Effects of different spacings on the allometric growth of rubber nursery seedlings

Detalhes bibliográficos
Autor(a) principal: Cid, Luis Pedro Barrueto
Data de Publicação: 2014
Outros Autores: Rossetti, Adroaldo Guimarães
Tipo de documento: Artigo
Idioma: por
Título da fonte: Pesquisa Agropecuária Brasileira (Online)
Texto Completo: https://seer.sct.embrapa.br/index.php/pab/article/view/15985
Resumo: In a rubber nursery study seven spacings were evaluated, comparing increase in stem height and stem diameter measured at 5 cm from the soil, on seedlings derived from seeds of native rubber trees (Hevea spp.). No statistical difference was found among the allometric constants (Id used to compare the spacings. In all cases, the k values were superior than 1.0 showing the greater tendency to increase in stem height rather than in diameter. Although the stem growth in diameter was observed in all the leaf phenological stages, they were more evident in stages B and D of the canopy development. For the selection of a nursery spacing, economical considerations of cost/benefit and field practices are therefore more important factors to be taken into account than growth alone.
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spelling Effects of different spacings on the allometric growth of rubber nursery seedlingsEfeito de diferentes espaçamentos sobre o crescimento alométrico de plantas de seringueirastem diameter; seeds; phenological statediâmetro de caule; sementes; estádio fenológicoIn a rubber nursery study seven spacings were evaluated, comparing increase in stem height and stem diameter measured at 5 cm from the soil, on seedlings derived from seeds of native rubber trees (Hevea spp.). No statistical difference was found among the allometric constants (Id used to compare the spacings. In all cases, the k values were superior than 1.0 showing the greater tendency to increase in stem height rather than in diameter. Although the stem growth in diameter was observed in all the leaf phenological stages, they were more evident in stages B and D of the canopy development. For the selection of a nursery spacing, economical considerations of cost/benefit and field practices are therefore more important factors to be taken into account than growth alone.Foram testados sete espaçamentos, visando comparar o crescimento em altura e diâmetro de caule, a 5 cm do solo, em seringueiras (Hevea spp.), enviveiradas e originadas de sementes provenientes de seringais nativos. A aplicação da análise alométrica no estudo não revelou diferença estatisticamente significativa entre as constantes alométricas (k) nos espaçamentos testados. Foi verificado em todos os casos que os valores de k foram superiores a 1,0, revelando, com isso, tendência a crescer mais em altura que em diâmetro. Constatou-se, também, que os aumentos de diâmetro, embora hajam ocorridos em todos os estádios fenológicos, foram mais acentuados nos estádios B e D da folhagem. Conclui-se que, para a escolha de um ou outro espaçamento, fundamentos, tais como relação custo/benefício e tratos culturais, devem ser mais relevantes que o fator crescimento.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraCid, Luis Pedro BarruetoRossetti, Adroaldo Guimarães2014-04-16info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/15985Pesquisa Agropecuaria Brasileira; v.17, n.7, jul. 1982; 1035-1039Pesquisa Agropecuária Brasileira; v.17, n.7, jul. 1982; 1035-10391678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/15985/10109info:eu-repo/semantics/openAccess2014-04-16T16:21:37Zoai:ojs.seer.sct.embrapa.br:article/15985Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-04-16T16:21:37Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Effects of different spacings on the allometric growth of rubber nursery seedlings
Efeito de diferentes espaçamentos sobre o crescimento alométrico de plantas de seringueira
title Effects of different spacings on the allometric growth of rubber nursery seedlings
spellingShingle Effects of different spacings on the allometric growth of rubber nursery seedlings
Cid, Luis Pedro Barrueto
stem diameter; seeds; phenological state
diâmetro de caule; sementes; estádio fenológico
title_short Effects of different spacings on the allometric growth of rubber nursery seedlings
title_full Effects of different spacings on the allometric growth of rubber nursery seedlings
title_fullStr Effects of different spacings on the allometric growth of rubber nursery seedlings
title_full_unstemmed Effects of different spacings on the allometric growth of rubber nursery seedlings
title_sort Effects of different spacings on the allometric growth of rubber nursery seedlings
author Cid, Luis Pedro Barrueto
author_facet Cid, Luis Pedro Barrueto
Rossetti, Adroaldo Guimarães
author_role author
author2 Rossetti, Adroaldo Guimarães
author2_role author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv Cid, Luis Pedro Barrueto
Rossetti, Adroaldo Guimarães
dc.subject.por.fl_str_mv stem diameter; seeds; phenological state
diâmetro de caule; sementes; estádio fenológico
topic stem diameter; seeds; phenological state
diâmetro de caule; sementes; estádio fenológico
description In a rubber nursery study seven spacings were evaluated, comparing increase in stem height and stem diameter measured at 5 cm from the soil, on seedlings derived from seeds of native rubber trees (Hevea spp.). No statistical difference was found among the allometric constants (Id used to compare the spacings. In all cases, the k values were superior than 1.0 showing the greater tendency to increase in stem height rather than in diameter. Although the stem growth in diameter was observed in all the leaf phenological stages, they were more evident in stages B and D of the canopy development. For the selection of a nursery spacing, economical considerations of cost/benefit and field practices are therefore more important factors to be taken into account than growth alone.
publishDate 2014
dc.date.none.fl_str_mv 2014-04-16
dc.type.none.fl_str_mv
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 https://seer.sct.embrapa.br/index.php/pab/article/view/15985
url https://seer.sct.embrapa.br/index.php/pab/article/view/15985
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/15985/10109
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 Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
dc.source.none.fl_str_mv Pesquisa Agropecuaria Brasileira; v.17, n.7, jul. 1982; 1035-1039
Pesquisa Agropecuária Brasileira; v.17, n.7, jul. 1982; 1035-1039
1678-3921
0100-104x
reponame:Pesquisa Agropecuária Brasileira (Online)
instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron:EMBRAPA
instname_str Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron_str EMBRAPA
institution EMBRAPA
reponame_str Pesquisa Agropecuária Brasileira (Online)
collection Pesquisa Agropecuária Brasileira (Online)
repository.name.fl_str_mv Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
repository.mail.fl_str_mv pab@sct.embrapa.br || sct.pab@embrapa.br
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