Above ground pruning, aiming better quality of seedlings of Pinus taeda, in Caçador, SC

Detalhes bibliográficos
Autor(a) principal: Téo, Saulo Jorge
Data de Publicação: 2014
Outros Autores: Marcon, Alan, da Costa, Reinaldo Hoinacki
Tipo de documento: Artigo
Idioma: por
Título da fonte: Pesquisa Florestal Brasileira (Online)
Texto Completo: https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/468
Resumo: The objective of this paper was to evaluate the effects caused by the above ground pruning over the survival, height (h), neck diameter (dn) and h/dn relation, of Pinus taeda L. seedlings, in the municipal district of Caçador, Santa Catarina State, Brazil, aiming to obtain seedlings of better quality. Six different types and intensities of pruning were tested. The data were analyzed by the variances homogeneity test (Bartlett’s test), variance analysis (ANOVA) and, by the Tukey’s test of means comparison (α = 5%). Sixty days after the experiment installation, there was no seedlings mortality ; the removal of the upper portion of the seedlings showed abundant formation of side shoots, significant decrease of seedling heights and h/dn relation, improving the quality pattern of the seedlings. On the other hand, the removal of the lower portion of seedlings leaves caused significant increase of heights, but did not affect the h/dn relation. None of the treatments resulted in significant increase in neck diameter. However, the most intensive above ground pruning (upper portion removal + removal of the 2/3 of the lower portion of leaves) caused significant reduction of the neck diameter and, consequently, of the seedlings quality.
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spelling Above ground pruning, aiming better quality of seedlings of Pinus taeda, in Caçador, SCPoda da parte aérea, visando melhor qualidade de mudas de Pinus taeda, em Caçador, SCIntensidade de podaRelação h/dMortalidadePruning intensityh/dn relationMortalityThe objective of this paper was to evaluate the effects caused by the above ground pruning over the survival, height (h), neck diameter (dn) and h/dn relation, of Pinus taeda L. seedlings, in the municipal district of Caçador, Santa Catarina State, Brazil, aiming to obtain seedlings of better quality. Six different types and intensities of pruning were tested. The data were analyzed by the variances homogeneity test (Bartlett’s test), variance analysis (ANOVA) and, by the Tukey’s test of means comparison (α = 5%). Sixty days after the experiment installation, there was no seedlings mortality ; the removal of the upper portion of the seedlings showed abundant formation of side shoots, significant decrease of seedling heights and h/dn relation, improving the quality pattern of the seedlings. On the other hand, the removal of the lower portion of seedlings leaves caused significant increase of heights, but did not affect the h/dn relation. None of the treatments resulted in significant increase in neck diameter. However, the most intensive above ground pruning (upper portion removal + removal of the 2/3 of the lower portion of leaves) caused significant reduction of the neck diameter and, consequently, of the seedlings quality.O objetivo desta pesquisa foi avaliar os efeitos da poda da parte aérea sobre a sobrevivência, altura (h), diâmetro de colo (dc) e relação h/dc, de mudas de Pinus taeda L., no Município de Caçador, SC, visando obter mudas de melhor qualidade. Foram testados seis diferentes tipos e intensidades de podas. Os dados foram submetidos ao teste de homogeneidade das variâncias (Teste de Bartlett), à análise de variâncias (ANOVA) e ao teste de comparação de médias de Tukey (α = 5%). Aos 60 dias após a instalação do experimento, não houve mortalidade de mudas. A retirada da porção apical das mudas resultou em formação de brotações laterais, diminuição significativa das alturas e da relação h/dc das mudas, melhorando o padrão de qualidade das mudas. Por outro lado, a retirada das acículas na porção inferior das mudas causou aumento significativo das alturas, mas não afetou a relação h/dc. Nenhum dos tratamentos resultou em aumento significativo do diâmetro de colo. Entretanto, a poda mais severa da parte aérea (corte da porção apical + remoção de 2/3 das acículas) causou redução significativa do diâmetro de colo e, consequentemente, da qualidade das mudas.Embrapa Florestas2014-04-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/46810.4336/2014.pfb.34.77.468Pesquisa Florestal Brasileira; v. 34 n. 77 (2014): jan./mar.; 57-62Pesquisa Florestal Brasileira; Vol. 34 No. 77 (2014): jan./mar.; 57-621983-26051809-3647reponame:Pesquisa Florestal Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/468/348Téo, Saulo JorgeMarcon, Alanda Costa, Reinaldo Hoinackiinfo:eu-repo/semantics/openAccess2017-04-28T12:47:45Zoai:pfb.cnpf.embrapa.br/pfb:article/468Revistahttps://pfb.cnpf.embrapa.br/pfb/index.php/pfb/PUBhttps://pfb.cnpf.embrapa.br/pfb/index.php/pfb/oaipfb@embrapa.br || revista.pfb@gmail.com || patricia.mattos@embrapa.br1983-26051809-3647opendoar:2017-04-28T12:47:45Pesquisa Florestal Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Above ground pruning, aiming better quality of seedlings of Pinus taeda, in Caçador, SC
Poda da parte aérea, visando melhor qualidade de mudas de Pinus taeda, em Caçador, SC
title Above ground pruning, aiming better quality of seedlings of Pinus taeda, in Caçador, SC
spellingShingle Above ground pruning, aiming better quality of seedlings of Pinus taeda, in Caçador, SC
Téo, Saulo Jorge
Intensidade de poda
Relação h/d
Mortalidade
Pruning intensity
h/dn relation
Mortality
title_short Above ground pruning, aiming better quality of seedlings of Pinus taeda, in Caçador, SC
title_full Above ground pruning, aiming better quality of seedlings of Pinus taeda, in Caçador, SC
title_fullStr Above ground pruning, aiming better quality of seedlings of Pinus taeda, in Caçador, SC
title_full_unstemmed Above ground pruning, aiming better quality of seedlings of Pinus taeda, in Caçador, SC
title_sort Above ground pruning, aiming better quality of seedlings of Pinus taeda, in Caçador, SC
author Téo, Saulo Jorge
author_facet Téo, Saulo Jorge
Marcon, Alan
da Costa, Reinaldo Hoinacki
author_role author
author2 Marcon, Alan
da Costa, Reinaldo Hoinacki
author2_role author
author
dc.contributor.author.fl_str_mv Téo, Saulo Jorge
Marcon, Alan
da Costa, Reinaldo Hoinacki
dc.subject.por.fl_str_mv Intensidade de poda
Relação h/d
Mortalidade
Pruning intensity
h/dn relation
Mortality
topic Intensidade de poda
Relação h/d
Mortalidade
Pruning intensity
h/dn relation
Mortality
description The objective of this paper was to evaluate the effects caused by the above ground pruning over the survival, height (h), neck diameter (dn) and h/dn relation, of Pinus taeda L. seedlings, in the municipal district of Caçador, Santa Catarina State, Brazil, aiming to obtain seedlings of better quality. Six different types and intensities of pruning were tested. The data were analyzed by the variances homogeneity test (Bartlett’s test), variance analysis (ANOVA) and, by the Tukey’s test of means comparison (α = 5%). Sixty days after the experiment installation, there was no seedlings mortality ; the removal of the upper portion of the seedlings showed abundant formation of side shoots, significant decrease of seedling heights and h/dn relation, improving the quality pattern of the seedlings. On the other hand, the removal of the lower portion of seedlings leaves caused significant increase of heights, but did not affect the h/dn relation. None of the treatments resulted in significant increase in neck diameter. However, the most intensive above ground pruning (upper portion removal + removal of the 2/3 of the lower portion of leaves) caused significant reduction of the neck diameter and, consequently, of the seedlings quality.
publishDate 2014
dc.date.none.fl_str_mv 2014-04-04
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://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/468
10.4336/2014.pfb.34.77.468
url https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/468
identifier_str_mv 10.4336/2014.pfb.34.77.468
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/468/348
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 Embrapa Florestas
publisher.none.fl_str_mv Embrapa Florestas
dc.source.none.fl_str_mv Pesquisa Florestal Brasileira; v. 34 n. 77 (2014): jan./mar.; 57-62
Pesquisa Florestal Brasileira; Vol. 34 No. 77 (2014): jan./mar.; 57-62
1983-2605
1809-3647
reponame:Pesquisa Florestal 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 Florestal Brasileira (Online)
collection Pesquisa Florestal Brasileira (Online)
repository.name.fl_str_mv Pesquisa Florestal Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
repository.mail.fl_str_mv pfb@embrapa.br || revista.pfb@gmail.com || patricia.mattos@embrapa.br
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