Productivity, competition indices and soil fertility changes of Bt cotton (Gossypium hirsutum) – groundnut (Arachis hypogaea) (Gossypium hirsutum) – groundnut (Arachis hypogaea)
Indian Agricultural Research Journals
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Title |
Productivity, competition indices and soil fertility changes of Bt cotton (Gossypium hirsutum) – groundnut (Arachis hypogaea) (Gossypium hirsutum) – groundnut (Arachis hypogaea)
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Creator |
SINGH, RAMAN JEET
AHLAWAT, I P S |
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Subject |
Bt cotton; Competition functions; Fertility; Groundnut; Nutrient uptake; Yield
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Description |
A field experiment was conducted during rainy (kharif) seasons of 2006 and 2007 to study the productivity, biological feasibility, economic viability and nutrient dynamics in Bt cotton (Gossypium hirsutum L.) - groundnut (Arachis hypogaea L.) intercropping system under various fertility levels. Groundnut as an intercrop enhanced the productivity of cotton by 0.25 tonne/ha. Cotton receiving no N showed superior performance of intercropped groundnut in terms of pods/plant (36.0), kernels/ pod (1.56) and pod yield (0.56 tonne/ha). The mean N, P, K uptake in intercropped cotton were 79.4, 6.6, and 46.0 kg/ha higher than sole cotton (149.9, 16.3 and 80.0 kg/ ha), respectively. Among N management practices, substitution of 25% RDN through farmyard manure in cotton gave the highest system productivity (3.5 tonnes seed cotton equivalent yield/ha), net returns (`50 780) and production efficiency (19.4 kg/ha/day). The highest B: C ratio (2.58) was observed with 100% RDN, followed by 75% RDN + 25% through FYM (2.29). Control treatment gave the highest LER (1.72), RNR (1.37) and ATER (1.47), followed by 50% RDN + 50% through FYM. However, soil NPK balance were in favour of 50% RDN substitution through farmyard manure.
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Publisher |
The Indian Journal of Agricultural Sciences
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Contributor |
—
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Date |
2011-07-01
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Type |
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion Peer-reviewed Article |
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Format |
application/pdf
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Identifier |
http://epubs.icar.org.in/ejournal/index.php/IJAgS/article/view/7376
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Source |
The Indian Journal of Agricultural Sciences; Vol 81, No 7 (2011)
0019-5022 |
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Language |
eng
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Relation |
http://epubs.icar.org.in/ejournal/index.php/IJAgS/article/view/7376/2954
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Rights |
Copyright (c) 2014 The Indian Journal of Agricultural Sciences
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