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Performance of Bt and non-Bt cotton (Gossypium hirsutum) genotypes under cotton-wheat (Triticum aestivum) system*

Indian Agricultural Research Journals

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Title Performance of Bt and non-Bt cotton (Gossypium hirsutum) genotypes under cotton-wheat (Triticum aestivum) system*
 
Creator SINGH, DEVENDRA
SHARMA, S K
PANDEY, RAKESH
KUMAR, VIPIN
 
Subject Bt cotton; Cotton--wheat system; Wheat equivalent yield; Gossypium hirsutum; Monopodes; Sympodes; Photosynthesis; Physiological shedding
 
Description A field experiment was conducted during 2002-03 to test the performance of Bt and non-Bt cotton hybrids 'MECM 915' and 'MECI-I 162' under cotton-wheat system. Highest germination was observed in 'Om Shankar' (99.4%). Vegetative growth was higher in non-Bt than the Bt types due to high number of monopods (5-6 per plant) while sympodes (fruiting branch) were relatively higher (about 50 per cent) in Bt hybrids. 'MECH 9 15' Bt was early for days to 50 per cent flowering (57 days) and boll bursting (92 days) and maturity (1 11 days), as compared to 'MECH 162' (60,99 and 209 days, respectively). Seed-cotton yield was highest (2.25 tonnesiha) in 'MECH 915' Bt than 'MECH 162' (1.9 1 tonnes/ ha) and local hirsutum hybrid and variety (1.56 to 4.76 tonneslha). Late sowing of wheat reduced biomass, leaf area and yield of wheat (9 to 13 %) and system productivity (16 96). WEY was highest (12.1 1 tomes/ha) with 'MECN 915' Bt (cotton) - TPBW 343' (wheat) system.
 
Publisher The Indian Journal of Agricultural Sciences
 
Contributor —
 
Date 2011-01-11
 
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/3371
 
Source The Indian Journal of Agricultural Sciences; Vol 77, No 5 (2007)
0019-5022
 
Language eng
 
Relation http://epubs.icar.org.in/ejournal/index.php/IJAgS/article/view/3371/1395
 
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