Morphogenic parameters and productivity of grass-Pioneer subjected to nitrogen
| Autor(a) principal: | |
|---|---|
| Data de Publicação: | 2015 |
| Outros Autores: | , , , , , , , |
| Tipo de documento: | Artigo |
| Idioma: | por |
| Título da fonte: | Repositório Institucional da UNESP |
| Texto Completo: | http://www.uel.br/revistas/uel/index.php/semagrarias/article/view/15029 http://hdl.handle.net/11449/129206 |
Resumo: | Objective of this work by evaluating the effect of nitrogen on forage yield and morphogenesis of elephant grass cv. Pioneer. The experimental design was randomized blocks with five replications, totaling 20 experimental units. Treatments consisted of four nitrogen levels (100, 200, 300 and 400 kg ha(-1) yr(-1)). The experiment was conducted under irrigated conditions. Evaluative cuts were made at 50 cm soil with values of light interception (95%) without pre-defined intervals. It was observed that N fertilization increased significantly (P<0.05) the production of dry matter per hectare, leaf appearance rate (leaves days(-1)tiller(-1)), leaf elongation rate (cm tiller(-1) day(-1)) and stem elongation rate (cm day(-1)). The process of this forage senescence is accelerated with increasing doses of nitrogen and leaf appearance rate, thereby reducing the phyllochron. It required a study on the economic viability of higher doses of nitrogen in grazed elephant grass cv. Pioneer. |
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Morphogenic parameters and productivity of grass-Pioneer subjected to nitrogenParâmetros morfogênicos e produtividade do capim-Pioneiro submetido a doses de nitrogênioLeaf appearencePennisetum purpureumPhyllochronStem elongationAlongamento de colmoAparecimento foliarFilocronoPennisetum purpureumObjective of this work by evaluating the effect of nitrogen on forage yield and morphogenesis of elephant grass cv. Pioneer. The experimental design was randomized blocks with five replications, totaling 20 experimental units. Treatments consisted of four nitrogen levels (100, 200, 300 and 400 kg ha(-1) yr(-1)). The experiment was conducted under irrigated conditions. Evaluative cuts were made at 50 cm soil with values of light interception (95%) without pre-defined intervals. It was observed that N fertilization increased significantly (P<0.05) the production of dry matter per hectare, leaf appearance rate (leaves days(-1)tiller(-1)), leaf elongation rate (cm tiller(-1) day(-1)) and stem elongation rate (cm day(-1)). The process of this forage senescence is accelerated with increasing doses of nitrogen and leaf appearance rate, thereby reducing the phyllochron. It required a study on the economic viability of higher doses of nitrogen in grazed elephant grass cv. Pioneer.Objetivou-se por meio deste trabalho avaliar o efeito de nitrogênio sobre a morfogênese e rendimento forrageiro do capim-elefante cv. Pioneiro. O delineamento experimental utilizado foi em blocos casualizados com cinco repetições, totalizando 20 unidades experimentais. Os tratamentos corresponderam a quatro doses de nitrogênio (100, 200, 300 e 400 kg ha-1 ano-1). O experimento foi mantido sob condições irrigadas. Foram realizados cortes avaliativos a 50 cm do solo com valores de interceptação luminosa (95%) sem intervalos pré-definidos. Observou-se que a adubação nitrogenada aumentou significativamente (P<0,05) a produção de matéria seca por hectare, taxa de aparecimento foliar (folhas dias -1perfilho-1), taxa de alongamento foliar (cm folha-1 dia-1) e taxa de alongamento de colmo (cm perfilho -1 dia-1). O processo de senescência foliar nesta forrageira é acelerado com o aumento das doses de nitrogênio e taxa de aparecimento foliar, consequentemente reduzindo o filocrono. É necessário um estudo sobre a viabilidade econômica de doses mais elevadas de nitrogênio em pastos de capim elefante cv. Pioneiro.Fundação de Amparo à Pesquisa de Minas Gerais (FAPEMIG)Banco do Nordeste do BrasilUniversidade Estadual Paulista “Júlio de Mesquita Filho”, (UNESP) - Pós-Graduação em Zootecnia, Faculdade de Ciências Agrárias e VeterináriaUniversidade Estadual de Montes Claros (UNIMONTES), Zootecnia, Janaúba, MGUniversidade Estadual de Montes Claros (UNIMONTES), Departamento de Ciências Agrárias, Janaúba, MGEmpresa de Pesquisa Agropecuária de Minas Gerais (EPAMIG), Janaúba, MGUniversidade Estadual Paulista “Júlio de Mesquita Filho”, (UNESP) - Pós-Graduação em Zootecnia, Faculdade de Ciências Agrárias e VeterináriaUniv Estadual LondrinaUniversidade Estadual de Montes Claros (UNIMONTES)Universidade Estadual Paulista (Unesp)Empresa de Pesquisa Agropecuária de Minas Gerais (EPAMIG)Lobo, Bernado SilveiraJunqueira de Sales, Eleuza ClareteReis, Sidnei Tavares dosMoncao, Flavio Pinto [UNESP]Pereira, Daniela AlvesSampaio Rigueira, Joao PauloOliveira, Polyanna Mara deCosta Mota, Veronica Aparecida [UNESP]Alves, Dorismar David2015-10-21T20:35:47Z2015-10-21T20:35:47Z2015-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article3305-3318application/pdfhttp://www.uel.br/revistas/uel/index.php/semagrarias/article/view/15029Semina-ciencias Agrarias. Londrina: Univ Estadual Londrina, v. 35, n. 6, p. 3305-3318, 2015.1676-546Xhttp://hdl.handle.net/11449/12920610.5433/1679-0359.2014v35n6p3305WOS:000352022600037WOS000352022600037.pdfWeb of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPporSemina-ciencias Agrarias0.349info:eu-repo/semantics/openAccess2024-06-07T18:40:52Zoai:repositorio.unesp.br:11449/129206Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T16:47:35.538596Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
| dc.title.none.fl_str_mv |
Morphogenic parameters and productivity of grass-Pioneer subjected to nitrogen Parâmetros morfogênicos e produtividade do capim-Pioneiro submetido a doses de nitrogênio |
| title |
Morphogenic parameters and productivity of grass-Pioneer subjected to nitrogen |
| spellingShingle |
Morphogenic parameters and productivity of grass-Pioneer subjected to nitrogen Lobo, Bernado Silveira Leaf appearence Pennisetum purpureum Phyllochron Stem elongation Alongamento de colmo Aparecimento foliar Filocrono Pennisetum purpureum |
| title_short |
Morphogenic parameters and productivity of grass-Pioneer subjected to nitrogen |
| title_full |
Morphogenic parameters and productivity of grass-Pioneer subjected to nitrogen |
| title_fullStr |
Morphogenic parameters and productivity of grass-Pioneer subjected to nitrogen |
| title_full_unstemmed |
Morphogenic parameters and productivity of grass-Pioneer subjected to nitrogen |
| title_sort |
Morphogenic parameters and productivity of grass-Pioneer subjected to nitrogen |
| author |
Lobo, Bernado Silveira |
| author_facet |
Lobo, Bernado Silveira Junqueira de Sales, Eleuza Clarete Reis, Sidnei Tavares dos Moncao, Flavio Pinto [UNESP] Pereira, Daniela Alves Sampaio Rigueira, Joao Paulo Oliveira, Polyanna Mara de Costa Mota, Veronica Aparecida [UNESP] Alves, Dorismar David |
| author_role |
author |
| author2 |
Junqueira de Sales, Eleuza Clarete Reis, Sidnei Tavares dos Moncao, Flavio Pinto [UNESP] Pereira, Daniela Alves Sampaio Rigueira, Joao Paulo Oliveira, Polyanna Mara de Costa Mota, Veronica Aparecida [UNESP] Alves, Dorismar David |
| author2_role |
author author author author author author author author |
| dc.contributor.none.fl_str_mv |
Universidade Estadual de Montes Claros (UNIMONTES) Universidade Estadual Paulista (Unesp) Empresa de Pesquisa Agropecuária de Minas Gerais (EPAMIG) |
| dc.contributor.author.fl_str_mv |
Lobo, Bernado Silveira Junqueira de Sales, Eleuza Clarete Reis, Sidnei Tavares dos Moncao, Flavio Pinto [UNESP] Pereira, Daniela Alves Sampaio Rigueira, Joao Paulo Oliveira, Polyanna Mara de Costa Mota, Veronica Aparecida [UNESP] Alves, Dorismar David |
| dc.subject.por.fl_str_mv |
Leaf appearence Pennisetum purpureum Phyllochron Stem elongation Alongamento de colmo Aparecimento foliar Filocrono Pennisetum purpureum |
| topic |
Leaf appearence Pennisetum purpureum Phyllochron Stem elongation Alongamento de colmo Aparecimento foliar Filocrono Pennisetum purpureum |
| description |
Objective of this work by evaluating the effect of nitrogen on forage yield and morphogenesis of elephant grass cv. Pioneer. The experimental design was randomized blocks with five replications, totaling 20 experimental units. Treatments consisted of four nitrogen levels (100, 200, 300 and 400 kg ha(-1) yr(-1)). The experiment was conducted under irrigated conditions. Evaluative cuts were made at 50 cm soil with values of light interception (95%) without pre-defined intervals. It was observed that N fertilization increased significantly (P<0.05) the production of dry matter per hectare, leaf appearance rate (leaves days(-1)tiller(-1)), leaf elongation rate (cm tiller(-1) day(-1)) and stem elongation rate (cm day(-1)). The process of this forage senescence is accelerated with increasing doses of nitrogen and leaf appearance rate, thereby reducing the phyllochron. It required a study on the economic viability of higher doses of nitrogen in grazed elephant grass cv. Pioneer. |
| publishDate |
2015 |
| dc.date.none.fl_str_mv |
2015-10-21T20:35:47Z 2015-10-21T20:35:47Z 2015-01-01 |
| dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
| dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
| format |
article |
| status_str |
publishedVersion |
| dc.identifier.uri.fl_str_mv |
http://www.uel.br/revistas/uel/index.php/semagrarias/article/view/15029 Semina-ciencias Agrarias. Londrina: Univ Estadual Londrina, v. 35, n. 6, p. 3305-3318, 2015. 1676-546X http://hdl.handle.net/11449/129206 10.5433/1679-0359.2014v35n6p3305 WOS:000352022600037 WOS000352022600037.pdf |
| url |
http://www.uel.br/revistas/uel/index.php/semagrarias/article/view/15029 http://hdl.handle.net/11449/129206 |
| identifier_str_mv |
Semina-ciencias Agrarias. Londrina: Univ Estadual Londrina, v. 35, n. 6, p. 3305-3318, 2015. 1676-546X 10.5433/1679-0359.2014v35n6p3305 WOS:000352022600037 WOS000352022600037.pdf |
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por |
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por |
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Semina-ciencias Agrarias 0.349 |
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info:eu-repo/semantics/openAccess |
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openAccess |
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3305-3318 application/pdf |
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Univ Estadual Londrina |
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Univ Estadual Londrina |
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Web of Science reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
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Universidade Estadual Paulista (UNESP) |
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UNESP |
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UNESP |
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Repositório Institucional da UNESP |
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Repositório Institucional da UNESP |
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Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
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1808128701905240064 |