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Emcient management of fertilizer nitrogen in wet direct-seeded rice (Ovza sativa) in northwest India

Indian Agricultural Research Journals

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Title Emcient management of fertilizer nitrogen in wet direct-seeded rice (Ovza sativa) in northwest India
 
Creator SINGH, YADVINDER
GUPTA, R K
SINGH, BIJAY
GUPTA, S
 
Subject Direct seeded rice; Farmyard manure; Grain yield; Nitrogen management; N use efficiency;Polymer-coated urea
 
Description A field experiment was conducted during 2000-02 and 2004 to study the optimum rate, source and schedule of N application for wet-direct seeded rice (Oryza sativa L.) on a Typic Ustrochrept during the s u b e r monsoon (June- October) rainy seasons. The N-response of wet-direct seeded rice ranged from 80-120 kg /ha, beyond which the yields leveled off. Response to applied N was not influenced by farmyard manure application. Application of 120 kg Nlha in 3 equal split doses at 20,40 and 60 days after seeding gave maximum grain yield and N use efficiency of wet-direct seeded rice. Performance of polymer-coated urea applied in a single dose at seeding in wet-direct seeded rice was as good as urea applied in 4 split doses. Total N uptake and, the recovery and agronomic efficiencies of applied N were maximum at 80 kg Nlha. Grain yield of wet-direct seeded rice was on a par with that of transplanted rice.
 
Publisher The Indian Journal of Agricultural Sciences
 
Contributor —
 
Date 2011-01-10
 
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/3176
 
Source The Indian Journal of Agricultural Sciences; Vol 77, No 9 (2007)
0019-5022
 
Language eng
 
Relation http://epubs.icar.org.in/ejournal/index.php/IJAgS/article/view/3176/1235
 
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