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Comparison of few statistical models describing castor (Ricinus communis) seed yield response to phosphate fertilizer

Indian Agricultural Research Journals

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Title Comparison of few statistical models describing castor (Ricinus communis) seed yield response to phosphate fertilizer
 
Creator MURTHY, I Y
ALIVELU, K
 
Subject Castor, Phosphate fertilization, Statistical models
 
Description Five statistical models, linear response and plateau (LRP), quadratic response and plateau (QRP), logistic, quadraticand square root were compared to describe castor seed yield response to phosphate fertilization under irrigated conditionsof Junagadh and S K Nagar regions. Adjusted R2 values explained the variability in castor seed yield response to Pfertilization, but the optimum phosphorus (Pop) values calculated by these models varied greatly. Overall the QRP followed by LRP model fitted the data with less bias than the other models, and calculated Pop values for Junagadh and S K Nagar (37.1 and 25.6 kg/ha respectively) were comparable with the P doses reported in literature.  
 
Publisher The Indian Journal of Agricultural Sciences
 
Contributor —
 
Date 2013-02-11
 
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/27229
 
Source The Indian Journal of Agricultural Sciences; Vol 83, No 1 (2013)
0019-5022
 
Language eng
 
Relation http://epubs.icar.org.in/ejournal/index.php/IJAgS/article/view/27229/12388
 
Rights Copyright (c) 2014 The Indian Journal of Agricultural Sciences