Mass and nutritional quality of upper and lower strata of tropical forages
| Autor(a) principal: | |
|---|---|
| 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/23964 |
Resumo: | The goal of this work was to evaluate the growth dynamics and chemical characteristics of the upper and lower strata of summer perennial grasses under a four cuts system. The experiment was conducted in a randomized block design, composed of 28 treatments in a factorial arrangement of 7x4, with four repetitions. The cultivars evaluated were Star Grass, Coast-cross, Tifton 68, Tifton 85, Jiggs, Roxinha and Quicuio. Each cultivar was cut when it reached 95% light interception. The cultivars Jiggs and Tifton 68 had the highest (P < 0.05) accumulation of dry biomass ha-1 during the four cuts, with productions of 21,348 and 21,016 kg ha-1, respectively. The ash content varied (P < 0.05) among species and times of cutting for both strata. Cellulose contents were significantly different in the upper stratum, with the highest concentrations found in cvs. Quicuio and Tifton 68 (39.12% and 38.07%, respectively). We found the highest levels of lignin (P < 0.05), for both strata, in cv. Quicuio. Cultivars Jiggs and Tifton 68 were the most appropriate for a management system of four cuts, displaying good chemical composition and high productivity. |
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Mass and nutritional quality of upper and lower strata of tropical foragesAcúmulo e qualidade de forragem dos estratos superior e inferior de forrageiras tropicaisHerbage accumulationCynodonLight interceptionFibrous carbohydrates.Acúmulo de forragemCynodonInterceptação luminosaCarboidratos fibrosos.The goal of this work was to evaluate the growth dynamics and chemical characteristics of the upper and lower strata of summer perennial grasses under a four cuts system. The experiment was conducted in a randomized block design, composed of 28 treatments in a factorial arrangement of 7x4, with four repetitions. The cultivars evaluated were Star Grass, Coast-cross, Tifton 68, Tifton 85, Jiggs, Roxinha and Quicuio. Each cultivar was cut when it reached 95% light interception. The cultivars Jiggs and Tifton 68 had the highest (P < 0.05) accumulation of dry biomass ha-1 during the four cuts, with productions of 21,348 and 21,016 kg ha-1, respectively. The ash content varied (P < 0.05) among species and times of cutting for both strata. Cellulose contents were significantly different in the upper stratum, with the highest concentrations found in cvs. Quicuio and Tifton 68 (39.12% and 38.07%, respectively). We found the highest levels of lignin (P < 0.05), for both strata, in cv. Quicuio. Cultivars Jiggs and Tifton 68 were the most appropriate for a management system of four cuts, displaying good chemical composition and high productivity.O objetivo deste trabalho foi avaliar a dinâmica de crescimento e as características químicas dos estratos superior e inferior de gramíneas perenes estivais sob sistema de quatro cortes. O experimento foi conduzido em delineamento de blocos casualizados, composto por 28 tratamentos em esquema fatorial 7x4, com 4 repetições. Foram avaliadas as cultivares Estrela roxa, Coast-cross, Tifton 68, Tifton 85, Jiggs, Hemartrhia roxinha e Quicuio, e o corte de cada cultivar foi estabelecido no momento em que as mesmas alcançaram 95% de interceptação luminosa. As cvs. Jiggs e Tifton 68 foram responsáveis pelo maior (P < 0,05) acúmulo de massa de forragem seca ha-1 durante os quatro cortes, com produções de 21.348 e 21.016 kg ha-1, respectivamente. O teor de matéria mineral apontou variações (P < 0,05) entre as espécies avaliadas e as épocas em que os cortes foram realizados, tanto no estrato superior como no estrato inferior. Houve diferença significativa entre os teores de celulose do estrato superior, onde, as cvs. Quicuio e Tifton 68 foram responsáveis pelas maiores concentrações dessa fração (39,12% e 38,07%, respectivamente), e em ambos estratos a cv. Quicuio teve o maior (P < 0,05) nível de lignina. Em manejo de quatro cortes, as cvs. Jiggs e Tifton 68 se mostraram as mais adequadas, pois apresentaram boa composição química e alta produtividade.UEL2016-09-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionPesquisa cientificaapplication/pdfhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/2396410.5433/1679-0359.2016v37n4Supl1p2725Semina: Ciências Agrárias; Vol. 37 No. 4Supl1 (2016); 2725-2736Semina: Ciências Agrárias; v. 37 n. 4Supl1 (2016); 2725-27361679-03591676-546Xreponame:Semina. Ciências Agrárias (Online)instname:Universidade Estadual de Londrina (UEL)instacron:UELenghttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/23964/19619Copyright (c) 2016 Semina: Ciências Agráriashttp://creativecommons.org/licenses/by-nc/4.0info:eu-repo/semantics/openAccessPoczynek, MailsonNeumann, MikaelHorst, Egon HenriqueVenancio, Bruno JoséFigueira, Danúbia NogueiraPoczynek, MilaineGalbeiro, Sandra2022-11-30T15:53:08Zoai:ojs.pkp.sfu.ca:article/23964Revistahttp://www.uel.br/revistas/uel/index.php/semagrariasPUBhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/oaisemina.agrarias@uel.br1679-03591676-546Xopendoar:2022-11-30T15:53:08Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)false |
| dc.title.none.fl_str_mv |
Mass and nutritional quality of upper and lower strata of tropical forages Acúmulo e qualidade de forragem dos estratos superior e inferior de forrageiras tropicais |
| title |
Mass and nutritional quality of upper and lower strata of tropical forages |
| spellingShingle |
Mass and nutritional quality of upper and lower strata of tropical forages Poczynek, Mailson Herbage accumulation Cynodon Light interception Fibrous carbohydrates. Acúmulo de forragem Cynodon Interceptação luminosa Carboidratos fibrosos. |
| title_short |
Mass and nutritional quality of upper and lower strata of tropical forages |
| title_full |
Mass and nutritional quality of upper and lower strata of tropical forages |
| title_fullStr |
Mass and nutritional quality of upper and lower strata of tropical forages |
| title_full_unstemmed |
Mass and nutritional quality of upper and lower strata of tropical forages |
| title_sort |
Mass and nutritional quality of upper and lower strata of tropical forages |
| author |
Poczynek, Mailson |
| author_facet |
Poczynek, Mailson Neumann, Mikael Horst, Egon Henrique Venancio, Bruno José Figueira, Danúbia Nogueira Poczynek, Milaine Galbeiro, Sandra |
| author_role |
author |
| author2 |
Neumann, Mikael Horst, Egon Henrique Venancio, Bruno José Figueira, Danúbia Nogueira Poczynek, Milaine Galbeiro, Sandra |
| author2_role |
author author author author author author |
| dc.contributor.author.fl_str_mv |
Poczynek, Mailson Neumann, Mikael Horst, Egon Henrique Venancio, Bruno José Figueira, Danúbia Nogueira Poczynek, Milaine Galbeiro, Sandra |
| dc.subject.por.fl_str_mv |
Herbage accumulation Cynodon Light interception Fibrous carbohydrates. Acúmulo de forragem Cynodon Interceptação luminosa Carboidratos fibrosos. |
| topic |
Herbage accumulation Cynodon Light interception Fibrous carbohydrates. Acúmulo de forragem Cynodon Interceptação luminosa Carboidratos fibrosos. |
| description |
The goal of this work was to evaluate the growth dynamics and chemical characteristics of the upper and lower strata of summer perennial grasses under a four cuts system. The experiment was conducted in a randomized block design, composed of 28 treatments in a factorial arrangement of 7x4, with four repetitions. The cultivars evaluated were Star Grass, Coast-cross, Tifton 68, Tifton 85, Jiggs, Roxinha and Quicuio. Each cultivar was cut when it reached 95% light interception. The cultivars Jiggs and Tifton 68 had the highest (P < 0.05) accumulation of dry biomass ha-1 during the four cuts, with productions of 21,348 and 21,016 kg ha-1, respectively. The ash content varied (P < 0.05) among species and times of cutting for both strata. Cellulose contents were significantly different in the upper stratum, with the highest concentrations found in cvs. Quicuio and Tifton 68 (39.12% and 38.07%, respectively). We found the highest levels of lignin (P < 0.05), for both strata, in cv. Quicuio. Cultivars Jiggs and Tifton 68 were the most appropriate for a management system of four cuts, displaying good chemical composition and high productivity. |
| 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 cientifica |
| format |
article |
| status_str |
publishedVersion |
| dc.identifier.uri.fl_str_mv |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/23964 10.5433/1679-0359.2016v37n4Supl1p2725 |
| url |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/23964 |
| identifier_str_mv |
10.5433/1679-0359.2016v37n4Supl1p2725 |
| 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/23964/19619 |
| dc.rights.driver.fl_str_mv |
Copyright (c) 2016 Semina: Ciências Agrárias http://creativecommons.org/licenses/by-nc/4.0 info:eu-repo/semantics/openAccess |
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Copyright (c) 2016 Semina: Ciências Agrárias http://creativecommons.org/licenses/by-nc/4.0 |
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openAccess |
| dc.format.none.fl_str_mv |
application/pdf |
| dc.publisher.none.fl_str_mv |
UEL |
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UEL |
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Semina: Ciências Agrárias; Vol. 37 No. 4Supl1 (2016); 2725-2736 Semina: Ciências Agrárias; v. 37 n. 4Supl1 (2016); 2725-2736 1679-0359 1676-546X reponame:Semina. Ciências Agrárias (Online) instname:Universidade Estadual de Londrina (UEL) instacron:UEL |
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Universidade Estadual de Londrina (UEL) |
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UEL |
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UEL |
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Semina. Ciências Agrárias (Online) |
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Semina. Ciências Agrárias (Online) |
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Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL) |
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semina.agrarias@uel.br |
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1799306075252457472 |