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Effect of nitrogen levels on pattern of incremental biomass partitioning in rice (Oryza sativa) at different growth stages

Indian Agricultural Research Journals

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Title Effect of nitrogen levels on pattern of incremental biomass partitioning in rice (Oryza sativa) at different growth stages
 
Creator KRISHNAN, P
SWAIN, P
NAYAK, S K
 
Subject biomass partitioning, growth stages, N responsiveness, rice, Oryza sativa
 
Description A study was conducted during 1994-95 to changes in dry weight with time of each aerial component and new incremental biomass as being partitioned into them in 2 rice (Oryza sativa L.) varieties, tall 'Swarnaprabha' and medium tall 'IR 36' at 5 different levels of N, viz 30,60,90,120 and 150 kg N/ha at 10 days interval. Nitrogen levels influenced the growth of all aerial components of the plant as well as the partitioning of dry-matter at different developmental stages. Partitioning of dry-matter of leaves was maximum (0.526) during vegetative stage, while it attained a maximum value of 0.75 for stem during panicle-initiation stage. The N-responsive 'IR 36' rice having high leaf N uptake (6.06 g N/m2 average of all samplings) had higher partitioning coefficient to leaves (0.53) than that to the stem (0.47) and the converse was true with low-N responsive 'Swarnaprabha' rice.
 
Publisher The Indian Journal of Agricultural Sciences
 
Contributor —
 
Date 2013-02-21
 
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/27462
 
Source The Indian Journal of Agricultural Sciences; Vol 68, No 4 (1998)
0019-5022
 
Language eng
 
Relation http://epubs.icar.org.in/ejournal/index.php/IJAgS/article/view/27462/12466
 
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