DOSES AND SOURCES OF NITROGEN ON YIELD AND BROMATOLOGICAL COMPOSITION OF XARAÉS GRASS

Detalhes bibliográficos
Autor(a) principal: de Pinho Costa, Kátia Aparecida
Data de Publicação: 2013
Outros Autores: Severiano, Eduardo da Costa, Silva, Fabiano Guimarães, Borges, Elenildo Ferreira, Epifânio, Patrícia Soares, Guimarães, Kátia Cylene
Tipo de documento: Artigo
Idioma: por
Título da fonte: Ciência animal brasileira (Online)
Texto Completo: https://revistas.ufg.br/vet/article/view/15206
Resumo: This study evaluated the effect of nitrogen sources and doses on dry matter yield and bromatological composition of xaraés grass throughout the year. The experiment was carried out at the Agronomy Faculty of Rio Verde University from October 2008 to January 2010. The experiment consisted of a randomized complete block design in a 2 x 4 factorial arrangement with measures repeated in time, and four replications. We tested two nitrogen sources (ammonium sulfate and urea) and four nitrogen levels (0, 200, 400 and 600 kg ha-1). The evaluations were conducted on the same plots throughout the year and during all four seasons (autumn, winter, spring, and summer). The results demonstrated that the maximum grass production of dry matter and crude protein of xaraés grass for the sources of urea and ammonium sulfate were estimated at doses of 500 and 472 kg ha-1 and 407 and 396 kg N ha-1, respectively. And for TDN level the maximum dose was 404.74 kg ha-1 N, for the source of ammonium sulfate. This result indicates that, regardless of the source, the application of increasing doses of up to 400 kg ha-1 of nitrogen in xaraés grass is sufficient to maintain a high dry matter production, associated with the nutritional value of the forage. The source ammonium sulfate demonstrated higher efficacy for xaraés grass dry matter production in the seasons evaluated, however additional studies are needed to evaluate the economical feasibility of its use.KEYWORDS: Ammonium sulphate; Brachiaria brizantha; urea; year season.
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spelling DOSES AND SOURCES OF NITROGEN ON YIELD AND BROMATOLOGICAL COMPOSITION OF XARAÉS GRASSDOSES E FONTES DE NITROGÊNIO NA PRODUÇÃO E COMPOSIÇÃO BROMATOLÓGICA DO CAPIM-XARAÉSPasturesPAstagensThis study evaluated the effect of nitrogen sources and doses on dry matter yield and bromatological composition of xaraés grass throughout the year. The experiment was carried out at the Agronomy Faculty of Rio Verde University from October 2008 to January 2010. The experiment consisted of a randomized complete block design in a 2 x 4 factorial arrangement with measures repeated in time, and four replications. We tested two nitrogen sources (ammonium sulfate and urea) and four nitrogen levels (0, 200, 400 and 600 kg ha-1). The evaluations were conducted on the same plots throughout the year and during all four seasons (autumn, winter, spring, and summer). The results demonstrated that the maximum grass production of dry matter and crude protein of xaraés grass for the sources of urea and ammonium sulfate were estimated at doses of 500 and 472 kg ha-1 and 407 and 396 kg N ha-1, respectively. And for TDN level the maximum dose was 404.74 kg ha-1 N, for the source of ammonium sulfate. This result indicates that, regardless of the source, the application of increasing doses of up to 400 kg ha-1 of nitrogen in xaraés grass is sufficient to maintain a high dry matter production, associated with the nutritional value of the forage. The source ammonium sulfate demonstrated higher efficacy for xaraés grass dry matter production in the seasons evaluated, however additional studies are needed to evaluate the economical feasibility of its use.KEYWORDS: Ammonium sulphate; Brachiaria brizantha; urea; year season.O objetivo do trabalho foi avaliar o efeito de doses e fontes de nitrogênio na produção de massa seca e composição bromatológica do capim-xaraés em diferentes estações do ano. O experimento foi conduzido no Campus da Faculdade de Agronomia da Universidade de Rio Verde, no período de outubro de 2008 a janeiro de 2010. O delineamento experimental utilizado foi em blocos completos ao acaso, em esquema fatorial 2 x 4, com medidas repetidas no tempo, com quatro repetições. Foram testadas duas fontes de nitrogênio (sulfato de amônio e uréia) e quatro doses de nitrogênio (0, 200, 400 e 600 kg ha-1). As avaliações foram realizadas durante o ano, nas estações de outono, inverno, primavera e verão, nas mesmas parcelas. Os resultados demonstraram que a máxima produção de massa seca e teores de PB do capim-xaraés nas fontes de ureia e sulfato de amônio foram estimados nas doses de 500 e 472 kg ha-1 e de 407 e 396 kg ha-1 de N, respectivamente. E para os teores de NDT a dose máxima foi de 404,74 kg ha-1 de N, na fonte de sulfato de amônio. Esse resultado indica que independente da fonte nitrogenada, a aplicação de doses crescentes de até 400 kg ha-1 de nitrogênio no capim-xaraés é suficiente para manter uma alta produção de massa seca, associada ao valor nutritivo da forragem. A fonte de sulfato de amônio mostrou maior eficiência na produção de massa seca do capim-xaraés nas estações analisadas.PALAVRAS-CHAVE: Brachiaria brizantha; estações do ano; sulfato de amônio; ureia.Universidade Federal de Goiás2013-09-28info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionResearchAvaliado por paresPesquisa Científicaapplication/pdftext/htmlhttps://revistas.ufg.br/vet/article/view/1520610.5216/cab.v14i3.15206Brazilian Animal Science/ Ciência Animal Brasileira; Vol. 14 No. 3 (2013); 288-298Ciência Animal Brasileira / Brazilian Animal Science; v. 14 n. 3 (2013); 288-2981809-68911518-2797reponame:Ciência animal brasileira (Online)instname:Universidade Federal de Goiás (UFG)instacron:UFGporhttps://revistas.ufg.br/vet/article/view/15206/15196https://revistas.ufg.br/vet/article/view/15206/15197de Pinho Costa, Kátia AparecidaSeveriano, Eduardo da CostaSilva, Fabiano GuimarãesBorges, Elenildo FerreiraEpifânio, Patrícia SoaresGuimarães, Kátia Cyleneinfo:eu-repo/semantics/openAccess2013-10-14T12:20:03Zoai:ojs.revistas.ufg.br:article/15206Revistahttps://revistas.ufg.br/vetPUBhttps://revistas.ufg.br/vet/oai||revistacab@gmail.com1809-68911518-2797opendoar:2024-05-21T19:55:48.685793Ciência animal brasileira (Online) - Universidade Federal de Goiás (UFG)true
dc.title.none.fl_str_mv DOSES AND SOURCES OF NITROGEN ON YIELD AND BROMATOLOGICAL COMPOSITION OF XARAÉS GRASS
DOSES E FONTES DE NITROGÊNIO NA PRODUÇÃO E COMPOSIÇÃO BROMATOLÓGICA DO CAPIM-XARAÉS
title DOSES AND SOURCES OF NITROGEN ON YIELD AND BROMATOLOGICAL COMPOSITION OF XARAÉS GRASS
spellingShingle DOSES AND SOURCES OF NITROGEN ON YIELD AND BROMATOLOGICAL COMPOSITION OF XARAÉS GRASS
de Pinho Costa, Kátia Aparecida
Pastures
PAstagens
title_short DOSES AND SOURCES OF NITROGEN ON YIELD AND BROMATOLOGICAL COMPOSITION OF XARAÉS GRASS
title_full DOSES AND SOURCES OF NITROGEN ON YIELD AND BROMATOLOGICAL COMPOSITION OF XARAÉS GRASS
title_fullStr DOSES AND SOURCES OF NITROGEN ON YIELD AND BROMATOLOGICAL COMPOSITION OF XARAÉS GRASS
title_full_unstemmed DOSES AND SOURCES OF NITROGEN ON YIELD AND BROMATOLOGICAL COMPOSITION OF XARAÉS GRASS
title_sort DOSES AND SOURCES OF NITROGEN ON YIELD AND BROMATOLOGICAL COMPOSITION OF XARAÉS GRASS
author de Pinho Costa, Kátia Aparecida
author_facet de Pinho Costa, Kátia Aparecida
Severiano, Eduardo da Costa
Silva, Fabiano Guimarães
Borges, Elenildo Ferreira
Epifânio, Patrícia Soares
Guimarães, Kátia Cylene
author_role author
author2 Severiano, Eduardo da Costa
Silva, Fabiano Guimarães
Borges, Elenildo Ferreira
Epifânio, Patrícia Soares
Guimarães, Kátia Cylene
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv de Pinho Costa, Kátia Aparecida
Severiano, Eduardo da Costa
Silva, Fabiano Guimarães
Borges, Elenildo Ferreira
Epifânio, Patrícia Soares
Guimarães, Kátia Cylene
dc.subject.por.fl_str_mv Pastures
PAstagens
topic Pastures
PAstagens
description This study evaluated the effect of nitrogen sources and doses on dry matter yield and bromatological composition of xaraés grass throughout the year. The experiment was carried out at the Agronomy Faculty of Rio Verde University from October 2008 to January 2010. The experiment consisted of a randomized complete block design in a 2 x 4 factorial arrangement with measures repeated in time, and four replications. We tested two nitrogen sources (ammonium sulfate and urea) and four nitrogen levels (0, 200, 400 and 600 kg ha-1). The evaluations were conducted on the same plots throughout the year and during all four seasons (autumn, winter, spring, and summer). The results demonstrated that the maximum grass production of dry matter and crude protein of xaraés grass for the sources of urea and ammonium sulfate were estimated at doses of 500 and 472 kg ha-1 and 407 and 396 kg N ha-1, respectively. And for TDN level the maximum dose was 404.74 kg ha-1 N, for the source of ammonium sulfate. This result indicates that, regardless of the source, the application of increasing doses of up to 400 kg ha-1 of nitrogen in xaraés grass is sufficient to maintain a high dry matter production, associated with the nutritional value of the forage. The source ammonium sulfate demonstrated higher efficacy for xaraés grass dry matter production in the seasons evaluated, however additional studies are needed to evaluate the economical feasibility of its use.KEYWORDS: Ammonium sulphate; Brachiaria brizantha; urea; year season.
publishDate 2013
dc.date.none.fl_str_mv 2013-09-28
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Research
Avaliado por pares
Pesquisa Científica
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://revistas.ufg.br/vet/article/view/15206
10.5216/cab.v14i3.15206
url https://revistas.ufg.br/vet/article/view/15206
identifier_str_mv 10.5216/cab.v14i3.15206
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://revistas.ufg.br/vet/article/view/15206/15196
https://revistas.ufg.br/vet/article/view/15206/15197
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
text/html
dc.publisher.none.fl_str_mv Universidade Federal de Goiás
publisher.none.fl_str_mv Universidade Federal de Goiás
dc.source.none.fl_str_mv Brazilian Animal Science/ Ciência Animal Brasileira; Vol. 14 No. 3 (2013); 288-298
Ciência Animal Brasileira / Brazilian Animal Science; v. 14 n. 3 (2013); 288-298
1809-6891
1518-2797
reponame:Ciência animal brasileira (Online)
instname:Universidade Federal de Goiás (UFG)
instacron:UFG
instname_str Universidade Federal de Goiás (UFG)
instacron_str UFG
institution UFG
reponame_str Ciência animal brasileira (Online)
collection Ciência animal brasileira (Online)
repository.name.fl_str_mv Ciência animal brasileira (Online) - Universidade Federal de Goiás (UFG)
repository.mail.fl_str_mv ||revistacab@gmail.com
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