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Development, feeding belhaviour and supviva1 of spotted bollosrsrm (Earias vitfejlck) on upland cotton (Gossypiunr hirsratum) in Haryana*

Indian Agricultural Research Journals

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Title Development, feeding belhaviour and supviva1 of spotted bollosrsrm (Earias vitfejlck) on upland cotton (Gossypiunr hirsratum) in Haryana*
 
Creator CECILY, A
SAINI, R K
 
Subject Crop protection; Earias vittella; Duration; Development; Dispersal; Feeding behaviour; Survival
 
Description Field studies on development, larval dispersal, feeding establish feeding site during different months behavior and survival of Earias vittella (Fab.) during July to Month Fortnight Time taken (minutes) by larva during October 200 1 reveals mean incubation period of 3.19 (2-5) different crop phases days, egg hatchability of 82.9,74.6, 67.1 and 63.8 % during Vegetative phase July, August, September and October respectively and ab~ut Upper unopened Terminal end 28 % egg inviability. Mean larval duration was 10.15, 10.37 tiny leaves and 11.46 days during July, August and September July I 165.00 147.00 respectively while pupal duration was 10.06,11.28 and 12.56 I1 179.12 180.60 days during August, September and October respectively. August I 137.60 194.50 During the larval stage there was 72 % mortality from neonate Overall mean 172.79 up to pupation. Rate of mortality declined with increase in Reproductive phase larval age. The first instar larva crawled over the plant Squares Bolls surface for 173 (138-195) minutes during vegetative phase I1 186.12 221.12 and 204 (1 78-22 1) minutes during reproductive phase of the September I 177.88 211.37 crop and the larva covered a distance of 80-120 and 60-1 10 I1 210.00 215.12 cm,in the above 2 phases respectively. Under no choice Overall niean 203.60 conditions, a single larva damaged 2.8 (2-4) squares or 2.9 Sample size for each category : 24 larvae 1 fortnight (2-3) young bolls or 1.7 (1-2) older bolls before pupation.
 
Publisher The Indian Journal of Agricultural Sciences
 
Contributor icar
 
Date 2011-01-10
 
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/3397
 
Source The Indian Journal of Agricultural Sciences; Vol 77, No 4 (2007)
0019-5022
 
Language eng
 
Relation http://epubs.icar.org.in/ejournal/index.php/IJAgS/article/view/3397/1417
 
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