Dry matter production and chemical composition of Massai grass submitted to nitrogen rates and cutting heights
Autor(a) principal: | |
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Data de Publicação: | 2016 |
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/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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Semina. Ciências Agrárias (Online) |
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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 pesquisa |
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 |
_version_ |
1799306074614923264 |