MORPHOLOGICAL, PRODUCTIVE, AND CHEMICAL TRAITS OF XARAÉS GRASS: NITROGEN TOPDRESSING VERSUS INOCULATION WITH DIAZOTROPHIC BACTERIA

Detalhes bibliográficos
Autor(a) principal: Dias, Márcio de Souza
Data de Publicação: 2019
Outros Autores: Florentino, Ligiane Aparecida, Rabêlo, Flávio Henrique Silveira, Rezende, Adauton Vilela de, Souza, Flávia Romam da Costa, Borgo, Lucélia
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Ciência animal brasileira (Online)
Texto Completo: https://revistas.ufg.br/vet/article/view/38586
Resumo: Nitrogen topdressing is essential for forage production, but the high cost of fertilizers stimulates the search for new technologies, such as the use of diazotrophic bacteria, which can fix the atmospheric nitrogen. To evaluate the potential of this technology in providing the amount of nitrogen requested by xaraés grass as topdressing, plants were fertilized at planting with an N rate of 100 kg ha-1, inoculated with strains of diazotrophic bacteria and Azospirillum brasilense, and compared with plants that received 100 kg ha-1 of N at planting and as topdressing during two periods of shoot growth (58 days in the first period and 26 days in the second period) in 20-dm³ pots. The data were subjected to analysis of variance and means compared by the Scott-Knott test at 5% significance. The leaf area of xaraés grass inoculated with strain UN42 was similar to that of plants that received nitrogen topdressing. However, grass biomass production was higher when nitrogen topdressing was applied. Plant inoculation with Azospirillum brasilense and strains UN16, UN17, UN21, UN33, UN49, and UN78 increased crude protein contents of xaraés grass when compared to nitrogen fertilization at planting without inoculation. However, grass inoculation with diazotrophic bacteria does not replace nitrogen topdressing completely.Keywords: Azospirillum brasilense, biological nitrogen fixation, root system, sustainable production, Urochloa brizantha
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spelling MORPHOLOGICAL, PRODUCTIVE, AND CHEMICAL TRAITS OF XARAÉS GRASS: NITROGEN TOPDRESSING VERSUS INOCULATION WITH DIAZOTROPHIC BACTERIACARACTERÍSTICAS MORFOLÓGICAS, PRODUTIVAS E BROMATOLÓGICAS DO CAPIM-XARAÉS: ADUBAÇÃO NITROGENADA EM COBERTURA VERSUS INOCULAÇÃO COM BACTÉRIAS DIAZOTRÓFICASNitrogen topdressing is essential for forage production, but the high cost of fertilizers stimulates the search for new technologies, such as the use of diazotrophic bacteria, which can fix the atmospheric nitrogen. To evaluate the potential of this technology in providing the amount of nitrogen requested by xaraés grass as topdressing, plants were fertilized at planting with an N rate of 100 kg ha-1, inoculated with strains of diazotrophic bacteria and Azospirillum brasilense, and compared with plants that received 100 kg ha-1 of N at planting and as topdressing during two periods of shoot growth (58 days in the first period and 26 days in the second period) in 20-dm³ pots. The data were subjected to analysis of variance and means compared by the Scott-Knott test at 5% significance. The leaf area of xaraés grass inoculated with strain UN42 was similar to that of plants that received nitrogen topdressing. However, grass biomass production was higher when nitrogen topdressing was applied. Plant inoculation with Azospirillum brasilense and strains UN16, UN17, UN21, UN33, UN49, and UN78 increased crude protein contents of xaraés grass when compared to nitrogen fertilization at planting without inoculation. However, grass inoculation with diazotrophic bacteria does not replace nitrogen topdressing completely.Keywords: Azospirillum brasilense, biological nitrogen fixation, root system, sustainable production, Urochloa brizanthaA adubação nitrogenada em cobertura é imprescindível para a produção de forragem, mas o elevado custo dos fertilizantes estimula a busca por novas tecnologias, como o uso de bactérias diazotróficas, que podem fixar o nitrogênio atmosférico. Para avaliar o potencial dessa tecnologia em suprir a quantidade de nitrogênio requerida pelo capim-xaraés em cobertura, as plantas foram adubadas em plantio com dose equivalente a 100 kg ha-1 de N e inoculadas com estirpes de bactérias diazotróficas e Azospirillum brasilense, e comparadas com plantas que receberam 100 kg ha-1 de N em plantio e em cobertura, durante dois períodos de crescimento da parte aérea (58 dias no primeiro período e 26 dias no segundo período), em vasos de 20 dm³. Os dados foram submetidos à análise de variância e as médias comparadas pelo teste Scott-Knott a 5% de significância. A área foliar do capim-xaraés inoculado com a estirpe UN42 foi semelhante a das plantas que receberam adubação nitrogenada em cobertura. Todavia, a produção de massa do capim foi maior quando houve adubação nitrogenada em cobertura. A inoculação das plantas com Azospirillum brasilense e as estirpes UN16, UN17, UN21, UN33, UN49 e UN78 aumentou os teores de proteína bruta do capim-xaraés em relação à adubação nitrogenada em plantio sem inoculação. Porém, a inoculação do capim com as bactérias diazotróficas não substitui totalmente a adubação nitrogenada em cobertura.Palavras-chave: Azospirillum brasilense, fixação biológica de nitrogênio, produção sustentável, sistema radicular, Urochloa brizanthaUniversidade Federal de Goiás2019-09-23info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdftext/htmlhttps://revistas.ufg.br/vet/article/view/38586Brazilian Animal Science/ Ciência Animal Brasileira; Vol. 20 (2019): Continuous publication; 1-12Ciência Animal Brasileira / Brazilian Animal Science; v. 20 (2019): Publicação contínua; 1-121809-68911518-2797reponame:Ciência animal brasileira (Online)instname:Universidade Federal de Goiás (UFG)instacron:UFGenghttps://revistas.ufg.br/vet/article/view/38586/33706https://revistas.ufg.br/vet/article/view/38586/33707Copyright (c) 2019 Ciência Animal Brasileirainfo:eu-repo/semantics/openAccessDias, Márcio de SouzaFlorentino, Ligiane AparecidaRabêlo, Flávio Henrique SilveiraRezende, Adauton Vilela deSouza, Flávia Romam da CostaBorgo, Lucélia2023-03-23T18:49:21Zoai:ojs.revistas.ufg.br:article/38586Revistahttps://revistas.ufg.br/vetPUBhttps://revistas.ufg.br/vet/oai||revistacab@gmail.com1809-68911518-2797opendoar:2024-05-21T19:56:12.567441Ciência animal brasileira (Online) - Universidade Federal de Goiás (UFG)true
dc.title.none.fl_str_mv MORPHOLOGICAL, PRODUCTIVE, AND CHEMICAL TRAITS OF XARAÉS GRASS: NITROGEN TOPDRESSING VERSUS INOCULATION WITH DIAZOTROPHIC BACTERIA
CARACTERÍSTICAS MORFOLÓGICAS, PRODUTIVAS E BROMATOLÓGICAS DO CAPIM-XARAÉS: ADUBAÇÃO NITROGENADA EM COBERTURA VERSUS INOCULAÇÃO COM BACTÉRIAS DIAZOTRÓFICAS
title MORPHOLOGICAL, PRODUCTIVE, AND CHEMICAL TRAITS OF XARAÉS GRASS: NITROGEN TOPDRESSING VERSUS INOCULATION WITH DIAZOTROPHIC BACTERIA
spellingShingle MORPHOLOGICAL, PRODUCTIVE, AND CHEMICAL TRAITS OF XARAÉS GRASS: NITROGEN TOPDRESSING VERSUS INOCULATION WITH DIAZOTROPHIC BACTERIA
Dias, Márcio de Souza
title_short MORPHOLOGICAL, PRODUCTIVE, AND CHEMICAL TRAITS OF XARAÉS GRASS: NITROGEN TOPDRESSING VERSUS INOCULATION WITH DIAZOTROPHIC BACTERIA
title_full MORPHOLOGICAL, PRODUCTIVE, AND CHEMICAL TRAITS OF XARAÉS GRASS: NITROGEN TOPDRESSING VERSUS INOCULATION WITH DIAZOTROPHIC BACTERIA
title_fullStr MORPHOLOGICAL, PRODUCTIVE, AND CHEMICAL TRAITS OF XARAÉS GRASS: NITROGEN TOPDRESSING VERSUS INOCULATION WITH DIAZOTROPHIC BACTERIA
title_full_unstemmed MORPHOLOGICAL, PRODUCTIVE, AND CHEMICAL TRAITS OF XARAÉS GRASS: NITROGEN TOPDRESSING VERSUS INOCULATION WITH DIAZOTROPHIC BACTERIA
title_sort MORPHOLOGICAL, PRODUCTIVE, AND CHEMICAL TRAITS OF XARAÉS GRASS: NITROGEN TOPDRESSING VERSUS INOCULATION WITH DIAZOTROPHIC BACTERIA
author Dias, Márcio de Souza
author_facet Dias, Márcio de Souza
Florentino, Ligiane Aparecida
Rabêlo, Flávio Henrique Silveira
Rezende, Adauton Vilela de
Souza, Flávia Romam da Costa
Borgo, Lucélia
author_role author
author2 Florentino, Ligiane Aparecida
Rabêlo, Flávio Henrique Silveira
Rezende, Adauton Vilela de
Souza, Flávia Romam da Costa
Borgo, Lucélia
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Dias, Márcio de Souza
Florentino, Ligiane Aparecida
Rabêlo, Flávio Henrique Silveira
Rezende, Adauton Vilela de
Souza, Flávia Romam da Costa
Borgo, Lucélia
description Nitrogen topdressing is essential for forage production, but the high cost of fertilizers stimulates the search for new technologies, such as the use of diazotrophic bacteria, which can fix the atmospheric nitrogen. To evaluate the potential of this technology in providing the amount of nitrogen requested by xaraés grass as topdressing, plants were fertilized at planting with an N rate of 100 kg ha-1, inoculated with strains of diazotrophic bacteria and Azospirillum brasilense, and compared with plants that received 100 kg ha-1 of N at planting and as topdressing during two periods of shoot growth (58 days in the first period and 26 days in the second period) in 20-dm³ pots. The data were subjected to analysis of variance and means compared by the Scott-Knott test at 5% significance. The leaf area of xaraés grass inoculated with strain UN42 was similar to that of plants that received nitrogen topdressing. However, grass biomass production was higher when nitrogen topdressing was applied. Plant inoculation with Azospirillum brasilense and strains UN16, UN17, UN21, UN33, UN49, and UN78 increased crude protein contents of xaraés grass when compared to nitrogen fertilization at planting without inoculation. However, grass inoculation with diazotrophic bacteria does not replace nitrogen topdressing completely.Keywords: Azospirillum brasilense, biological nitrogen fixation, root system, sustainable production, Urochloa brizantha
publishDate 2019
dc.date.none.fl_str_mv 2019-09-23
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://revistas.ufg.br/vet/article/view/38586
url https://revistas.ufg.br/vet/article/view/38586
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://revistas.ufg.br/vet/article/view/38586/33706
https://revistas.ufg.br/vet/article/view/38586/33707
dc.rights.driver.fl_str_mv Copyright (c) 2019 Ciência Animal Brasileira
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2019 Ciência Animal Brasileira
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. 20 (2019): Continuous publication; 1-12
Ciência Animal Brasileira / Brazilian Animal Science; v. 20 (2019): Publicação contínua; 1-12
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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