Production and quality of Tifton 85 pastures overseeded with black oat: effects of irrigation and nitrogen fertilization
Autor(a) principal: | |
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Data de Publicação: | 2018 |
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/28648 |
Resumo: | The objective of this work was to evaluate the effects of irrigation and nitrogen fertilization on the bromatological quality, forage production, and botanical and structural composition of Tifton 85 (Cynodon sp.) pastures overseeded with black oat (Avena strigosa). Four treatments were evaluated in a 2 × 2 factorial scheme (irrigated and non-irrigated × fertilized and non-fertilized), with three replicates, in a completely randomized design. In irrigated paddocks, the irrigation system was activated when the soil matric potential reached a value equal to, or higher than, 10 kPa and 135 kg N ha-1 was applied to fertilized paddocks, divided into four applications. The forage mass pre- and post-grazing, total forage production, and the botanical, structural, and bromatological composition of the pastures were evaluated. No interaction was observed between the irrigation and nitrogen fertilization factors for any of the variables and no significant differences were observed in forage mass between pre- and post-grazing or in Tifton leaf and stem percentages. Nitrogen fertilization had a significant effect on forage production, which was 2626.41 kg dry matter (DM) ha-1 higher in fertilized pastures than in unfertilized pastures. In addition, fertilization resulted in a lower percentage of dead material (6.66%), higher percentage of oat leaves (30.84%), higher leaf:stem ratio (1:45), higher crude protein content (24.13%), lower levels of neutral detergent fiber (NDF) (64.57%) and acid detergent fiber (ADF) (32.86%), and higher in vitro dry matter digestibility (73.01%) than in unfertilized pastures. The use of irrigation did not influence total forage production, however, it resulted in pastures with lower NDF (65.97%) and ADF (33.54%), and higher in vitro dry matter digestibility (73.48%) than unirrigated pastures. Nitrogen fertilization produced improvements in pasture structure, associated with higher dry matter yield and bromatological quality, while irrigation only produced pastures with lower fiber content and greater digestibility. |
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Semina. Ciências Agrárias (Online) |
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Production and quality of Tifton 85 pastures overseeded with black oat: effects of irrigation and nitrogen fertilizationProdução e qualidade de pastagens de Tifton 85 sobressemeadas com aveia preta: efeitos da irrigação e adubação nitrogenadaBotanical componentsStructural componentsOverseedingTemperate pasture.Componentes botânicosComponentes estruturaisPastagem temperadaSobressemeadura.The objective of this work was to evaluate the effects of irrigation and nitrogen fertilization on the bromatological quality, forage production, and botanical and structural composition of Tifton 85 (Cynodon sp.) pastures overseeded with black oat (Avena strigosa). Four treatments were evaluated in a 2 × 2 factorial scheme (irrigated and non-irrigated × fertilized and non-fertilized), with three replicates, in a completely randomized design. In irrigated paddocks, the irrigation system was activated when the soil matric potential reached a value equal to, or higher than, 10 kPa and 135 kg N ha-1 was applied to fertilized paddocks, divided into four applications. The forage mass pre- and post-grazing, total forage production, and the botanical, structural, and bromatological composition of the pastures were evaluated. No interaction was observed between the irrigation and nitrogen fertilization factors for any of the variables and no significant differences were observed in forage mass between pre- and post-grazing or in Tifton leaf and stem percentages. Nitrogen fertilization had a significant effect on forage production, which was 2626.41 kg dry matter (DM) ha-1 higher in fertilized pastures than in unfertilized pastures. In addition, fertilization resulted in a lower percentage of dead material (6.66%), higher percentage of oat leaves (30.84%), higher leaf:stem ratio (1:45), higher crude protein content (24.13%), lower levels of neutral detergent fiber (NDF) (64.57%) and acid detergent fiber (ADF) (32.86%), and higher in vitro dry matter digestibility (73.01%) than in unfertilized pastures. The use of irrigation did not influence total forage production, however, it resulted in pastures with lower NDF (65.97%) and ADF (33.54%), and higher in vitro dry matter digestibility (73.48%) than unirrigated pastures. Nitrogen fertilization produced improvements in pasture structure, associated with higher dry matter yield and bromatological quality, while irrigation only produced pastures with lower fiber content and greater digestibility.O objetivo deste trabalho foi avaliar o efeito da irrigação e a adubação nitrogenada sobre a qualidade bromatológica, produção de forragem e a composição botânica e estrutural de pastagens de Tifton 85 (Cynodon sp.) sobressemeadas com aveia preta (Avena strigosa). Foram avaliados quatro tratamentos em um esquema fatorial 2x2 (irrigado e não irrigado x adubado e não adubado), com três repetições, no delineamento inteiramente casualizado. Em piquetes irrigados o sistema de irrigação foi acionado quando o potencial mátrico do solo atingia o valor igual ou superior a 10 kPa e em piquetes adubados foram aplicados 135 kg N ha-1, dividido em quatro aplicações. Foram avaliadas a massa de forragem no pré e pós pastejo, a produção total de forragem, a composição botânica, estrutural e bromatológica das pastagens. Não foram observadas interação entre os fatores irrigação e adubação nitrogenada para nenhuma das variáveis e nem diferenças significativas para os valores da massa de forragem no pré e pós pastejo e nas porcentagens de folhas e colmo de Tifton. Houve efeito da adubação nitrogenada sobre a produção de forragem, onde proporcionou incremento de 2.626,41 kg MS ha-1. Além disso, a adubação proporcionou menor porcentagem de material morto (6,66%), maior porcentagem de folhas de aveia (30,84%), maior relação folha:colmo (1,45), maior teor de proteína bruta (PB) (24,13%), menores teores de fibra em detergente neutro (FDN) (64,57%) e fibra em detergente ácido (FDA) (32,86%) e maior digestibilidade in vitro da matéria seca (73,01%). O uso da irrigação não influenciou a produção total de forragem, porém, proporcionou pastagens com menores teores de FDN (65,97%) e FDA (33,54%) e maior digestibilidade in vitro da matéria seca (73,48%). A adubação nitrogenada proporcionou melhorias na estrutura das pastagens, associadas à maior produção de matéria seca e melhor qualidade bromatológica, enquanto que a irrigação apenas proporcionou pastagens com menores teores de fibras e mais digestíveis.UEL2018-08-20info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionPesquisa de Campoapplication/pdfhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/2864810.5433/1679-0359.2018v39n5p2071Semina: Ciências Agrárias; Vol. 39 No. 5 (2018); 2071-2080Semina: Ciências Agrárias; v. 39 n. 5 (2018); 2071-20801679-03591676-546Xreponame:Semina. Ciências Agrárias (Online)instname:Universidade Estadual de Londrina (UEL)instacron:UELenghttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/28648/24252Copyright (c) 2018 Semina: Ciências Agráriashttp://creativecommons.org/licenses/by-nc/4.0info:eu-repo/semantics/openAccessFarias Filho, João de AssisPaula, Fabiana Luiza Matielo dePaula, Adalberto Luiz deParis, WagnerGhinzelli, FabrícioArend, Gustavo HenriqueMenezes, Luis Fernando Glasenapp de2022-10-20T18:01:20Zoai:ojs.pkp.sfu.ca:article/28648Revistahttp://www.uel.br/revistas/uel/index.php/semagrariasPUBhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/oaisemina.agrarias@uel.br1679-03591676-546Xopendoar:2022-10-20T18:01:20Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)false |
dc.title.none.fl_str_mv |
Production and quality of Tifton 85 pastures overseeded with black oat: effects of irrigation and nitrogen fertilization Produção e qualidade de pastagens de Tifton 85 sobressemeadas com aveia preta: efeitos da irrigação e adubação nitrogenada |
title |
Production and quality of Tifton 85 pastures overseeded with black oat: effects of irrigation and nitrogen fertilization |
spellingShingle |
Production and quality of Tifton 85 pastures overseeded with black oat: effects of irrigation and nitrogen fertilization Farias Filho, João de Assis Botanical components Structural components Overseeding Temperate pasture. Componentes botânicos Componentes estruturais Pastagem temperada Sobressemeadura. |
title_short |
Production and quality of Tifton 85 pastures overseeded with black oat: effects of irrigation and nitrogen fertilization |
title_full |
Production and quality of Tifton 85 pastures overseeded with black oat: effects of irrigation and nitrogen fertilization |
title_fullStr |
Production and quality of Tifton 85 pastures overseeded with black oat: effects of irrigation and nitrogen fertilization |
title_full_unstemmed |
Production and quality of Tifton 85 pastures overseeded with black oat: effects of irrigation and nitrogen fertilization |
title_sort |
Production and quality of Tifton 85 pastures overseeded with black oat: effects of irrigation and nitrogen fertilization |
author |
Farias Filho, João de Assis |
author_facet |
Farias Filho, João de Assis Paula, Fabiana Luiza Matielo de Paula, Adalberto Luiz de Paris, Wagner Ghinzelli, Fabrício Arend, Gustavo Henrique Menezes, Luis Fernando Glasenapp de |
author_role |
author |
author2 |
Paula, Fabiana Luiza Matielo de Paula, Adalberto Luiz de Paris, Wagner Ghinzelli, Fabrício Arend, Gustavo Henrique Menezes, Luis Fernando Glasenapp de |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Farias Filho, João de Assis Paula, Fabiana Luiza Matielo de Paula, Adalberto Luiz de Paris, Wagner Ghinzelli, Fabrício Arend, Gustavo Henrique Menezes, Luis Fernando Glasenapp de |
dc.subject.por.fl_str_mv |
Botanical components Structural components Overseeding Temperate pasture. Componentes botânicos Componentes estruturais Pastagem temperada Sobressemeadura. |
topic |
Botanical components Structural components Overseeding Temperate pasture. Componentes botânicos Componentes estruturais Pastagem temperada Sobressemeadura. |
description |
The objective of this work was to evaluate the effects of irrigation and nitrogen fertilization on the bromatological quality, forage production, and botanical and structural composition of Tifton 85 (Cynodon sp.) pastures overseeded with black oat (Avena strigosa). Four treatments were evaluated in a 2 × 2 factorial scheme (irrigated and non-irrigated × fertilized and non-fertilized), with three replicates, in a completely randomized design. In irrigated paddocks, the irrigation system was activated when the soil matric potential reached a value equal to, or higher than, 10 kPa and 135 kg N ha-1 was applied to fertilized paddocks, divided into four applications. The forage mass pre- and post-grazing, total forage production, and the botanical, structural, and bromatological composition of the pastures were evaluated. No interaction was observed between the irrigation and nitrogen fertilization factors for any of the variables and no significant differences were observed in forage mass between pre- and post-grazing or in Tifton leaf and stem percentages. Nitrogen fertilization had a significant effect on forage production, which was 2626.41 kg dry matter (DM) ha-1 higher in fertilized pastures than in unfertilized pastures. In addition, fertilization resulted in a lower percentage of dead material (6.66%), higher percentage of oat leaves (30.84%), higher leaf:stem ratio (1:45), higher crude protein content (24.13%), lower levels of neutral detergent fiber (NDF) (64.57%) and acid detergent fiber (ADF) (32.86%), and higher in vitro dry matter digestibility (73.01%) than in unfertilized pastures. The use of irrigation did not influence total forage production, however, it resulted in pastures with lower NDF (65.97%) and ADF (33.54%), and higher in vitro dry matter digestibility (73.48%) than unirrigated pastures. Nitrogen fertilization produced improvements in pasture structure, associated with higher dry matter yield and bromatological quality, while irrigation only produced pastures with lower fiber content and greater digestibility. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-08-20 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Pesquisa de Campo |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/28648 10.5433/1679-0359.2018v39n5p2071 |
url |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/28648 |
identifier_str_mv |
10.5433/1679-0359.2018v39n5p2071 |
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/28648/24252 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2018 Semina: Ciências Agrárias http://creativecommons.org/licenses/by-nc/4.0 info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2018 Semina: Ciências Agrárias 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. 39 No. 5 (2018); 2071-2080 Semina: Ciências Agrárias; v. 39 n. 5 (2018); 2071-2080 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_ |
1750315426165817344 |