Agricultural answers and chemical composition of Massai grass under different nitrogen doses and urea sources
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Semina. Ciências Agrárias (Online) |
Texto Completo: | https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/29071 |
Resumo: | Under the hypothesis that modifying nitrogen sources and doses could increase nitrogen fertilization efficiency and productivity and improve forage quality, this study aimed to evaluate the morphological composition, structural characteristics and chemical composition of Panicum maximum cv. Massai forage cultivated under different urea sources (common and coated with Policote®) and nitrogen doses (200, 400 and 600 kg ha-1 year-1) during the autumn, winter and spring of 2014 and the summer and autumn of 2015. The experiment was carried out in Seropédica, RJ, under a randomized complete block design in a factorial arrangement (3x2) + 1 with four replications. High nitrogen rates promoted higher percentages of leaf blade dry mass and lower percentages of dead material dry mass in the forage mass and provided higher tiller population density and forage accumulation rate of Massai grass during the studied seasons. The use of coated urea promoted higher levels of crude protein in the forage than did the use of common urea in all seasons. The intensification of nitrogen fertilization reduced the nitrogen use efficiency but benefitted the structural characteristics, forage accumulation and chemical composition of Massai grass forage. The use of coated urea promoted greater of nitrogen use efficiency during all seasons of the year. |
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Agricultural answers and chemical composition of Massai grass under different nitrogen doses and urea sourcesRespostas agronômicas e de composição química do capim Massai sob diferentes doses de nitrogênio e fontes de ureiaCoated ureaNitrogen fertilizationPanicum maximumSeasons of the year.Adubação nitrogenadaEstações do anoPanicum maximumUreia revestida.Under the hypothesis that modifying nitrogen sources and doses could increase nitrogen fertilization efficiency and productivity and improve forage quality, this study aimed to evaluate the morphological composition, structural characteristics and chemical composition of Panicum maximum cv. Massai forage cultivated under different urea sources (common and coated with Policote®) and nitrogen doses (200, 400 and 600 kg ha-1 year-1) during the autumn, winter and spring of 2014 and the summer and autumn of 2015. The experiment was carried out in Seropédica, RJ, under a randomized complete block design in a factorial arrangement (3x2) + 1 with four replications. High nitrogen rates promoted higher percentages of leaf blade dry mass and lower percentages of dead material dry mass in the forage mass and provided higher tiller population density and forage accumulation rate of Massai grass during the studied seasons. The use of coated urea promoted higher levels of crude protein in the forage than did the use of common urea in all seasons. The intensification of nitrogen fertilization reduced the nitrogen use efficiency but benefitted the structural characteristics, forage accumulation and chemical composition of Massai grass forage. The use of coated urea promoted greater of nitrogen use efficiency during all seasons of the year.Sob a hipótese de aumento da eficiência da adubação nitrogenada quanto ao uso de diferentes fontes e doses de nitrogênio, aliado à maior produtividade e qualidade da forragem produzida, este trabalho foi conduzido com objetivo de avaliar a composição morfológica, as características estruturais e a composição química da forragem do Panicum maximum cv. Massai, cultivado sob diferentes fontes de ureia (comum e revestida por Policote®) e doses de nitrogênio (200, 400 e 600 kg ha-1 ano-1), durante as estações de outono, inverno e primavera de 2014, verão e outono de 2015. O experimento foi conduzido em Seropédica, RJ, sob delineamento de blocos completos casualizados em arranjo fatorial (3x2) + 1, com quatro repetições. O incremento de doses de nitrogênio promoveu maiores porcentagens de massa seca de lâminas foliares e menores porcentagens de material morto na massa de forragem, além de maiores densidades populacionais de perfilhos e taxa de acúmulo de forragem do capim Massai, durante as estações. O uso da ureia revestida promoveu maiores teores de proteína bruta na forragem que a ureia comum em todas as estações. A intensificação da adubação nitrogenada reduz a eficiência do uso de nitrogênio, mas beneficia as características estruturais, o acúmulo de forragem, e a composição química do capim Massai. O uso de ureia revestida promove maior eficiência da utilização do nitrogênio durante todas as estações do ano.UEL2018-05-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionPesquisa Empírica de Campoapplication/pdfhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/2907110.5433/1679-0359.2018v39n3p1225Semina: Ciências Agrárias; Vol. 39 No. 3 (2018); 1225-1238Semina: Ciências Agrárias; v. 39 n. 3 (2018); 1225-12381679-03591676-546Xreponame:Semina. Ciências Agrárias (Online)instname:Universidade Estadual de Londrina (UEL)instacron:UELenghttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/29071/23580Copyright (c) 2018 Semina: Ciências Agráriashttp://creativecommons.org/licenses/by-nc/4.0info:eu-repo/semantics/openAccessSilva, Aline Barros daCarvalho, Carlos Augusto Brandão deMorenz, Danilo AntonioSilva, Pedro Henrique Ferreira daSantos, Alex Junio dosSantos, Fábio Costa dos2022-10-20T20:55:49Zoai:ojs.pkp.sfu.ca:article/29071Revistahttp://www.uel.br/revistas/uel/index.php/semagrariasPUBhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/oaisemina.agrarias@uel.br1679-03591676-546Xopendoar:2022-10-20T20:55:49Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)false |
dc.title.none.fl_str_mv |
Agricultural answers and chemical composition of Massai grass under different nitrogen doses and urea sources Respostas agronômicas e de composição química do capim Massai sob diferentes doses de nitrogênio e fontes de ureia |
title |
Agricultural answers and chemical composition of Massai grass under different nitrogen doses and urea sources |
spellingShingle |
Agricultural answers and chemical composition of Massai grass under different nitrogen doses and urea sources Silva, Aline Barros da Coated urea Nitrogen fertilization Panicum maximum Seasons of the year. Adubação nitrogenada Estações do ano Panicum maximum Ureia revestida. |
title_short |
Agricultural answers and chemical composition of Massai grass under different nitrogen doses and urea sources |
title_full |
Agricultural answers and chemical composition of Massai grass under different nitrogen doses and urea sources |
title_fullStr |
Agricultural answers and chemical composition of Massai grass under different nitrogen doses and urea sources |
title_full_unstemmed |
Agricultural answers and chemical composition of Massai grass under different nitrogen doses and urea sources |
title_sort |
Agricultural answers and chemical composition of Massai grass under different nitrogen doses and urea sources |
author |
Silva, Aline Barros da |
author_facet |
Silva, Aline Barros da Carvalho, Carlos Augusto Brandão de Morenz, Danilo Antonio Silva, Pedro Henrique Ferreira da Santos, Alex Junio dos Santos, Fábio Costa dos |
author_role |
author |
author2 |
Carvalho, Carlos Augusto Brandão de Morenz, Danilo Antonio Silva, Pedro Henrique Ferreira da Santos, Alex Junio dos Santos, Fábio Costa dos |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Silva, Aline Barros da Carvalho, Carlos Augusto Brandão de Morenz, Danilo Antonio Silva, Pedro Henrique Ferreira da Santos, Alex Junio dos Santos, Fábio Costa dos |
dc.subject.por.fl_str_mv |
Coated urea Nitrogen fertilization Panicum maximum Seasons of the year. Adubação nitrogenada Estações do ano Panicum maximum Ureia revestida. |
topic |
Coated urea Nitrogen fertilization Panicum maximum Seasons of the year. Adubação nitrogenada Estações do ano Panicum maximum Ureia revestida. |
description |
Under the hypothesis that modifying nitrogen sources and doses could increase nitrogen fertilization efficiency and productivity and improve forage quality, this study aimed to evaluate the morphological composition, structural characteristics and chemical composition of Panicum maximum cv. Massai forage cultivated under different urea sources (common and coated with Policote®) and nitrogen doses (200, 400 and 600 kg ha-1 year-1) during the autumn, winter and spring of 2014 and the summer and autumn of 2015. The experiment was carried out in Seropédica, RJ, under a randomized complete block design in a factorial arrangement (3x2) + 1 with four replications. High nitrogen rates promoted higher percentages of leaf blade dry mass and lower percentages of dead material dry mass in the forage mass and provided higher tiller population density and forage accumulation rate of Massai grass during the studied seasons. The use of coated urea promoted higher levels of crude protein in the forage than did the use of common urea in all seasons. The intensification of nitrogen fertilization reduced the nitrogen use efficiency but benefitted the structural characteristics, forage accumulation and chemical composition of Massai grass forage. The use of coated urea promoted greater of nitrogen use efficiency during all seasons of the year. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-05-04 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Pesquisa Empírica de Campo |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/29071 10.5433/1679-0359.2018v39n3p1225 |
url |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/29071 |
identifier_str_mv |
10.5433/1679-0359.2018v39n3p1225 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/29071/23580 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2018 Semina: Ciências Agrárias http://creativecommons.org/licenses/by-nc/4.0 info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2018 Semina: Ciências Agrárias http://creativecommons.org/licenses/by-nc/4.0 |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
UEL |
publisher.none.fl_str_mv |
UEL |
dc.source.none.fl_str_mv |
Semina: Ciências Agrárias; Vol. 39 No. 3 (2018); 1225-1238 Semina: Ciências Agrárias; v. 39 n. 3 (2018); 1225-1238 1679-0359 1676-546X reponame:Semina. Ciências Agrárias (Online) instname:Universidade Estadual de Londrina (UEL) instacron:UEL |
instname_str |
Universidade Estadual de Londrina (UEL) |
instacron_str |
UEL |
institution |
UEL |
reponame_str |
Semina. Ciências Agrárias (Online) |
collection |
Semina. Ciências Agrárias (Online) |
repository.name.fl_str_mv |
Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL) |
repository.mail.fl_str_mv |
semina.agrarias@uel.br |
_version_ |
1799306077739679744 |