MORPHOGENESIS, STRUCTURAL CHARACTERISTICS AND FORAGE ACCUMULATION OF Megathyrsus maximus BRS ZURI SUBJECTED TO NITROGEN FERTILIZATION

Detalhes bibliográficos
Autor(a) principal: Inacio de Abreu, Mateus Jose
Data de Publicação: 2020
Outros Autores: Pereira Paula, Paulo Ricardo, Tavares, Valdir Botega, Cidrini, Iorrano Andrade [UNESP], Nunes, Henrique de Oliveira, Junior Custodio Emiliano, Welton, Souza, Willian Luiz de [UNESP], Coelho, Rigles Maia, Neiva Junior, Arnaldo Prata, Paiva Tomaz, Carlos Eduardo de
Tipo de documento: Artigo
Idioma: por
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.17523/bia.2020.v77.e1486
http://hdl.handle.net/11449/209057
Resumo: Nitrogen fertilization permits to increase the carrying capacity of pastures; however, the use of high doses can have negative effects on the growth of forage grasses. Therefore, the aim of this study was to evaluate the influence of increasing nitrogen doses on the morphogenic and structural characteristics, biomass accumulation, and nitrogen conversion and recovery efficiencies of Megathyrsus maximus cv. BRS Zuri. Five nitrogen doses (0, 200, 400, 600 and 800 kg of nitrogen/ha) were tested in a randomized block design with four replicates. A quadratic effect was observed for elongation rate, leaf appearance rate, leaf lifetime, and phyllochron. There was an increase in the number of tillers and in the production of dry matter when the plants were submitted to fertilization; however, both the efficiency of nitrogen use and the apparent recovery of nitrogen decreased linearly with increasing nitrogen level. The use of nitrogen fertilizer improved the morphogenic characteristics, except for stalk elongation rate and leaf senescence rate, which remained stable. Nitrogen fertilization accelerates the growth rates of Megathyrsus maximus cv. BRS Zuri. The maximum responses in the morphogenic variables number of live and total leaves per tiller are obtained with doses close to 500 kg/ha, while doses ranging from 600 to 647 kg/ha provide a larger leaf size per tiller, a higher tiller population density, and higher dry matter production. Nitrogen utilization and recovery efficiencies decrease with increasing nitrogen doses.
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spelling MORPHOGENESIS, STRUCTURAL CHARACTERISTICS AND FORAGE ACCUMULATION OF Megathyrsus maximus BRS ZURI SUBJECTED TO NITROGEN FERTILIZATIONmorphogenic characteristicsnitrogen efficiencynitrogen fertilizerforage productionnitrogen recoveryNitrogen fertilization permits to increase the carrying capacity of pastures; however, the use of high doses can have negative effects on the growth of forage grasses. Therefore, the aim of this study was to evaluate the influence of increasing nitrogen doses on the morphogenic and structural characteristics, biomass accumulation, and nitrogen conversion and recovery efficiencies of Megathyrsus maximus cv. BRS Zuri. Five nitrogen doses (0, 200, 400, 600 and 800 kg of nitrogen/ha) were tested in a randomized block design with four replicates. A quadratic effect was observed for elongation rate, leaf appearance rate, leaf lifetime, and phyllochron. There was an increase in the number of tillers and in the production of dry matter when the plants were submitted to fertilization; however, both the efficiency of nitrogen use and the apparent recovery of nitrogen decreased linearly with increasing nitrogen level. The use of nitrogen fertilizer improved the morphogenic characteristics, except for stalk elongation rate and leaf senescence rate, which remained stable. Nitrogen fertilization accelerates the growth rates of Megathyrsus maximus cv. BRS Zuri. The maximum responses in the morphogenic variables number of live and total leaves per tiller are obtained with doses close to 500 kg/ha, while doses ranging from 600 to 647 kg/ha provide a larger leaf size per tiller, a higher tiller population density, and higher dry matter production. Nitrogen utilization and recovery efficiencies decrease with increasing nitrogen doses.Inst Fed Sudeste MG, Campus Rio Pomba, Rio Pomba, MG, BrazilUniv Estadual Paulista, UNESP, Campus Jaboticabal, Jaboticabal, SP, BrazilUniv Estadual Paulista, UNESP, Campus Jaboticabal, Jaboticabal, SP, BrazilInst ZootecniaInst Fed Sudeste MGUniversidade Estadual Paulista (Unesp)Inacio de Abreu, Mateus JosePereira Paula, Paulo RicardoTavares, Valdir BotegaCidrini, Iorrano Andrade [UNESP]Nunes, Henrique de OliveiraJunior Custodio Emiliano, WeltonSouza, Willian Luiz de [UNESP]Coelho, Rigles MaiaNeiva Junior, Arnaldo PrataPaiva Tomaz, Carlos Eduardo de2021-06-25T11:47:05Z2021-06-25T11:47:05Z2020-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article17http://dx.doi.org/10.17523/bia.2020.v77.e1486Boletim De Industria Animal. Nova Odessa: Inst Zootecnia, v. 77, 17 p., 2020.0067-9615http://hdl.handle.net/11449/20905710.17523/bia.2020.v77.e1486WOS:000603659900001Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPporBoletim De Industria Animalinfo:eu-repo/semantics/openAccess2021-10-23T19:23:31Zoai:repositorio.unesp.br:11449/209057Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T21:55:30.704247Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv MORPHOGENESIS, STRUCTURAL CHARACTERISTICS AND FORAGE ACCUMULATION OF Megathyrsus maximus BRS ZURI SUBJECTED TO NITROGEN FERTILIZATION
title MORPHOGENESIS, STRUCTURAL CHARACTERISTICS AND FORAGE ACCUMULATION OF Megathyrsus maximus BRS ZURI SUBJECTED TO NITROGEN FERTILIZATION
spellingShingle MORPHOGENESIS, STRUCTURAL CHARACTERISTICS AND FORAGE ACCUMULATION OF Megathyrsus maximus BRS ZURI SUBJECTED TO NITROGEN FERTILIZATION
Inacio de Abreu, Mateus Jose
morphogenic characteristics
nitrogen efficiency
nitrogen fertilizer
forage production
nitrogen recovery
title_short MORPHOGENESIS, STRUCTURAL CHARACTERISTICS AND FORAGE ACCUMULATION OF Megathyrsus maximus BRS ZURI SUBJECTED TO NITROGEN FERTILIZATION
title_full MORPHOGENESIS, STRUCTURAL CHARACTERISTICS AND FORAGE ACCUMULATION OF Megathyrsus maximus BRS ZURI SUBJECTED TO NITROGEN FERTILIZATION
title_fullStr MORPHOGENESIS, STRUCTURAL CHARACTERISTICS AND FORAGE ACCUMULATION OF Megathyrsus maximus BRS ZURI SUBJECTED TO NITROGEN FERTILIZATION
title_full_unstemmed MORPHOGENESIS, STRUCTURAL CHARACTERISTICS AND FORAGE ACCUMULATION OF Megathyrsus maximus BRS ZURI SUBJECTED TO NITROGEN FERTILIZATION
title_sort MORPHOGENESIS, STRUCTURAL CHARACTERISTICS AND FORAGE ACCUMULATION OF Megathyrsus maximus BRS ZURI SUBJECTED TO NITROGEN FERTILIZATION
author Inacio de Abreu, Mateus Jose
author_facet Inacio de Abreu, Mateus Jose
Pereira Paula, Paulo Ricardo
Tavares, Valdir Botega
Cidrini, Iorrano Andrade [UNESP]
Nunes, Henrique de Oliveira
Junior Custodio Emiliano, Welton
Souza, Willian Luiz de [UNESP]
Coelho, Rigles Maia
Neiva Junior, Arnaldo Prata
Paiva Tomaz, Carlos Eduardo de
author_role author
author2 Pereira Paula, Paulo Ricardo
Tavares, Valdir Botega
Cidrini, Iorrano Andrade [UNESP]
Nunes, Henrique de Oliveira
Junior Custodio Emiliano, Welton
Souza, Willian Luiz de [UNESP]
Coelho, Rigles Maia
Neiva Junior, Arnaldo Prata
Paiva Tomaz, Carlos Eduardo de
author2_role author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Inst Fed Sudeste MG
Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Inacio de Abreu, Mateus Jose
Pereira Paula, Paulo Ricardo
Tavares, Valdir Botega
Cidrini, Iorrano Andrade [UNESP]
Nunes, Henrique de Oliveira
Junior Custodio Emiliano, Welton
Souza, Willian Luiz de [UNESP]
Coelho, Rigles Maia
Neiva Junior, Arnaldo Prata
Paiva Tomaz, Carlos Eduardo de
dc.subject.por.fl_str_mv morphogenic characteristics
nitrogen efficiency
nitrogen fertilizer
forage production
nitrogen recovery
topic morphogenic characteristics
nitrogen efficiency
nitrogen fertilizer
forage production
nitrogen recovery
description Nitrogen fertilization permits to increase the carrying capacity of pastures; however, the use of high doses can have negative effects on the growth of forage grasses. Therefore, the aim of this study was to evaluate the influence of increasing nitrogen doses on the morphogenic and structural characteristics, biomass accumulation, and nitrogen conversion and recovery efficiencies of Megathyrsus maximus cv. BRS Zuri. Five nitrogen doses (0, 200, 400, 600 and 800 kg of nitrogen/ha) were tested in a randomized block design with four replicates. A quadratic effect was observed for elongation rate, leaf appearance rate, leaf lifetime, and phyllochron. There was an increase in the number of tillers and in the production of dry matter when the plants were submitted to fertilization; however, both the efficiency of nitrogen use and the apparent recovery of nitrogen decreased linearly with increasing nitrogen level. The use of nitrogen fertilizer improved the morphogenic characteristics, except for stalk elongation rate and leaf senescence rate, which remained stable. Nitrogen fertilization accelerates the growth rates of Megathyrsus maximus cv. BRS Zuri. The maximum responses in the morphogenic variables number of live and total leaves per tiller are obtained with doses close to 500 kg/ha, while doses ranging from 600 to 647 kg/ha provide a larger leaf size per tiller, a higher tiller population density, and higher dry matter production. Nitrogen utilization and recovery efficiencies decrease with increasing nitrogen doses.
publishDate 2020
dc.date.none.fl_str_mv 2020-01-01
2021-06-25T11:47:05Z
2021-06-25T11:47:05Z
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://dx.doi.org/10.17523/bia.2020.v77.e1486
Boletim De Industria Animal. Nova Odessa: Inst Zootecnia, v. 77, 17 p., 2020.
0067-9615
http://hdl.handle.net/11449/209057
10.17523/bia.2020.v77.e1486
WOS:000603659900001
url http://dx.doi.org/10.17523/bia.2020.v77.e1486
http://hdl.handle.net/11449/209057
identifier_str_mv Boletim De Industria Animal. Nova Odessa: Inst Zootecnia, v. 77, 17 p., 2020.
0067-9615
10.17523/bia.2020.v77.e1486
WOS:000603659900001
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv Boletim De Industria Animal
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 17
dc.publisher.none.fl_str_mv Inst Zootecnia
publisher.none.fl_str_mv Inst Zootecnia
dc.source.none.fl_str_mv Web of Science
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
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