Biomass flow in massai grass fertilized with nitrogen under intermittent stocking grazing with sheep.

Detalhes bibliográficos
Autor(a) principal: LOPES, M. N.
Data de Publicação: 2013
Outros Autores: CÂNDIDO, M. J. D., POMPEU, R. C. F. F., SILVA, R. G. da, CARVALHO, T. C. F. de, SOMBRA, W. A., MORAIS NETO, L. B. de, PEIXOTO, M. J. A.
Tipo de documento: Artigo
Idioma: por
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/955879
http://dx.doi.org/10.1590/S1516-35982013000100003
Resumo: Abstract: This study evaluated the biomass flow of massai grass in regrowth subjected to different nitrogen levels (control - no fertilization; 400; 800; and 1200 N kg ha-1year-1) and under rotational stocking with sheep, in a completely randomized design with repeated measures over time. The leaf elongation rate increased with increasing nitrogen levels (N) and the fourth grazing cycle presented a lower value compared with the others. The stem elongation rate responded linearly with increasing levels of N, but it was not influenced by grazing cycles. The senescence rate of leaves remaining before grazing and after grazing were not influenced by the nitrogen fertilization or amended with successive grazing cycles. The phyllochron was influenced only by the nitrogen fertilization, with a decreasing linear response with nitrogen levels. Quadratic response was observed for the average length of leaves with increasing N levels and the grazing cycle 4 presented the lowest value for this variable. For each kilogram N ha-1 year-1, increases of 0.161 and 0.1604 kg ha-1 day-1 were verified in the herbage growth and accumulation rates, respectively. Nitrogen fertilization favors the biomass flow of massai grass, promoting an expressive increase in the production and accumulation of forage.
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spelling Biomass flow in massai grass fertilized with nitrogen under intermittent stocking grazing with sheep.Panicum infestumFluxo de biomassaCapim massaiNitrogen fertilizationOvinoFixação de nitrogênioMorfogênesePanicum maximumPastejoFertilizante nitrogenadoSheepMorphogenesisGrazingAbstract: This study evaluated the biomass flow of massai grass in regrowth subjected to different nitrogen levels (control - no fertilization; 400; 800; and 1200 N kg ha-1year-1) and under rotational stocking with sheep, in a completely randomized design with repeated measures over time. The leaf elongation rate increased with increasing nitrogen levels (N) and the fourth grazing cycle presented a lower value compared with the others. The stem elongation rate responded linearly with increasing levels of N, but it was not influenced by grazing cycles. The senescence rate of leaves remaining before grazing and after grazing were not influenced by the nitrogen fertilization or amended with successive grazing cycles. The phyllochron was influenced only by the nitrogen fertilization, with a decreasing linear response with nitrogen levels. Quadratic response was observed for the average length of leaves with increasing N levels and the grazing cycle 4 presented the lowest value for this variable. For each kilogram N ha-1 year-1, increases of 0.161 and 0.1604 kg ha-1 day-1 were verified in the herbage growth and accumulation rates, respectively. Nitrogen fertilization favors the biomass flow of massai grass, promoting an expressive increase in the production and accumulation of forage.Marcos Neves Lopes, Universidade Federal do Ceará (UFC) - Fortaleza, CE.; Magno José Duarte Cândido, UFC - Fortaleza, CE; ROBERTO CLAUDIO FERNANDES F POMPEU, CNPC; Rodrigo Gregório da Silva, Instituto Federal de Educação, Ciência e Tecnologia (IFCE), Campus Avançado do Tauá - Tauá, CE.; Thaíse Cristine Ferreira de Carvalho, IFCE - Tauá, CE.; Weberte Alan Sombra, UFC - Fortaleza, CE; Luiz Barreto de Morais Neto, UFC - Fortaleza, CE; Márcio José Alves Peixoto, Secretaria do Desenvolvimento Agrário do Ceará (SDA) - Fortaleza, CE.LOPES, M. N.CÂNDIDO, M. J. D.POMPEU, R. C. F. F.SILVA, R. G. daCARVALHO, T. C. F. deSOMBRA, W. A.MORAIS NETO, L. B. dePEIXOTO, M. J. A.2013-04-15T11:11:11Z2013-04-15T11:11:11Z2013-04-1520132015-04-20T11:11:11Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleRevista Brasileira de Zootecnia, Viçosa, MG, v. 42, n. 1, p. 13-21, 2013.http://www.alice.cnptia.embrapa.br/alice/handle/doc/955879http://dx.doi.org/10.1590/S1516-35982013000100003porinfo: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:EMBRAPA2017-08-15T23:55:22Zoai:www.alice.cnptia.embrapa.br:doc/955879Repositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestopendoar:21542017-08-15T23:55:22falseRepositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestcg-riaa@embrapa.bropendoar:21542017-08-15T23:55:22Repositório 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 Biomass flow in massai grass fertilized with nitrogen under intermittent stocking grazing with sheep.
title Biomass flow in massai grass fertilized with nitrogen under intermittent stocking grazing with sheep.
spellingShingle Biomass flow in massai grass fertilized with nitrogen under intermittent stocking grazing with sheep.
LOPES, M. N.
Panicum infestum
Fluxo de biomassa
Capim massai
Nitrogen fertilization
Ovino
Fixação de nitrogênio
Morfogênese
Panicum maximum
Pastejo
Fertilizante nitrogenado
Sheep
Morphogenesis
Grazing
title_short Biomass flow in massai grass fertilized with nitrogen under intermittent stocking grazing with sheep.
title_full Biomass flow in massai grass fertilized with nitrogen under intermittent stocking grazing with sheep.
title_fullStr Biomass flow in massai grass fertilized with nitrogen under intermittent stocking grazing with sheep.
title_full_unstemmed Biomass flow in massai grass fertilized with nitrogen under intermittent stocking grazing with sheep.
title_sort Biomass flow in massai grass fertilized with nitrogen under intermittent stocking grazing with sheep.
author LOPES, M. N.
author_facet LOPES, M. N.
CÂNDIDO, M. J. D.
POMPEU, R. C. F. F.
SILVA, R. G. da
CARVALHO, T. C. F. de
SOMBRA, W. A.
MORAIS NETO, L. B. de
PEIXOTO, M. J. A.
author_role author
author2 CÂNDIDO, M. J. D.
POMPEU, R. C. F. F.
SILVA, R. G. da
CARVALHO, T. C. F. de
SOMBRA, W. A.
MORAIS NETO, L. B. de
PEIXOTO, M. J. A.
author2_role author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Marcos Neves Lopes, Universidade Federal do Ceará (UFC) - Fortaleza, CE.; Magno José Duarte Cândido, UFC - Fortaleza, CE; ROBERTO CLAUDIO FERNANDES F POMPEU, CNPC; Rodrigo Gregório da Silva, Instituto Federal de Educação, Ciência e Tecnologia (IFCE), Campus Avançado do Tauá - Tauá, CE.; Thaíse Cristine Ferreira de Carvalho, IFCE - Tauá, CE.; Weberte Alan Sombra, UFC - Fortaleza, CE; Luiz Barreto de Morais Neto, UFC - Fortaleza, CE; Márcio José Alves Peixoto, Secretaria do Desenvolvimento Agrário do Ceará (SDA) - Fortaleza, CE.
dc.contributor.author.fl_str_mv LOPES, M. N.
CÂNDIDO, M. J. D.
POMPEU, R. C. F. F.
SILVA, R. G. da
CARVALHO, T. C. F. de
SOMBRA, W. A.
MORAIS NETO, L. B. de
PEIXOTO, M. J. A.
dc.subject.por.fl_str_mv Panicum infestum
Fluxo de biomassa
Capim massai
Nitrogen fertilization
Ovino
Fixação de nitrogênio
Morfogênese
Panicum maximum
Pastejo
Fertilizante nitrogenado
Sheep
Morphogenesis
Grazing
topic Panicum infestum
Fluxo de biomassa
Capim massai
Nitrogen fertilization
Ovino
Fixação de nitrogênio
Morfogênese
Panicum maximum
Pastejo
Fertilizante nitrogenado
Sheep
Morphogenesis
Grazing
description Abstract: This study evaluated the biomass flow of massai grass in regrowth subjected to different nitrogen levels (control - no fertilization; 400; 800; and 1200 N kg ha-1year-1) and under rotational stocking with sheep, in a completely randomized design with repeated measures over time. The leaf elongation rate increased with increasing nitrogen levels (N) and the fourth grazing cycle presented a lower value compared with the others. The stem elongation rate responded linearly with increasing levels of N, but it was not influenced by grazing cycles. The senescence rate of leaves remaining before grazing and after grazing were not influenced by the nitrogen fertilization or amended with successive grazing cycles. The phyllochron was influenced only by the nitrogen fertilization, with a decreasing linear response with nitrogen levels. Quadratic response was observed for the average length of leaves with increasing N levels and the grazing cycle 4 presented the lowest value for this variable. For each kilogram N ha-1 year-1, increases of 0.161 and 0.1604 kg ha-1 day-1 were verified in the herbage growth and accumulation rates, respectively. Nitrogen fertilization favors the biomass flow of massai grass, promoting an expressive increase in the production and accumulation of forage.
publishDate 2013
dc.date.none.fl_str_mv 2013-04-15T11:11:11Z
2013-04-15T11:11:11Z
2013-04-15
2013
2015-04-20T11:11:11Z
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, Viçosa, MG, v. 42, n. 1, p. 13-21, 2013.
http://www.alice.cnptia.embrapa.br/alice/handle/doc/955879
http://dx.doi.org/10.1590/S1516-35982013000100003
identifier_str_mv Revista Brasileira de Zootecnia, Viçosa, MG, v. 42, n. 1, p. 13-21, 2013.
url http://www.alice.cnptia.embrapa.br/alice/handle/doc/955879
http://dx.doi.org/10.1590/S1516-35982013000100003
dc.language.iso.fl_str_mv por
language por
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
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instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron:EMBRAPA
instname_str Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron_str 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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