Single and split nitrogen application on the forage yield, morphogenesis, chemical composition, and tissue nitrogen fractions of Cynodon nlemfuensis under mob grazing

Detalhes bibliográficos
Autor(a) principal: Matos, Oscar Ivan Tuz
Data de Publicação: 2022
Outros Autores: Paris, Wagner, Costa, Olmar Antônio Denardin, Paula, Fabiana Luiza Matielo de, Paula, Adalberto Luiz de, Cavazzana, Jefferson Felipe, Souza, Saimon de Souza e, Menezes, Luis Fernando Glasenapp de
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/43779
Resumo: The aim of this study was to evaluate the forage production, nutritional value (including protein fractions), and morphogenic characteristics of African star grass on nitrogen fertilizer in a single application and split applications of two and four, under mob grazing. The study was conducted on a 1.5 ha area with well-established African star grass (Cynodon nlemfuensis). The area was divided into 18 paddocks of 400 m2. for three treatments and six replications that were assigned through a randomized block design. The treatments were: Nap1 =Single N application; Nap2= split into two N applications; and Nap4: split into four N applications. Fertilizer application was 200 kg ha-1 of N in topdressing. Pasture was monitored weekly by sward height. Grazing began when the forage reached between 25 and 30 cm in height and ceased at 10 cm. In almost all months evaluated, Nap1 recorded the highest forage production, daily accumulation rate and available forage mass. Some morphogenic characteristics changed between the fertilization strategies, particularly in the months with greater water availability. The chemical composition did not fluctuate between treatments. African star grass can be fertilized with a single application of nitrogen at 200 kg ha-1 to attain greater forage mass and proportion of leaves, without any changes to the chemical composition and nitrogen fractions. These components were modified by the vegetative phase of the forage.
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spelling Single and split nitrogen application on the forage yield, morphogenesis, chemical composition, and tissue nitrogen fractions of Cynodon nlemfuensis under mob grazingAplicação de nitrogênio em dose única ou parcelada na produção de forragem, morfogênese, composição química e frações de nitrogênio tecidual de Cynodon nlemfuensis sob pastejoAfrican star grassTropical grassesTopdressing fertilizationForageProtein fractions.Grama estrela africanaGramíneas tropicaisFertilização em coberturaForragemFracionamento de proteína.The aim of this study was to evaluate the forage production, nutritional value (including protein fractions), and morphogenic characteristics of African star grass on nitrogen fertilizer in a single application and split applications of two and four, under mob grazing. The study was conducted on a 1.5 ha area with well-established African star grass (Cynodon nlemfuensis). The area was divided into 18 paddocks of 400 m2. for three treatments and six replications that were assigned through a randomized block design. The treatments were: Nap1 =Single N application; Nap2= split into two N applications; and Nap4: split into four N applications. Fertilizer application was 200 kg ha-1 of N in topdressing. Pasture was monitored weekly by sward height. Grazing began when the forage reached between 25 and 30 cm in height and ceased at 10 cm. In almost all months evaluated, Nap1 recorded the highest forage production, daily accumulation rate and available forage mass. Some morphogenic characteristics changed between the fertilization strategies, particularly in the months with greater water availability. The chemical composition did not fluctuate between treatments. African star grass can be fertilized with a single application of nitrogen at 200 kg ha-1 to attain greater forage mass and proportion of leaves, without any changes to the chemical composition and nitrogen fractions. These components were modified by the vegetative phase of the forage.O objetivo deste estudo foi avaliar a produção de forragem, o valor nutricional, frações protéicas e as características morfogênicas da grama estrela africana estabelecida (Cynodon nlemfuensis) sob adubação nitrogenada parcelada em duas, quatro ou em uma única aplicação. O estudo foi conduzido em uma área de 1,5 ha, que foi dividida em 18 piquetes de 400 m2. O experimento foi delineado estatisticamente em blocos ao acaso, constando de três tratamentos e seis repetições. Os tratamentos corresponderam a aplicação de 200 kg ha-1 de N em cobertura na forma de ureia: Nap1 = aplicação única; Nap2 = parcelado em duas aplicações; e Nap4: parcelado em quatro aplicações. A pastagem foi monitorada semanalmente a partir da medição da altura do pasto. O rebaixamento da pastagem foi realizado por novilhas leiteiras da raça holandesa com 12 meses de idade. Os animais entravam nas parcelas quando a pastagem apresentava altura de 25 a 30 cm e saiam com 10 cm. Em quase todos os meses avaliados, Nap1 apresentou a maior produção de forragem, taxa de acúmulo diário e massa de forragem disponível. Algumas características morfogênicas mudaram entre as estratégias de fertilização, principalmente nos meses de maior disponibilidade hídrica. A composição química não oscilou entre os tratamentos. O capim-estrela africano pode ser fertilizado com uma única aplicação de nitrogênio de 200 kg ha-1 para obter maior quantidade de forragem e proporção de folhas, sem alteração da composição química e das frações do nitrogênio. Esses componentes foram modificados apenas pelo ciclo vegetativo da forragem foram modificados apenas pelo ciclo vegetativo da forragem.UEL2022-02-28info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionPesquisa de CampoPesquisa de Campoapplication/pdfhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/4377910.5433/1679-0359.2022v43n3p973Semina: Ciências Agrárias; Vol. 43 No. 3 (2022); 973-986Semina: Ciências Agrárias; v. 43 n. 3 (2022); 973-9861679-03591676-546Xreponame:Semina. Ciências Agrárias (Online)instname:Universidade Estadual de Londrina (UEL)instacron:UELenghttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/43779/31628Copyright (c) 2022 Semina: Ciências Agráriashttp://creativecommons.org/licenses/by-nc/4.0info:eu-repo/semantics/openAccessMatos, Oscar Ivan TuzParis, WagnerCosta, Olmar Antônio DenardinPaula, Fabiana Luiza Matielo dePaula, Adalberto Luiz deCavazzana, Jefferson FelipeSouza, Saimon de Souza eMenezes, Luis Fernando Glasenapp de2022-09-16T23:58:31Zoai:ojs.pkp.sfu.ca:article/43779Revistahttp://www.uel.br/revistas/uel/index.php/semagrariasPUBhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/oaisemina.agrarias@uel.br1679-03591676-546Xopendoar:2022-09-16T23:58:31Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)false
dc.title.none.fl_str_mv Single and split nitrogen application on the forage yield, morphogenesis, chemical composition, and tissue nitrogen fractions of Cynodon nlemfuensis under mob grazing
Aplicação de nitrogênio em dose única ou parcelada na produção de forragem, morfogênese, composição química e frações de nitrogênio tecidual de Cynodon nlemfuensis sob pastejo
title Single and split nitrogen application on the forage yield, morphogenesis, chemical composition, and tissue nitrogen fractions of Cynodon nlemfuensis under mob grazing
spellingShingle Single and split nitrogen application on the forage yield, morphogenesis, chemical composition, and tissue nitrogen fractions of Cynodon nlemfuensis under mob grazing
Matos, Oscar Ivan Tuz
African star grass
Tropical grasses
Topdressing fertilization
Forage
Protein fractions.
Grama estrela africana
Gramíneas tropicais
Fertilização em cobertura
Forragem
Fracionamento de proteína.
title_short Single and split nitrogen application on the forage yield, morphogenesis, chemical composition, and tissue nitrogen fractions of Cynodon nlemfuensis under mob grazing
title_full Single and split nitrogen application on the forage yield, morphogenesis, chemical composition, and tissue nitrogen fractions of Cynodon nlemfuensis under mob grazing
title_fullStr Single and split nitrogen application on the forage yield, morphogenesis, chemical composition, and tissue nitrogen fractions of Cynodon nlemfuensis under mob grazing
title_full_unstemmed Single and split nitrogen application on the forage yield, morphogenesis, chemical composition, and tissue nitrogen fractions of Cynodon nlemfuensis under mob grazing
title_sort Single and split nitrogen application on the forage yield, morphogenesis, chemical composition, and tissue nitrogen fractions of Cynodon nlemfuensis under mob grazing
author Matos, Oscar Ivan Tuz
author_facet Matos, Oscar Ivan Tuz
Paris, Wagner
Costa, Olmar Antônio Denardin
Paula, Fabiana Luiza Matielo de
Paula, Adalberto Luiz de
Cavazzana, Jefferson Felipe
Souza, Saimon de Souza e
Menezes, Luis Fernando Glasenapp de
author_role author
author2 Paris, Wagner
Costa, Olmar Antônio Denardin
Paula, Fabiana Luiza Matielo de
Paula, Adalberto Luiz de
Cavazzana, Jefferson Felipe
Souza, Saimon de Souza e
Menezes, Luis Fernando Glasenapp de
author2_role author
author
author
author
author
author
author
dc.contributor.author.fl_str_mv Matos, Oscar Ivan Tuz
Paris, Wagner
Costa, Olmar Antônio Denardin
Paula, Fabiana Luiza Matielo de
Paula, Adalberto Luiz de
Cavazzana, Jefferson Felipe
Souza, Saimon de Souza e
Menezes, Luis Fernando Glasenapp de
dc.subject.por.fl_str_mv African star grass
Tropical grasses
Topdressing fertilization
Forage
Protein fractions.
Grama estrela africana
Gramíneas tropicais
Fertilização em cobertura
Forragem
Fracionamento de proteína.
topic African star grass
Tropical grasses
Topdressing fertilization
Forage
Protein fractions.
Grama estrela africana
Gramíneas tropicais
Fertilização em cobertura
Forragem
Fracionamento de proteína.
description The aim of this study was to evaluate the forage production, nutritional value (including protein fractions), and morphogenic characteristics of African star grass on nitrogen fertilizer in a single application and split applications of two and four, under mob grazing. The study was conducted on a 1.5 ha area with well-established African star grass (Cynodon nlemfuensis). The area was divided into 18 paddocks of 400 m2. for three treatments and six replications that were assigned through a randomized block design. The treatments were: Nap1 =Single N application; Nap2= split into two N applications; and Nap4: split into four N applications. Fertilizer application was 200 kg ha-1 of N in topdressing. Pasture was monitored weekly by sward height. Grazing began when the forage reached between 25 and 30 cm in height and ceased at 10 cm. In almost all months evaluated, Nap1 recorded the highest forage production, daily accumulation rate and available forage mass. Some morphogenic characteristics changed between the fertilization strategies, particularly in the months with greater water availability. The chemical composition did not fluctuate between treatments. African star grass can be fertilized with a single application of nitrogen at 200 kg ha-1 to attain greater forage mass and proportion of leaves, without any changes to the chemical composition and nitrogen fractions. These components were modified by the vegetative phase of the forage.
publishDate 2022
dc.date.none.fl_str_mv 2022-02-28
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Pesquisa de Campo
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/43779
10.5433/1679-0359.2022v43n3p973
url https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/43779
identifier_str_mv 10.5433/1679-0359.2022v43n3p973
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/43779/31628
dc.rights.driver.fl_str_mv Copyright (c) 2022 Semina: Ciências Agrárias
http://creativecommons.org/licenses/by-nc/4.0
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2022 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. 43 No. 3 (2022); 973-986
Semina: Ciências Agrárias; v. 43 n. 3 (2022); 973-986
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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