Agricultural answers and chemical composition of Massai grass under different nitrogen doses and urea sources

Detalhes bibliográficos
Autor(a) principal: Silva, Aline Barros da
Data de Publicação: 2018
Outros Autores: Carvalho, Carlos Augusto Brandão de, Morenz, Danilo Antonio, Silva, Pedro Henrique Ferreira da, Santos, Alex Junio dos, Santos, Fábio Costa dos
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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spelling 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
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