Model adjustment for estimating bell pepper leaf area index and dry mass accumulation as a function of degree days

Detalhes bibliográficos
Autor(a) principal: Carvalho, Daniel Fonseca
Data de Publicação: 2011
Outros Autores: Oliveira, Alexsandra Duarte de, Pereira, João Batista Alves
Tipo de documento: Artigo
Idioma: por
Título da fonte: Semina. Ciências Agrárias (Online)
Texto Completo: https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/1679-0359.2011v32n3p971
Resumo: This study was carried out at SIPA (Integrated Agroecological Production System), in Seropédica, RJ, Brazil, with the objective of generating models for characterizing variation and evolution of leaf area index (LAI) and total dry mass of Bell pepper as a function of degree days. Experimental design was of plots split in time, with three replications. The matematical models obtained by regression analysis on the basis of the significance of the coefficients, the F value in the variance analysis of regression, and higher determination coefficient (R2). Based on adjusted curves for LAI and dry mass and in their respective maximum values degree days is a viable methodology for determination of crop phenological stages. The values of LAI and biomass accumulated by the plants were not significantly different between tillage systems. Bell pepper needed a total of 1533 degree days for completing its productive cycle, with maximum dry mass accumulation occurring at 1059 and 1148 degree days for conventional and no till cropping, respectively.
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spelling Model adjustment for estimating bell pepper leaf area index and dry mass accumulation as a function of degree daysAjuste de modelos para estimativa do índice de área foliar e acúmulo de biomassa do pimentão em função de graus-diasCapsicum annuumGrowing curvesPhysiology.Capsicum annuumCurvas de crescimentoFisiologia.This study was carried out at SIPA (Integrated Agroecological Production System), in Seropédica, RJ, Brazil, with the objective of generating models for characterizing variation and evolution of leaf area index (LAI) and total dry mass of Bell pepper as a function of degree days. Experimental design was of plots split in time, with three replications. The matematical models obtained by regression analysis on the basis of the significance of the coefficients, the F value in the variance analysis of regression, and higher determination coefficient (R2). Based on adjusted curves for LAI and dry mass and in their respective maximum values degree days is a viable methodology for determination of crop phenological stages. The values of LAI and biomass accumulated by the plants were not significantly different between tillage systems. Bell pepper needed a total of 1533 degree days for completing its productive cycle, with maximum dry mass accumulation occurring at 1059 and 1148 degree days for conventional and no till cropping, respectively. O estudo conduzido no SIPA (Sistema Integrado de Produção Agroecológica), localizado no município de Seropédica-RJ, foi desenvolvido com o objetivo de gerar modelos para caracterizar a variação e evolução do índice de área foliar (IAF) e da biomassa total da cultura do pimentão em função dos graus-dias. A a4nálise foi realizada em esquema de parcelas subdivididas no tempo, com 3 repetições. Os modelos matemáticos obtidos por regressão foram escolhidos em função da significância dos coeficientes do modelo, do valor de F da analise de variância e do maior coeficiente de determinação (R2). As curvas ajustadas do IAF e biomassa e seus respectivos valores máximos confirmam que a metodologia dos graus-dias é viável para determinação dos estádios fenológicos da cultura. Os sistemas de plantio convencional e direto não foram significativamente diferentes entre si, em relação ao índice de área foliar e biomassa da cultura do pimentão. Foram necessários 1533 GDA para a cultura completar o ciclo produtivo, obtendo-se o máximo acúmulo de biomassa aos 1059 e 1148 GDA nos sistemas de plantio convencional e direto, respectivamente.UEL2011-08-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionPesquisa Empírica de Campoapplication/pdfhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/1679-0359.2011v32n3p97110.5433/1679-0359.2011v32n3p971Semina: Ciências Agrárias; Vol. 32 No. 3 (2011); 971-982Semina: Ciências Agrárias; v. 32 n. 3 (2011); 971-9821679-03591676-546Xreponame:Semina. Ciências Agrárias (Online)instname:Universidade Estadual de Londrina (UEL)instacron:UELporhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/1679-0359.2011v32n3p971/8371Carvalho, Daniel FonsecaOliveira, Alexsandra Duarte dePereira, João Batista Alvesinfo:eu-repo/semantics/openAccess2015-11-19T18:37:53Zoai:ojs.pkp.sfu.ca:article/4729Revistahttp://www.uel.br/revistas/uel/index.php/semagrariasPUBhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/oaisemina.agrarias@uel.br1679-03591676-546Xopendoar:2015-11-19T18:37:53Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)false
dc.title.none.fl_str_mv Model adjustment for estimating bell pepper leaf area index and dry mass accumulation as a function of degree days
Ajuste de modelos para estimativa do índice de área foliar e acúmulo de biomassa do pimentão em função de graus-dias
title Model adjustment for estimating bell pepper leaf area index and dry mass accumulation as a function of degree days
spellingShingle Model adjustment for estimating bell pepper leaf area index and dry mass accumulation as a function of degree days
Carvalho, Daniel Fonseca
Capsicum annuum
Growing curves
Physiology.
Capsicum annuum
Curvas de crescimento
Fisiologia.
title_short Model adjustment for estimating bell pepper leaf area index and dry mass accumulation as a function of degree days
title_full Model adjustment for estimating bell pepper leaf area index and dry mass accumulation as a function of degree days
title_fullStr Model adjustment for estimating bell pepper leaf area index and dry mass accumulation as a function of degree days
title_full_unstemmed Model adjustment for estimating bell pepper leaf area index and dry mass accumulation as a function of degree days
title_sort Model adjustment for estimating bell pepper leaf area index and dry mass accumulation as a function of degree days
author Carvalho, Daniel Fonseca
author_facet Carvalho, Daniel Fonseca
Oliveira, Alexsandra Duarte de
Pereira, João Batista Alves
author_role author
author2 Oliveira, Alexsandra Duarte de
Pereira, João Batista Alves
author2_role author
author
dc.contributor.author.fl_str_mv Carvalho, Daniel Fonseca
Oliveira, Alexsandra Duarte de
Pereira, João Batista Alves
dc.subject.por.fl_str_mv Capsicum annuum
Growing curves
Physiology.
Capsicum annuum
Curvas de crescimento
Fisiologia.
topic Capsicum annuum
Growing curves
Physiology.
Capsicum annuum
Curvas de crescimento
Fisiologia.
description This study was carried out at SIPA (Integrated Agroecological Production System), in Seropédica, RJ, Brazil, with the objective of generating models for characterizing variation and evolution of leaf area index (LAI) and total dry mass of Bell pepper as a function of degree days. Experimental design was of plots split in time, with three replications. The matematical models obtained by regression analysis on the basis of the significance of the coefficients, the F value in the variance analysis of regression, and higher determination coefficient (R2). Based on adjusted curves for LAI and dry mass and in their respective maximum values degree days is a viable methodology for determination of crop phenological stages. The values of LAI and biomass accumulated by the plants were not significantly different between tillage systems. Bell pepper needed a total of 1533 degree days for completing its productive cycle, with maximum dry mass accumulation occurring at 1059 and 1148 degree days for conventional and no till cropping, respectively.
publishDate 2011
dc.date.none.fl_str_mv 2011-08-10
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Pesquisa Empírica de Campo
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/1679-0359.2011v32n3p971
10.5433/1679-0359.2011v32n3p971
url https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/1679-0359.2011v32n3p971
identifier_str_mv 10.5433/1679-0359.2011v32n3p971
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/1679-0359.2011v32n3p971/8371
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv UEL
publisher.none.fl_str_mv UEL
dc.source.none.fl_str_mv Semina: Ciências Agrárias; Vol. 32 No. 3 (2011); 971-982
Semina: Ciências Agrárias; v. 32 n. 3 (2011); 971-982
1679-0359
1676-546X
reponame:Semina. Ciências Agrárias (Online)
instname:Universidade Estadual de Londrina (UEL)
instacron:UEL
instname_str Universidade Estadual de Londrina (UEL)
instacron_str UEL
institution UEL
reponame_str Semina. Ciências Agrárias (Online)
collection Semina. Ciências Agrárias (Online)
repository.name.fl_str_mv Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)
repository.mail.fl_str_mv semina.agrarias@uel.br
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