Above ground pruning, aiming better quality of seedlings of Pinus taeda, in Caçador, SC
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , |
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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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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1783370934186409984 |