Dry matter production and chemical composition of Massai grass submitted to nitrogen rates and cutting heights

Detalhes bibliográficos
Autor(a) principal: Pereira, Giselle Abadia Campos
Data de Publicação: 2016
Outros Autores: Lima, Leni Rodrigues, Silva, Joelson Antônio, Galati, Rosemay Lais, Zervoudakis, Joanis Tilemahos, Abreu, Joadil Gonçalves, Jesus, Lisiane Pereira de, Santos, Valéria Ana Corvalã dos, Ceni, Isabela de, Cabral, Luciano Silva
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/23072
Resumo: The study was carried out in a greenhouse with a 4X4 factorial arrangement randomized block design in order to evaluate the effects of nitrogen rates (0, 50, 100 and 150 mg dm-3) associated with cutting heights (10, 15, 20 and 25 cm) on dry matter production and the chemical composition of Massai grass. The seeding was done in pots with 11 kg of soil. 10 plants were kept per pot, and there were two cuts every 35 days. Nitrogen fertilization was split between the two cuts, where the first N application occurred after the uniformity cut and the second after the first cut. In each cut the plants were separated and weighed for botanical component evaluation: leaf blade and stem + sheath. After this, the samples were homogenized and analysed for dry matter (DM), crude protein (CP) and neutral detergent fibre (NDF) content. In the first cut, the N fertilization caused a linear increase in DM production of 0.058 g pot-1 per each 1 mg dm-3 of N applied, as well as causing an increase of 0.549% in CP percentage, a 0.0124 pot-1 g increase in CP production and a reduction of 0.055% in NDF. In the second cut, N rates promoted a quadratic effect on DM production. A maximum DM production of 16.48 g pot-1 with 107.27 mg dm-3 of N was observed while CP production content was increased by 0.0092 g pot-1 for each 1 mg dm-3 N applied. In terms of linear responses to DM and PB, as well as the use efficiency calculated for Massai grass, recommended N doses range between 50 and 100 g dm-3.
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spelling Dry matter production and chemical composition of Massai grass submitted to nitrogen rates and cutting heightsProdução e composição bromatológica do capim Massai submetido a doses de nitrogênio e alturas de corteDefoliationFertilizationManagementPanicum maximum cv. Massai.AdubaçãoDesfolhaçãoManejoPanicum maximum cv. Massai.The study was carried out in a greenhouse with a 4X4 factorial arrangement randomized block design in order to evaluate the effects of nitrogen rates (0, 50, 100 and 150 mg dm-3) associated with cutting heights (10, 15, 20 and 25 cm) on dry matter production and the chemical composition of Massai grass. The seeding was done in pots with 11 kg of soil. 10 plants were kept per pot, and there were two cuts every 35 days. Nitrogen fertilization was split between the two cuts, where the first N application occurred after the uniformity cut and the second after the first cut. In each cut the plants were separated and weighed for botanical component evaluation: leaf blade and stem + sheath. After this, the samples were homogenized and analysed for dry matter (DM), crude protein (CP) and neutral detergent fibre (NDF) content. In the first cut, the N fertilization caused a linear increase in DM production of 0.058 g pot-1 per each 1 mg dm-3 of N applied, as well as causing an increase of 0.549% in CP percentage, a 0.0124 pot-1 g increase in CP production and a reduction of 0.055% in NDF. In the second cut, N rates promoted a quadratic effect on DM production. A maximum DM production of 16.48 g pot-1 with 107.27 mg dm-3 of N was observed while CP production content was increased by 0.0092 g pot-1 for each 1 mg dm-3 N applied. In terms of linear responses to DM and PB, as well as the use efficiency calculated for Massai grass, recommended N doses range between 50 and 100 g dm-3.O estudo foi conduzido em casa de vegetação, considerando delineamento em blocos casualizados em arranjo fatorial 4X4, para avaliar os efeitos de quatro doses de N (0, 50, 100 e 150 mg dm-3) combinadas a quatro alturas de resíduo de corte (10, 15, 20 e 25 cm) e seu efeito sobre a produção de matéria seca e a composição bromatológica do capim Massai. A semeadura foi realizada em vasos com 11 kg de solo, permanecendo após o desbaste, 10 plantas por vaso, nas quais foram realizados dois cortes a cada 35 dias. A adubação nitrogenada foi parcelada entre os dois cortes, a primeira aplicação de N ocorreu após o corte de uniformização e a segunda após o primeiro corte. No momento do corte as plantas foram separadas e pesadas nos componentes botânicos de parte aérea: lâmina foliar e colmo+bainha. As amostras foram submetidas às análises de matéria seca (MS), proteína bruta (PB) e fibra em detergente neutro (FDN). No primeiro corte para cada 1mg dm-3 de N aplicado foi observado aumento na produção de MS da parte aérea em 0,058 g vaso-1, 0,549% de incremento no teor PB e 0,0124 g vaso-1 de aumento na quantidade de PB, bem como redução de 0,055% no teor de FDN. No segundo corte a máxima produção de MS da parte aérea foi de 16,48 g vaso-1 com 107,27 mg dm-3 de N e a produção de PB aumentou 0,0092 g vaso-1 para cada 1mg dm-3 de N aplicado. Considerando as respostas lineares para produção de MS e PB, bem como a eficiência de uso calculado para o capim Massai, recomendam-se doses de N variando entre 50 e 100 g dm-3.UEL2016-09-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionpesquisaapplication/pdfhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/2307210.5433/1679-0359.2016v37n4Supl1p2487Semina: Ciências Agrárias; Vol. 37 No. 4Supl1 (2016); 2487-2498Semina: Ciências Agrárias; v. 37 n. 4Supl1 (2016); 2487-24981679-03591676-546Xreponame:Semina. Ciências Agrárias (Online)instname:Universidade Estadual de Londrina (UEL)instacron:UELenghttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/23072/19596http://creativecommons.org/licenses/by-nc/4.0info:eu-repo/semantics/openAccessPereira, Giselle Abadia CamposLima, Leni RodriguesSilva, Joelson AntônioGalati, Rosemay LaisZervoudakis, Joanis TilemahosAbreu, Joadil GonçalvesJesus, Lisiane Pereira deSantos, Valéria Ana Corvalã dosCeni, Isabela deCabral, Luciano Silva2022-11-30T15:12:27Zoai:ojs.pkp.sfu.ca:article/23072Revistahttp://www.uel.br/revistas/uel/index.php/semagrariasPUBhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/oaisemina.agrarias@uel.br1679-03591676-546Xopendoar:2022-11-30T15:12:27Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)false
dc.title.none.fl_str_mv Dry matter production and chemical composition of Massai grass submitted to nitrogen rates and cutting heights
Produção e composição bromatológica do capim Massai submetido a doses de nitrogênio e alturas de corte
title Dry matter production and chemical composition of Massai grass submitted to nitrogen rates and cutting heights
spellingShingle Dry matter production and chemical composition of Massai grass submitted to nitrogen rates and cutting heights
Pereira, Giselle Abadia Campos
Defoliation
Fertilization
Management
Panicum maximum cv. Massai.
Adubação
Desfolhação
Manejo
Panicum maximum cv. Massai.
title_short Dry matter production and chemical composition of Massai grass submitted to nitrogen rates and cutting heights
title_full Dry matter production and chemical composition of Massai grass submitted to nitrogen rates and cutting heights
title_fullStr Dry matter production and chemical composition of Massai grass submitted to nitrogen rates and cutting heights
title_full_unstemmed Dry matter production and chemical composition of Massai grass submitted to nitrogen rates and cutting heights
title_sort Dry matter production and chemical composition of Massai grass submitted to nitrogen rates and cutting heights
author Pereira, Giselle Abadia Campos
author_facet Pereira, Giselle Abadia Campos
Lima, Leni Rodrigues
Silva, Joelson Antônio
Galati, Rosemay Lais
Zervoudakis, Joanis Tilemahos
Abreu, Joadil Gonçalves
Jesus, Lisiane Pereira de
Santos, Valéria Ana Corvalã dos
Ceni, Isabela de
Cabral, Luciano Silva
author_role author
author2 Lima, Leni Rodrigues
Silva, Joelson Antônio
Galati, Rosemay Lais
Zervoudakis, Joanis Tilemahos
Abreu, Joadil Gonçalves
Jesus, Lisiane Pereira de
Santos, Valéria Ana Corvalã dos
Ceni, Isabela de
Cabral, Luciano Silva
author2_role author
author
author
author
author
author
author
author
author
dc.contributor.author.fl_str_mv Pereira, Giselle Abadia Campos
Lima, Leni Rodrigues
Silva, Joelson Antônio
Galati, Rosemay Lais
Zervoudakis, Joanis Tilemahos
Abreu, Joadil Gonçalves
Jesus, Lisiane Pereira de
Santos, Valéria Ana Corvalã dos
Ceni, Isabela de
Cabral, Luciano Silva
dc.subject.por.fl_str_mv Defoliation
Fertilization
Management
Panicum maximum cv. Massai.
Adubação
Desfolhação
Manejo
Panicum maximum cv. Massai.
topic Defoliation
Fertilization
Management
Panicum maximum cv. Massai.
Adubação
Desfolhação
Manejo
Panicum maximum cv. Massai.
description The study was carried out in a greenhouse with a 4X4 factorial arrangement randomized block design in order to evaluate the effects of nitrogen rates (0, 50, 100 and 150 mg dm-3) associated with cutting heights (10, 15, 20 and 25 cm) on dry matter production and the chemical composition of Massai grass. The seeding was done in pots with 11 kg of soil. 10 plants were kept per pot, and there were two cuts every 35 days. Nitrogen fertilization was split between the two cuts, where the first N application occurred after the uniformity cut and the second after the first cut. In each cut the plants were separated and weighed for botanical component evaluation: leaf blade and stem + sheath. After this, the samples were homogenized and analysed for dry matter (DM), crude protein (CP) and neutral detergent fibre (NDF) content. In the first cut, the N fertilization caused a linear increase in DM production of 0.058 g pot-1 per each 1 mg dm-3 of N applied, as well as causing an increase of 0.549% in CP percentage, a 0.0124 pot-1 g increase in CP production and a reduction of 0.055% in NDF. In the second cut, N rates promoted a quadratic effect on DM production. A maximum DM production of 16.48 g pot-1 with 107.27 mg dm-3 of N was observed while CP production content was increased by 0.0092 g pot-1 for each 1 mg dm-3 N applied. In terms of linear responses to DM and PB, as well as the use efficiency calculated for Massai grass, recommended N doses range between 50 and 100 g dm-3.
publishDate 2016
dc.date.none.fl_str_mv 2016-09-02
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
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format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/23072
10.5433/1679-0359.2016v37n4Supl1p2487
url https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/23072
identifier_str_mv 10.5433/1679-0359.2016v37n4Supl1p2487
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/23072/19596
dc.rights.driver.fl_str_mv http://creativecommons.org/licenses/by-nc/4.0
info:eu-repo/semantics/openAccess
rights_invalid_str_mv 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. 37 No. 4Supl1 (2016); 2487-2498
Semina: Ciências Agrárias; v. 37 n. 4Supl1 (2016); 2487-2498
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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