The growth dynamics in Brachiaria species according to nitrogen dose and shade.
Autor(a) principal: | |
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Data de Publicação: | 2011 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
Texto Completo: | http://www.alice.cnptia.embrapa.br/alice/handle/doc/902199 https://doi.org/10.1590/S1516-35982011000200006 |
Resumo: | It was studied the effects of shading (0, 36 and 54%) and of four nitrogen doses (0, 50, 100 and 150 mg N/dm³ of soil) on the morphogenetic traits and on the tillering of grasses of Brachiaria genus (B. decumbens, B. ruziziensis and B. brizantha cv. Marandu and cv. Xaraes), cultivated in pots with 5 kg substrate. It was used a complete random design, in a 3 × 4 × 4 factorial scheme with three replications. Nitrogen promoted increase in leaf appearance rate and in average leaf blade length, whereas shading increased stem elongation rate. Leaf elongation rate and tillering varied with the interaction among shading percentages and nitrogen doses. Shading increased response efficiency of leaf elongation rate to nitrogen doses, but reduced for tillering, evidencing priority existing tillering growth in detriment to appearance of new tillers when there is light restriction for the plants. Phenotypic adjustments, in response to light reduction, indicate that the studied grasses present tolerance to moderate shading. |
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The growth dynamics in Brachiaria species according to nitrogen dose and shade.Silvopastoral systemBrachiaria BrizanthaBrachiaria DecumbensBrachiaria RuziziensismorphogenesistilleringIt was studied the effects of shading (0, 36 and 54%) and of four nitrogen doses (0, 50, 100 and 150 mg N/dm³ of soil) on the morphogenetic traits and on the tillering of grasses of Brachiaria genus (B. decumbens, B. ruziziensis and B. brizantha cv. Marandu and cv. Xaraes), cultivated in pots with 5 kg substrate. It was used a complete random design, in a 3 × 4 × 4 factorial scheme with three replications. Nitrogen promoted increase in leaf appearance rate and in average leaf blade length, whereas shading increased stem elongation rate. Leaf elongation rate and tillering varied with the interaction among shading percentages and nitrogen doses. Shading increased response efficiency of leaf elongation rate to nitrogen doses, but reduced for tillering, evidencing priority existing tillering growth in detriment to appearance of new tillers when there is light restriction for the plants. Phenotypic adjustments, in response to light reduction, indicate that the studied grasses present tolerance to moderate shading.DOMINGOS SAVIO CAMPOS PACIULLO, CNPGL; PRISCILLA BELIGOLI FERNANDES, UFRRJ; CARLOS AUGUSTO DE MIRANDA GOMIDE, CNPGL; CARLOS RENATO TAVARES DE CASTRO, CNPGL; FAUSTO DE SOUZA SOBRINHO, CNPGL; CARLOS AUGUSTO BRANDÃO DE CARVALHO, UFRRJ.PACIULLO, D. S. C.FERNANDES, P. B.GOMIDE, C. A. de M.CASTRO, C. R. T. deSOUZA SOBRINHO, F. deCARVALHO, C. A. B. de2022-07-01T10:19:58Z2022-07-01T10:19:58Z2011-10-042011info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleRevista Brasileira de Zootecnia, v. 40, n. 2, p. 270-276, 2011.http://www.alice.cnptia.embrapa.br/alice/handle/doc/902199https://doi.org/10.1590/S1516-35982011000200006enginfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPA2022-07-01T10:20:07Zoai:www.alice.cnptia.embrapa.br:doc/902199Repositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestopendoar:21542022-07-01T10:20:07falseRepositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestcg-riaa@embrapa.bropendoar:21542022-07-01T10:20:07Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
The growth dynamics in Brachiaria species according to nitrogen dose and shade. |
title |
The growth dynamics in Brachiaria species according to nitrogen dose and shade. |
spellingShingle |
The growth dynamics in Brachiaria species according to nitrogen dose and shade. PACIULLO, D. S. C. Silvopastoral system Brachiaria Brizantha Brachiaria Decumbens Brachiaria Ruziziensis morphogenesis tillering |
title_short |
The growth dynamics in Brachiaria species according to nitrogen dose and shade. |
title_full |
The growth dynamics in Brachiaria species according to nitrogen dose and shade. |
title_fullStr |
The growth dynamics in Brachiaria species according to nitrogen dose and shade. |
title_full_unstemmed |
The growth dynamics in Brachiaria species according to nitrogen dose and shade. |
title_sort |
The growth dynamics in Brachiaria species according to nitrogen dose and shade. |
author |
PACIULLO, D. S. C. |
author_facet |
PACIULLO, D. S. C. FERNANDES, P. B. GOMIDE, C. A. de M. CASTRO, C. R. T. de SOUZA SOBRINHO, F. de CARVALHO, C. A. B. de |
author_role |
author |
author2 |
FERNANDES, P. B. GOMIDE, C. A. de M. CASTRO, C. R. T. de SOUZA SOBRINHO, F. de CARVALHO, C. A. B. de |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
DOMINGOS SAVIO CAMPOS PACIULLO, CNPGL; PRISCILLA BELIGOLI FERNANDES, UFRRJ; CARLOS AUGUSTO DE MIRANDA GOMIDE, CNPGL; CARLOS RENATO TAVARES DE CASTRO, CNPGL; FAUSTO DE SOUZA SOBRINHO, CNPGL; CARLOS AUGUSTO BRANDÃO DE CARVALHO, UFRRJ. |
dc.contributor.author.fl_str_mv |
PACIULLO, D. S. C. FERNANDES, P. B. GOMIDE, C. A. de M. CASTRO, C. R. T. de SOUZA SOBRINHO, F. de CARVALHO, C. A. B. de |
dc.subject.por.fl_str_mv |
Silvopastoral system Brachiaria Brizantha Brachiaria Decumbens Brachiaria Ruziziensis morphogenesis tillering |
topic |
Silvopastoral system Brachiaria Brizantha Brachiaria Decumbens Brachiaria Ruziziensis morphogenesis tillering |
description |
It was studied the effects of shading (0, 36 and 54%) and of four nitrogen doses (0, 50, 100 and 150 mg N/dm³ of soil) on the morphogenetic traits and on the tillering of grasses of Brachiaria genus (B. decumbens, B. ruziziensis and B. brizantha cv. Marandu and cv. Xaraes), cultivated in pots with 5 kg substrate. It was used a complete random design, in a 3 × 4 × 4 factorial scheme with three replications. Nitrogen promoted increase in leaf appearance rate and in average leaf blade length, whereas shading increased stem elongation rate. Leaf elongation rate and tillering varied with the interaction among shading percentages and nitrogen doses. Shading increased response efficiency of leaf elongation rate to nitrogen doses, but reduced for tillering, evidencing priority existing tillering growth in detriment to appearance of new tillers when there is light restriction for the plants. Phenotypic adjustments, in response to light reduction, indicate that the studied grasses present tolerance to moderate shading. |
publishDate |
2011 |
dc.date.none.fl_str_mv |
2011-10-04 2011 2022-07-01T10:19:58Z 2022-07-01T10:19:58Z |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
Revista Brasileira de Zootecnia, v. 40, n. 2, p. 270-276, 2011. http://www.alice.cnptia.embrapa.br/alice/handle/doc/902199 https://doi.org/10.1590/S1516-35982011000200006 |
identifier_str_mv |
Revista Brasileira de Zootecnia, v. 40, n. 2, p. 270-276, 2011. |
url |
http://www.alice.cnptia.embrapa.br/alice/handle/doc/902199 https://doi.org/10.1590/S1516-35982011000200006 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
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EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
collection |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
repository.name.fl_str_mv |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
cg-riaa@embrapa.br |
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1794503525476073472 |