Production of annual ryegrass with different doses of nitrogen fertilization in topdressing
Autor(a) principal: | |
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Data de Publicação: | 2019 |
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/34036 |
Resumo: | The objective of this study was to assess the growth of annual ryegrass (Lolium multiflorum) cv. BRS Ponteio with different doses of nitrogen applied in the pasture, thereby adjusting their growth to the exponential growth model. A randomized block design was used with five nitrogen application rates (0, 150, 250, 350, and 450 kg N ha-1) and four replicates, applied in installments. Each plot measured 9 m2. On April 15, 2014, 25 kg ha-1 of viable pure seeds of annual ryegrass were sown at a depth of 0.02 m, in 18 rows spaced at 0.17 m in each plot. Growth in the control treatment (zero nitrogen) pasture lasted 167 days with only three cuts, whereas in pastures treated with 350 and 450 kg N ha-1, growth was extended for an additional 45 days with a 333% increase in the number of cuts. The pastures were used for the same duration (188 days) in the treatments with 150 and 250 kg N ha-1, however, increased nitrogen resulted in two additional cuts and a shorter time interval between cuts. The time interval between each cut and the degree-days interacted dynamically causing distinct growth. Growth of the annual ryegrass BRS Ponteio without nitrogen application is poor and cannot be represented even by a first order linear model. The application of nitrogen topdressing, in the form of urea, decreases the time interval between cuts, increases the dry matter production per hectare, stimulates this production, and follows the exponential growth model. |
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Semina. Ciências Agrárias (Online) |
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Production of annual ryegrass with different doses of nitrogen fertilization in topdressingProdução de azevém sob doses de adubação nitrogenada em coberturaExponential growth modelDegree-daysDry matterThermal sumRate of accumulationUrea.Modelo de crescimento exponencialGraus-diaMatéria secaSoma térmicaTaxa de acúmuloUreia.The objective of this study was to assess the growth of annual ryegrass (Lolium multiflorum) cv. BRS Ponteio with different doses of nitrogen applied in the pasture, thereby adjusting their growth to the exponential growth model. A randomized block design was used with five nitrogen application rates (0, 150, 250, 350, and 450 kg N ha-1) and four replicates, applied in installments. Each plot measured 9 m2. On April 15, 2014, 25 kg ha-1 of viable pure seeds of annual ryegrass were sown at a depth of 0.02 m, in 18 rows spaced at 0.17 m in each plot. Growth in the control treatment (zero nitrogen) pasture lasted 167 days with only three cuts, whereas in pastures treated with 350 and 450 kg N ha-1, growth was extended for an additional 45 days with a 333% increase in the number of cuts. The pastures were used for the same duration (188 days) in the treatments with 150 and 250 kg N ha-1, however, increased nitrogen resulted in two additional cuts and a shorter time interval between cuts. The time interval between each cut and the degree-days interacted dynamically causing distinct growth. Growth of the annual ryegrass BRS Ponteio without nitrogen application is poor and cannot be represented even by a first order linear model. The application of nitrogen topdressing, in the form of urea, decreases the time interval between cuts, increases the dry matter production per hectare, stimulates this production, and follows the exponential growth model.Objetivou-se estudar a produção da cultura de azevém anual (Lolium multiflorum) BRS Ponteio com diferentes doses de nitrogênio aplicadas em cobertura ajustando-as ao modelo de crescimento exponencial. Foi utilizado delineamento completamente casualizado com quatro repetições por tratamentos com parcelas de 9m2 de área útil, nas quais foram distribuídos os tratamentos: 0, 150, 250, 350 e 450 quilogramas de nitrogênio por hectare aplicados de forma parcelada. No dia 15 de abril de 2014 realizou-se a semeadura do azevém na densidade de 25 kg de sementes puras viáveis ha-1 na profundidade de 0,02 m, com 18 linhas em cada parcela espaçadas 0,17 m. No tratamento testemunha (zero de nitrogênio) o pasto durou 167 dias com apenas três cortes, enquanto nas doses de 350 e 450 kg de nitrogênio por hectare a espécie estendeu-se por mais 45 dias com número de cortes 333% maior. Nos tratamentos 150 e 250 quilogramas de nitrogênio por hectare verificou-se que o tempo de utilização da pastagem foi o mesmo, 188 dias, mas houve diferença de dois cortes, ou seja, as diferentes doses de nitrogênio impactam sobre os intervalos entre cortes. O intervalo de dias entre cada corte e os graus-dia interagem de forma dinâmica ocasionando crescimento distintos. O cultivo de azevém anual BRS Ponteio sem aplicação de nitrogênio é limitado e não apresenta ajuste nem mesmo a modelo linear de primeira ordem. A aplicação de nitrogênio em cobertura na forma de ureia diminui o intervalo entre cortes e aumenta a produção de matéria seca por hectare. A aplicação de nitrogênio em cobertura na forma de ureia estimula a produção de matéria seca, seguindo o modelo de crescimento exponencial.UEL2019-05-21info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionPesquisa empírica de campoapplication/pdfhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/3403610.5433/1679-0359.2019v40n3p1329Semina: Ciências Agrárias; Vol. 40 No. 3 (2019); 1329-1338Semina: Ciências Agrárias; v. 40 n. 3 (2019); 1329-13381679-03591676-546Xreponame:Semina. Ciências Agrárias (Online)instname:Universidade Estadual de Londrina (UEL)instacron:UELenghttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/34036/25430Copyright (c) 2019 Semina: Ciências Agráriashttp://creativecommons.org/licenses/by-nc/4.0info:eu-repo/semantics/openAccessBolke, Delvacir RezendeHaygert-Velho, Ione Maria PereiraTimm, Luiz CarlosAlessio, Dileta Regina MoroMittelmann, AndréaFerreira, Otoniel Geter LauzLima, Luís Henrique CortezeVelho, João Pedro2022-10-19T13:38:07Zoai:ojs.pkp.sfu.ca:article/34036Revistahttp://www.uel.br/revistas/uel/index.php/semagrariasPUBhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/oaisemina.agrarias@uel.br1679-03591676-546Xopendoar:2022-10-19T13:38:07Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)false |
dc.title.none.fl_str_mv |
Production of annual ryegrass with different doses of nitrogen fertilization in topdressing Produção de azevém sob doses de adubação nitrogenada em cobertura |
title |
Production of annual ryegrass with different doses of nitrogen fertilization in topdressing |
spellingShingle |
Production of annual ryegrass with different doses of nitrogen fertilization in topdressing Bolke, Delvacir Rezende Exponential growth model Degree-days Dry matter Thermal sum Rate of accumulation Urea. Modelo de crescimento exponencial Graus-dia Matéria seca Soma térmica Taxa de acúmulo Ureia. |
title_short |
Production of annual ryegrass with different doses of nitrogen fertilization in topdressing |
title_full |
Production of annual ryegrass with different doses of nitrogen fertilization in topdressing |
title_fullStr |
Production of annual ryegrass with different doses of nitrogen fertilization in topdressing |
title_full_unstemmed |
Production of annual ryegrass with different doses of nitrogen fertilization in topdressing |
title_sort |
Production of annual ryegrass with different doses of nitrogen fertilization in topdressing |
author |
Bolke, Delvacir Rezende |
author_facet |
Bolke, Delvacir Rezende Haygert-Velho, Ione Maria Pereira Timm, Luiz Carlos Alessio, Dileta Regina Moro Mittelmann, Andréa Ferreira, Otoniel Geter Lauz Lima, Luís Henrique Corteze Velho, João Pedro |
author_role |
author |
author2 |
Haygert-Velho, Ione Maria Pereira Timm, Luiz Carlos Alessio, Dileta Regina Moro Mittelmann, Andréa Ferreira, Otoniel Geter Lauz Lima, Luís Henrique Corteze Velho, João Pedro |
author2_role |
author author author author author author author |
dc.contributor.author.fl_str_mv |
Bolke, Delvacir Rezende Haygert-Velho, Ione Maria Pereira Timm, Luiz Carlos Alessio, Dileta Regina Moro Mittelmann, Andréa Ferreira, Otoniel Geter Lauz Lima, Luís Henrique Corteze Velho, João Pedro |
dc.subject.por.fl_str_mv |
Exponential growth model Degree-days Dry matter Thermal sum Rate of accumulation Urea. Modelo de crescimento exponencial Graus-dia Matéria seca Soma térmica Taxa de acúmulo Ureia. |
topic |
Exponential growth model Degree-days Dry matter Thermal sum Rate of accumulation Urea. Modelo de crescimento exponencial Graus-dia Matéria seca Soma térmica Taxa de acúmulo Ureia. |
description |
The objective of this study was to assess the growth of annual ryegrass (Lolium multiflorum) cv. BRS Ponteio with different doses of nitrogen applied in the pasture, thereby adjusting their growth to the exponential growth model. A randomized block design was used with five nitrogen application rates (0, 150, 250, 350, and 450 kg N ha-1) and four replicates, applied in installments. Each plot measured 9 m2. On April 15, 2014, 25 kg ha-1 of viable pure seeds of annual ryegrass were sown at a depth of 0.02 m, in 18 rows spaced at 0.17 m in each plot. Growth in the control treatment (zero nitrogen) pasture lasted 167 days with only three cuts, whereas in pastures treated with 350 and 450 kg N ha-1, growth was extended for an additional 45 days with a 333% increase in the number of cuts. The pastures were used for the same duration (188 days) in the treatments with 150 and 250 kg N ha-1, however, increased nitrogen resulted in two additional cuts and a shorter time interval between cuts. The time interval between each cut and the degree-days interacted dynamically causing distinct growth. Growth of the annual ryegrass BRS Ponteio without nitrogen application is poor and cannot be represented even by a first order linear model. The application of nitrogen topdressing, in the form of urea, decreases the time interval between cuts, increases the dry matter production per hectare, stimulates this production, and follows the exponential growth model. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-05-21 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Pesquisa empírica de campo |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/34036 10.5433/1679-0359.2019v40n3p1329 |
url |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/34036 |
identifier_str_mv |
10.5433/1679-0359.2019v40n3p1329 |
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/34036/25430 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2019 Semina: Ciências Agrárias http://creativecommons.org/licenses/by-nc/4.0 info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2019 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. 40 No. 3 (2019); 1329-1338 Semina: Ciências Agrárias; v. 40 n. 3 (2019); 1329-1338 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_ |
1799306080366362624 |