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Utilization of 15 N-labelled ammonium and nitrate-N by soybean (Glycine max) and wheat (Triticum aestivum) grown in Typic Haplustert

Indian Agricultural Research Journals

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Title Utilization of 15 N-labelled ammonium and nitrate-N by soybean (Glycine max) and wheat (Triticum aestivum) grown in Typic Haplustert
 
Creator KUNDU, S
BARMAN, K K
SINGH, MUNESHWAR
TAKKAR, P N
 
Subject 15 N, ammonium-N, nitrate-N, soybean, wheat, Haplustert
 
Description Pot culture experiment was conducted during 1992-93 winter season and 1993 rainy season to study the comparative use efficiency of ammonium-N and nitrate-N fractions of ammonium nitrate in wheat (Triticum aestivum L. emend. Fiori & Paol.) and soybean [Glycine max (L.) Merr.] grown on Typic Haplustert soil using alternate tagging tracer technique. In wheat the ratio of plant N derived from 15N tagged ammonium-N to 15N tagged nitrate-N varied from 0.75 to 0.86 against their ratio of 1.0 in the applied fertilizer· indicating preference fornitrate-N over ammonium-N and thereby resulting in relatively higher use-efficiency of nitrate-N (32.9-48.8%) than ammonium-N (28.4-36.8%). While in soybean ratio varied from 1.65 to 1.96 indicating that soybean preferentially absorbed ammonium form over nitrate form of N, resulting in higber use-efficency of the ammonium-N (42.4-54.5%) than the nitrate-N (21.4-33.1 %) of the applied fertilizer.
 
Publisher The Indian Journal of Agricultural Sciences
 
Contributor —
 
Date 2013-02-25
 
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/27774
 
Source The Indian Journal of Agricultural Sciences; Vol 68, No 11 (1998)
0019-5022
 
Language eng
 
Relation http://epubs.icar.org.in/ejournal/index.php/IJAgS/article/view/27774/12613
 
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