Soil fertility and productivity in rice (Oryza sativa)-wheat (Triticum aestivum) cropping system as influenced by sunnhemp (Crotalaria juncea) green manuring
Indian Agricultural Research Journals
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Title |
Soil fertility and productivity in rice (Oryza sativa)-wheat (Triticum aestivum) cropping system as influenced by sunnhemp (Crotalaria juncea) green manuring
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Creator |
Mahapatra, B S
Kumar, Ajay Misra, Alabhya Kumar, Rajeev Pareek, R P |
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Subject |
Cropping sequence productivity; Crotalaria; Nitrogen uptake; Organic carbon; Nitrogen
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Description |
A field experiment was conducted during 2001-2002 and 2002-2003 on Mollisols of the university at Pantnagar, to study the effect of green manuring involving 4 genotytpes of sunnhemp (Crotularia juncea L.) on the biomass production, total productivity, nutrient removal in rice (Oryza sativa L.)-wheat (Triticum aestivum L. emend. Fiori & Paol.) system as well as changes in available nitrogen, total nitrogen, 6 N hydrolysable nitrogen and organic carbon content in soil. Among sunnhemp genotypes 'NDAUT (C) 2' recorded highest number of root nodules (29.8 /plant), and their fresh weight (449 mg/plant). The fresh and dry biomass accumulation by 'NDUAT (C) 2' genotype was highest compared with the other genotypes. Its incorporation as green manure gave higher grain yield in rice-wheat sequence (ie 3647 kg/ha of rice and 1569 kg/ha of wheat). Nitrogen uptake was higher owing to green manure application as compared to control, green manuring of 'NDUAT (C) 2' recorded highest N uptake of grain + straw (66.82 kg/ha in rice and 31.95 kg/ha in wheat) among sunnhemp genotypes. The organic carbon content in soil due to green manure incorporation was increased at the end of two year cropping sequence. 'PAU (C) 1 ' green manuring (0.730% organic carbon) resulted in 15.5% increase in organic carbon content over the control (0.632% organic carbon). Available N also increased in soil due to green manuring when compared to control. The 6N hydrolysable nitrogen was also higher in green manured plots compared with the control.
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Publisher |
The Indian Journal of Agricultural Sciences
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Date |
2005-10-05
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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/9184
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Source |
The Indian Journal of Agricultural Sciences; Vol 75, No 10 (2005)
0019-5022 |
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Language |
eng
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Relation |
http://epubs.icar.org.in/ejournal/index.php/IJAgS/article/view/9184/3916
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Rights |
Copyright (c) 2014 The Indian Journal of Agricultural Sciences
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