuron 0.015% recorded the lowest leaf area (9.3 cm2) fed and faecal peUet weight (63 mg) with earlier larval mortality on tobacco caterpillar. In gram podborer the maximum anti-feedant activity with lowest faecal pellet weight (0.139 g) and earlier larval mortality (at 13 days after treatment) were recorded in margosa oil 2% + diflubellZllron 0.03 %. The larval mortality was due to difficulty in moulting between various stages of larval instars and the formation of larval-pupal mosaics.
 
Publisher The Indian Journal of Agricultural Sciences
 
Contributor —
 
Date 2012-05-25
 
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/18246
 
Source The Indian Journal of Agricultural Sciences; Vol 65, No 4 (1995)
0019-5022
 
Language eng
 
Relation http://epubs.icar.org.in/ejournal/index.php/IJAgS/article/view/18246/8791
 
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