Effect of urea and ammonium nitrate in top-dressing application on corn yield under no-till system

Detalhes bibliográficos
Autor(a) principal: Scherer, Eloi Erhard
Data de Publicação: 2021
Tipo de documento: Artigo
Idioma: por
Título da fonte: Agropecuária Catarinense (Online)
Texto Completo: https://publicacoes.epagri.sc.gov.br/rac/article/view/905
Resumo: To evaluate the efficience of nitrogen (N) sources and time of N application on corn yield, a fieldexperiment was carried out in a Typical Red Latosol (oxisol) in Chapecó, Santa Catarina State, Brazil. Theexperiment was conducted as completely randomized block design with the use of two top-dressed N sources (urea and ammonium nitrate) and four application time (total dose at plant emergence, 1/3 at emergence and 2/ 3 28 days later, and total dose at 14 and 28 days after plant emergence), plus an additional treatment without Nfertilization. The results showed that only the time of N application had influence on corn yield. Best resultsgenerally were obtained when total N dose was applied at plant emergence or when applied 1/3 of the total N at plant emergence and the remaining 28 days later. The source of N did not significantly affect corn yield. Since no significant differences were observed in the corn yield, the decision of using urea or ammonium nitrate for topdress application should be based on the cost per unity of N
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spelling Effect of urea and ammonium nitrate in top-dressing application on corn yield under no-till systemEficiência da uréia e do nitrato de amônio em adubação de cobertura para milho cultivado no sistema plantio diretoTo evaluate the efficience of nitrogen (N) sources and time of N application on corn yield, a fieldexperiment was carried out in a Typical Red Latosol (oxisol) in Chapecó, Santa Catarina State, Brazil. Theexperiment was conducted as completely randomized block design with the use of two top-dressed N sources (urea and ammonium nitrate) and four application time (total dose at plant emergence, 1/3 at emergence and 2/ 3 28 days later, and total dose at 14 and 28 days after plant emergence), plus an additional treatment without Nfertilization. The results showed that only the time of N application had influence on corn yield. Best resultsgenerally were obtained when total N dose was applied at plant emergence or when applied 1/3 of the total N at plant emergence and the remaining 28 days later. The source of N did not significantly affect corn yield. Since no significant differences were observed in the corn yield, the decision of using urea or ammonium nitrate for topdress application should be based on the cost per unity of N Com o objetivo de comparar a eficiência de duas fontes de nitrogênio (N) em diferentes épocas de aplicação da adubação de cobertura em milho, foi conduzido um experimento de campo em Latossolo Vermelhodistroférrico nos anos agrícolas 2001/02, 2002/03 e 2003/04, em Chapecó, SC. O delineamento experimental foi de blocos ao acaso com os tratamentos arranjados em fatorial 2 x 4, com dois fertilizantes (uréia e nitrato de amônio) e quatro épocas de aplicação do N (todo na emergência das plantas, 1/3 na emergência e o restante (2/3) 28 diasapós, e todo 14 e 28 dias após a emergência). Também foi incluído um tratamento sem adubação nitrogenada. O N foi aplicado na dose de 120kg/ha, a lanço, sem incorporação ao solo. Houve apenas efeito significativo para épocas de aplicação do adubo, obtendo-se melhores resultados com aplicação de todo N na emergência das plantas ouparcelado em duas vezes: 1/3 na emergência das plantas e o restante 28 dias após. Não foram constatadas diferenças significativas entre as fontes de N avaliadas, podendo ser utilizada em adubações de cobertura no milho a fonte com menor preço por unidade de N. Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina - Epagri2021-04-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://publicacoes.epagri.sc.gov.br/rac/article/view/905Agropecuária Catarinense Journal; Vol. 20 No. 3 (2007); 64-67Agropecuária Catarinense; v. 20 n. 3 (2007); 64-672525-60760103-0779reponame:Agropecuária Catarinense (Online)instname:Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina (Epagri)instacron:EPAGRIporhttps://publicacoes.epagri.sc.gov.br/rac/article/view/905/808Copyright (c) 2007 Agropecuaria catarinensehttps://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessScherer, Eloi Erhard2021-04-10T00:17:27Zoai:ojs.publicacoes.epagri.sc.gov.br:article/905Revistahttps://publicacoes.epagri.sc.gov.br/RAC/indexPUBhttps://publicacoes.epagri.sc.gov.br/index.php/RAC/oaieditoriarac@epagri.sc.gov.br || lamperuch@epagri.sc.gov.br2525-60760103-0779opendoar:2021-04-10T00:17:27Agropecuária Catarinense (Online) - Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina (Epagri)false
dc.title.none.fl_str_mv Effect of urea and ammonium nitrate in top-dressing application on corn yield under no-till system
Eficiência da uréia e do nitrato de amônio em adubação de cobertura para milho cultivado no sistema plantio direto
title Effect of urea and ammonium nitrate in top-dressing application on corn yield under no-till system
spellingShingle Effect of urea and ammonium nitrate in top-dressing application on corn yield under no-till system
Scherer, Eloi Erhard
title_short Effect of urea and ammonium nitrate in top-dressing application on corn yield under no-till system
title_full Effect of urea and ammonium nitrate in top-dressing application on corn yield under no-till system
title_fullStr Effect of urea and ammonium nitrate in top-dressing application on corn yield under no-till system
title_full_unstemmed Effect of urea and ammonium nitrate in top-dressing application on corn yield under no-till system
title_sort Effect of urea and ammonium nitrate in top-dressing application on corn yield under no-till system
author Scherer, Eloi Erhard
author_facet Scherer, Eloi Erhard
author_role author
dc.contributor.author.fl_str_mv Scherer, Eloi Erhard
description To evaluate the efficience of nitrogen (N) sources and time of N application on corn yield, a fieldexperiment was carried out in a Typical Red Latosol (oxisol) in Chapecó, Santa Catarina State, Brazil. Theexperiment was conducted as completely randomized block design with the use of two top-dressed N sources (urea and ammonium nitrate) and four application time (total dose at plant emergence, 1/3 at emergence and 2/ 3 28 days later, and total dose at 14 and 28 days after plant emergence), plus an additional treatment without Nfertilization. The results showed that only the time of N application had influence on corn yield. Best resultsgenerally were obtained when total N dose was applied at plant emergence or when applied 1/3 of the total N at plant emergence and the remaining 28 days later. The source of N did not significantly affect corn yield. Since no significant differences were observed in the corn yield, the decision of using urea or ammonium nitrate for topdress application should be based on the cost per unity of N
publishDate 2021
dc.date.none.fl_str_mv 2021-04-09
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://publicacoes.epagri.sc.gov.br/rac/article/view/905
url https://publicacoes.epagri.sc.gov.br/rac/article/view/905
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://publicacoes.epagri.sc.gov.br/rac/article/view/905/808
dc.rights.driver.fl_str_mv Copyright (c) 2007 Agropecuaria catarinense
https://creativecommons.org/licenses/by/4.0
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2007 Agropecuaria catarinense
https://creativecommons.org/licenses/by/4.0
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina - Epagri
publisher.none.fl_str_mv Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina - Epagri
dc.source.none.fl_str_mv Agropecuária Catarinense Journal; Vol. 20 No. 3 (2007); 64-67
Agropecuária Catarinense; v. 20 n. 3 (2007); 64-67
2525-6076
0103-0779
reponame:Agropecuária Catarinense (Online)
instname:Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina (Epagri)
instacron:EPAGRI
instname_str Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina (Epagri)
instacron_str EPAGRI
institution EPAGRI
reponame_str Agropecuária Catarinense (Online)
collection Agropecuária Catarinense (Online)
repository.name.fl_str_mv Agropecuária Catarinense (Online) - Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina (Epagri)
repository.mail.fl_str_mv editoriarac@epagri.sc.gov.br || lamperuch@epagri.sc.gov.br
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