MORPHOGENESIS, STRUCTURAL CHARACTERISTICS AND FORAGE ACCUMULATION OF Megathyrsus maximus BRS ZURI SUBJECTED TO NITROGEN FERTILIZATION
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , , , , , , , |
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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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 |
|
_version_ |
1808129373663920128 |