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Effect of certain botanicals on biological activity of nuclear polyhedrosis virus of tobacco caterpillar (Spodoptera litura)

Indian Agricultural Research Journals

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Title Effect of certain botanicals on biological activity of nuclear polyhedrosis virus of tobacco caterpillar (Spodoptera litura)
 
Creator BASKARAN, R K
VENUGOPAL, M S
MAHADEVAN, N R
 
Subject nuclear polyhedrosis virus, neem-seed-kernel extract, neem-cake-extract, biological activity, tobacco caterpillar, Spodoptera litura
 
Description Result of the laboratory experiment on the control of tobacco caterpillar (Spodoptera litura Fabricius) with itsnuclear polyhedrosis virus alone at I X IDs POBsf/ml and in combination at 2 X 104 POBs/ml (LC50 of SI NPV) with 1%neem oil and neem-seed-kemel extract and 5% neem-cake-extract indicated that there was an increase in efficacy ofnuclear polyhedrosis virus and the virus induced mortality was enhanced from 31.1 mean per cent mortality to 81.5,81.5 and 57.6% respectively. Combination of nuclear polyhedrosis virus with Vitex negundo Linn. 10% did not increasethe efficacy of nuclear polyhedrosis virus appreciably, while Prosoplis juliflora DC. and Ipomoea carnea Jacq. hadantagonistic effect with nuclear polyhedrosis virus. Nuclear polyhedrosis virus along with necm products reduced theleaf damage by larvae and LT50 of nuclear polyhedrosis virus. Suspending nuclear polyhedrosis virus in differentconcentrations (0.10-1 .00%) of neem oil and neem-seed-kemel-extract reduced the LC50 of nuclear polyhedrosis virusby 1.06 to 1.43 folds and 1.03 to 1.33 folds respectively.
 
Publisher The Indian Journal of Agricultural Sciences
 
Contributor —
 
Date 2013-01-16
 
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/26563
 
Source The Indian Journal of Agricultural Sciences; Vol 69, No 3 (1999)
0019-5022
 
Language eng
 
Relation http://epubs.icar.org.in/ejournal/index.php/IJAgS/article/view/26563/12129
 
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