Biomass flow in massai grass fertilized with nitrogen under intermittent stocking grazing with sheep.
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , , , , , , |
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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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 |
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 |
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Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
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EMBRAPA |
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EMBRAPA |
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Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
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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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1794503378953306112 |