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Impact of Bt transgenic cotton on population dynamics of aphids and natural enemies

Indian Agricultural Research Journals

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Title Impact of Bt transgenic cotton on population dynamics of aphids and natural enemies
 
Creator UDIKERI, SHASHIKANT S
PATIL, B V
BASAVANAGOUD, K
KHADI, B M
KULKARNI, K A
VAMADEVAIAH, H M
 
Subject Aphid
Chrysoperla
Cotton
Cry
Predators
 
Description The dynamic aphids and its predator in RCH 2 Bt and non-Bt cotton hybrids was studied to know the effect of Cry toxin. The mean incidence of aphids was 23.82 and 21.37/ leaf in Bt and non-Bt cotton respectively indicating no significant variation. Mean population of coccinellids, Chrysoperla and syrphids was 0.89, 0.78 and 1.0/plant in RCH 2 Bt which was almost similar to the incidence on RCH 2 non Bt. There was strong and positive correlation between incidence of predators and aphid on both Bt and non- Bt cotton. The ‘r’ value for syrphids v/s aphids was 0.94 in RCH 2 Bt and 0.96 in non- Bt. The feeding assay with Bt intoxicated cotton leaves could not affect the biology and feeding potential of Chrysoperla.
 
Publisher Indian Council of Agricultural Research
 
Date 2012-06-06
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
 
Format application/pdf
 
Identifier https://epubs.icar.org.in/index.php/IJAgS/article/view/19046
10.56093/ijas.v82i6.19046
 
Source The Indian Journal of Agricultural Sciences; Vol. 82 No. 6 (2012); 555–60
2394-3319
0019-5022
 
Language eng
 
Relation https://epubs.icar.org.in/index.php/IJAgS/article/view/19046/9396
 
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