Estimate of Ageratum conyzoides leaf area using leaf blade linear measurements - DOI: 10.4025/actasciagron.v30i4.5311

Detalhes bibliográficos
Autor(a) principal: Bianco, Silvano
Data de Publicação: 2008
Outros Autores: Bianco, Matheus Saraiva, Carvalho, Leonardo Bianco de
Tipo de documento: Artigo
Idioma: por
Título da fonte: Acta Scientiarum. Agronomy (Online)
Texto Completo: http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/5311
Resumo: The aim of this research was to obtain a mathematical equation to estimate the leaf area of Ageratum conyzoides based on linear measures of its leaf blade. Correlation studies were done using real leaf area (Sf), leaf length (C) and the maximum leaf width (L), in about 200 leaf blades. The evaluated statistic models were: linear Y = a + bx; simple linear Y = bx; geometric Y = axb; and exponential Y = abx. The evaluated linear, exponential and geometric models can be used in the billygoat weed leaf area estimation. In the practical sense, the simple linear regression model is suggested using the C*L multiplication product and taking the linear coefficient equal to zero, because it showed weak alteration on sum of squares error and satisfactory residual analysis. Thus, an estimate of A. conyzoides leaf area can be obtained using the equation Sf = 0.6789*(C*L), with a determination coefficient of 0.8630.
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spelling Estimate of Ageratum conyzoides leaf area using leaf blade linear measurements - DOI: 10.4025/actasciagron.v30i4.5311Estimativa da área foliar de Ageratum conyzoides usando dimensões lineares do limbo foliar - DOI: 10.4025/actasciagron.v30i4.5311growth analysisweedbillygoat weedplanta daninhaanálise de crescimentomentrasto.The aim of this research was to obtain a mathematical equation to estimate the leaf area of Ageratum conyzoides based on linear measures of its leaf blade. Correlation studies were done using real leaf area (Sf), leaf length (C) and the maximum leaf width (L), in about 200 leaf blades. The evaluated statistic models were: linear Y = a + bx; simple linear Y = bx; geometric Y = axb; and exponential Y = abx. The evaluated linear, exponential and geometric models can be used in the billygoat weed leaf area estimation. In the practical sense, the simple linear regression model is suggested using the C*L multiplication product and taking the linear coefficient equal to zero, because it showed weak alteration on sum of squares error and satisfactory residual analysis. Thus, an estimate of A. conyzoides leaf area can be obtained using the equation Sf = 0.6789*(C*L), with a determination coefficient of 0.8630.Com o objetivo de obter uma equação matemática que, por meio de parâmetros lineares dimensionais das folhas, permita a estimativa da área foliar de Ageratum conyzoides, estudaram-se relações entre a área foliar real (Sf) e parâmetros dimensionais do limbo foliar, como o comprimento ao longo da nervura principal (C) e a largura máxima (L) perpendicular à nervura principal, em 200 limbos foliares. Foram utilizados os modelos estatísticos: linear Y = a + bx; linear simples Y = bx, geométrico Y = axb e exponencial Y = abx. Os modelos estatísticos lineares, exponenciais e geométricos obtidos podem ser usados para estimação da área foliar do mentrasto. Do ponto de vista prático, sugere-se optar pelo modelo linear simples, envolvendo o produto C*L, com coeficiente linear igual a 0, pois não altera expressivamente a soma de quadrados do resíduo e apresenta análise de resíduos satisfatória. A área foliar pode ser estimada, usando a equação de regressão Sf = 0,6789*(C*L), que equivale a tomar 67,89% do produto entre o comprimento ao longo da nervura principal e a largura máxima, com um coeficiente de determinação de 0,8630.Universidade Estadual de Maringá2008-10-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/531110.4025/actasciagron.v30i4.5311Acta Scientiarum. Agronomy; Vol 30 No 4 (2008); 519-523Acta Scientiarum. Agronomy; v. 30 n. 4 (2008); 519-5231807-86211679-9275reponame:Acta Scientiarum. Agronomy (Online)instname:Universidade Estadual de Maringá (UEM)instacron:UEMporhttp://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/5311/5311Bianco, SilvanoBianco, Matheus SaraivaCarvalho, Leonardo Bianco deinfo:eu-repo/semantics/openAccess2022-11-23T18:38:10Zoai:periodicos.uem.br/ojs:article/5311Revistahttp://www.periodicos.uem.br/ojs/index.php/ActaSciAgronPUBhttp://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/oaiactaagron@uem.br||actaagron@uem.br|| edamasio@uem.br1807-86211679-9275opendoar:2022-11-23T18:38:10Acta Scientiarum. Agronomy (Online) - Universidade Estadual de Maringá (UEM)false
dc.title.none.fl_str_mv Estimate of Ageratum conyzoides leaf area using leaf blade linear measurements - DOI: 10.4025/actasciagron.v30i4.5311
Estimativa da área foliar de Ageratum conyzoides usando dimensões lineares do limbo foliar - DOI: 10.4025/actasciagron.v30i4.5311
title Estimate of Ageratum conyzoides leaf area using leaf blade linear measurements - DOI: 10.4025/actasciagron.v30i4.5311
spellingShingle Estimate of Ageratum conyzoides leaf area using leaf blade linear measurements - DOI: 10.4025/actasciagron.v30i4.5311
Bianco, Silvano
growth analysis
weed
billygoat weed
planta daninha
análise de crescimento
mentrasto.
title_short Estimate of Ageratum conyzoides leaf area using leaf blade linear measurements - DOI: 10.4025/actasciagron.v30i4.5311
title_full Estimate of Ageratum conyzoides leaf area using leaf blade linear measurements - DOI: 10.4025/actasciagron.v30i4.5311
title_fullStr Estimate of Ageratum conyzoides leaf area using leaf blade linear measurements - DOI: 10.4025/actasciagron.v30i4.5311
title_full_unstemmed Estimate of Ageratum conyzoides leaf area using leaf blade linear measurements - DOI: 10.4025/actasciagron.v30i4.5311
title_sort Estimate of Ageratum conyzoides leaf area using leaf blade linear measurements - DOI: 10.4025/actasciagron.v30i4.5311
author Bianco, Silvano
author_facet Bianco, Silvano
Bianco, Matheus Saraiva
Carvalho, Leonardo Bianco de
author_role author
author2 Bianco, Matheus Saraiva
Carvalho, Leonardo Bianco de
author2_role author
author
dc.contributor.author.fl_str_mv Bianco, Silvano
Bianco, Matheus Saraiva
Carvalho, Leonardo Bianco de
dc.subject.por.fl_str_mv growth analysis
weed
billygoat weed
planta daninha
análise de crescimento
mentrasto.
topic growth analysis
weed
billygoat weed
planta daninha
análise de crescimento
mentrasto.
description The aim of this research was to obtain a mathematical equation to estimate the leaf area of Ageratum conyzoides based on linear measures of its leaf blade. Correlation studies were done using real leaf area (Sf), leaf length (C) and the maximum leaf width (L), in about 200 leaf blades. The evaluated statistic models were: linear Y = a + bx; simple linear Y = bx; geometric Y = axb; and exponential Y = abx. The evaluated linear, exponential and geometric models can be used in the billygoat weed leaf area estimation. In the practical sense, the simple linear regression model is suggested using the C*L multiplication product and taking the linear coefficient equal to zero, because it showed weak alteration on sum of squares error and satisfactory residual analysis. Thus, an estimate of A. conyzoides leaf area can be obtained using the equation Sf = 0.6789*(C*L), with a determination coefficient of 0.8630.
publishDate 2008
dc.date.none.fl_str_mv 2008-10-06
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/5311
10.4025/actasciagron.v30i4.5311
url http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/5311
identifier_str_mv 10.4025/actasciagron.v30i4.5311
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/5311/5311
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 Universidade Estadual de Maringá
publisher.none.fl_str_mv Universidade Estadual de Maringá
dc.source.none.fl_str_mv Acta Scientiarum. Agronomy; Vol 30 No 4 (2008); 519-523
Acta Scientiarum. Agronomy; v. 30 n. 4 (2008); 519-523
1807-8621
1679-9275
reponame:Acta Scientiarum. Agronomy (Online)
instname:Universidade Estadual de Maringá (UEM)
instacron:UEM
instname_str Universidade Estadual de Maringá (UEM)
instacron_str UEM
institution UEM
reponame_str Acta Scientiarum. Agronomy (Online)
collection Acta Scientiarum. Agronomy (Online)
repository.name.fl_str_mv Acta Scientiarum. Agronomy (Online) - Universidade Estadual de Maringá (UEM)
repository.mail.fl_str_mv actaagron@uem.br||actaagron@uem.br|| edamasio@uem.br
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