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Development rate and growth duration of rice (Oryza sativa) in response to delayed transplanting

Indian Agricultural Research Journals

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Title Development rate and growth duration of rice (Oryza sativa) in response to delayed transplanting
 
Creator KRISHNAN, P
NAYAK, S K
 
Subject growth stages, growing degree-days, rice, Oryza sativa, seedling age, transplanting date, temperature
 
Description An experiment was conducted during 1994-95 at Cuttack on the effect of delayed transplanting on the rate ofdevelopment and duration of growth in rice (Oryza sativa L.) over 2 sets of seedlings differing in their age at the time oftransplanting on alluvial soil (haplaquept). Number of days and of growing degree-days to reach active tillering, panicleinitiation, flowering, milky white grain and 80% panicle ripe were computed. Yield, panicle weight and test weightwere measured, and straw yield and vegetative growth index were calculated. Correlations were calculated for thesevalues with number of days and with number of growing degree-days at each stage of development. In delayed transplanting,significant correlations occurred between yield factors and growing degree-days, rate of development andduration of growdL Number of days to reach each stage of development was significantly reduced by delayed transplanting,whereas there was no reduction in number of growing degree-days. On entry mean basis, neither number of accumu-.lated growing degree-days nor number of days was correlated with grain yield, straw yield or test weight. Both theparameters could be useful for predicting rate of development and duration of growth; however, since number of growingdegree-days is less variable throughout the season, its use is beneficial.
 
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/27680
 
Source The Indian Journal of Agricultural Sciences; Vol 68, No 9 (1998)
0019-5022
 
Language eng
 
Relation http://epubs.icar.org.in/ejournal/index.php/IJAgS/article/view/27680/12557
 
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