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Leaf δ- endotoxin content and performance of Bt cotton (Gossypium hirsutum) genotypes as influenced by fertility levels for target yields

Indian Agricultural Research Journals

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Title Leaf δ- endotoxin content and performance of Bt cotton (Gossypium hirsutum) genotypes as influenced by fertility levels for target yields
 
Creator Patil, A S Police
Chittarpur, B M
Udikeri, S S
 
Subject Bt cotton
δ-Endotoxin
Nitrogen uptake
Target yield
 
Description Two Bollgard I (cvs.MRC 6322 and MRC 6918) and two Bollgard II (cvs.MRC 7351 and MRC 7201) hybrids were supplied with three fertilizer levels (145:39:99, 181:49:124 and 217:59:148 NPK kg/ha, respectively1) targeted for 2.0, 2.5 and 3.0 tonnes/ha of seed cotton yield. d- Endotoxin content was higher in Bollgard II hybrids and MRC 6322 was comparable and the toxin content increased with increase in fertilizer level. However, the number of bad opened bolls differed among genotypes and it followed the total number of bolls rather than d- endotoxin content. Thus, the study brings two important points. First one is that in the selection of Bollgard I or Bollgard II hybrids, the intensity of population of pest in question matters most. And, secondly targeted yields set in the study were easily achieved and often exceeded. Hence, it is possible to achieve target yield of 3.0 tonnes/ha using desired level of fertilizer in most of the Bt hybrids, and this point needs emphasis as cotton is a commercial crop and for farmer monetary returns matter most.
 
Publisher Indian Council of Agricultural Research
 
Date 2012-07-11
 
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/21698
10.56093/ijas.v82i7.21698
 
Source The Indian Journal of Agricultural Sciences; Vol. 82 No. 7 (2012); 645–8
2394-3319
0019-5022
 
Language eng
 
Relation https://epubs.icar.org.in/index.php/IJAgS/article/view/21698/10854
 
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