Management of nitrogen fertilization on agronomic and nutritional characteristics in second crop corn

Detalhes bibliográficos
Autor(a) principal: Bueno, Daiane de Souza
Data de Publicação: 2020
Outros Autores: Lima, Sebastião Ferreira de, Blanco, Matildes, Coradi, Paulo Carteri
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Bioscience journal (Online)
DOI: 10.14393/BJ-v36n2a2020-45166
Texto Completo: https://seer.ufu.br/index.php/biosciencejournal/article/view/45166
Resumo: Fertilization management, mainly nitrogen, is one of the factors that most directly affect corn grain yield. Nitrogen dynamics in the soil is quite complex and its main source currently used in corn production, the urea, undergo intense losses in its conventional form, mainly by volatilization and leaching. Thus, the aim of this study was to assess the effect of forms, sources, and times of nitrogen application on the second crop corn. The experiment was conducted in 2016 in the Fundação Chapadão, Chapadão do Sul, MS, Brazil. The sources conventional urea, polymer-coated urea, and foliar N (8 treatments) were used as follows: control (without N addition), conventional urea (single in V3 and split in V3 and V6), polymer-coated urea (single in V3 and split in V3 and V6), conventional urea + foliar N (conventional urea in V6 and foliar in pre-flowering), polymer-coated urea + foliar N (polymer-coated urea in V6 and foliar in pre-flowering), and foliar N (split in V6 and pre-flowering). The variables stem diameter, ear index, ear length, number of grains per row, number of rows per ear, plant height, first ear height, leaf chlorophyll index, leaf N index, leaf values of Ca, Mg, Fe, Zn, Mn, and Cu, 100-grain weight, and grain yield were assessed. Nitrogen application in the form of conventional urea, polymer-coated urea, and foliar N (single or split) for second crop corn does not result in distinct benefits for the crop. Thus, attention should be paid to the commercialization of the product, which has prices established according to nitrogen forms, but without result, for example, in grain yield, which in fact will compose the producer income. The applied nitrogen form and mode of application were positive only to increase the contents of Ca, Mg, Zn, and Mn in the leaves of second crop corn. Ca was favored by the use of conventional urea and split conventional urea, Mg and Mn were only benefited by foliar N application, and Zn was benefited by the use of conventional urea, split conventional urea, conventional urea + foliar N, and polymer-coated urea+foliar N.
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spelling Management of nitrogen fertilization on agronomic and nutritional characteristics in second crop cornManejo da fertilização nitrogenada sobre características agronômicas e nutricionais em milho de segunda safraFertilizationN sourcesFoliar applicationAgricultural SciencesFontes de N.Fertilization management, mainly nitrogen, is one of the factors that most directly affect corn grain yield. Nitrogen dynamics in the soil is quite complex and its main source currently used in corn production, the urea, undergo intense losses in its conventional form, mainly by volatilization and leaching. Thus, the aim of this study was to assess the effect of forms, sources, and times of nitrogen application on the second crop corn. The experiment was conducted in 2016 in the Fundação Chapadão, Chapadão do Sul, MS, Brazil. The sources conventional urea, polymer-coated urea, and foliar N (8 treatments) were used as follows: control (without N addition), conventional urea (single in V3 and split in V3 and V6), polymer-coated urea (single in V3 and split in V3 and V6), conventional urea + foliar N (conventional urea in V6 and foliar in pre-flowering), polymer-coated urea + foliar N (polymer-coated urea in V6 and foliar in pre-flowering), and foliar N (split in V6 and pre-flowering). The variables stem diameter, ear index, ear length, number of grains per row, number of rows per ear, plant height, first ear height, leaf chlorophyll index, leaf N index, leaf values of Ca, Mg, Fe, Zn, Mn, and Cu, 100-grain weight, and grain yield were assessed. Nitrogen application in the form of conventional urea, polymer-coated urea, and foliar N (single or split) for second crop corn does not result in distinct benefits for the crop. Thus, attention should be paid to the commercialization of the product, which has prices established according to nitrogen forms, but without result, for example, in grain yield, which in fact will compose the producer income. The applied nitrogen form and mode of application were positive only to increase the contents of Ca, Mg, Zn, and Mn in the leaves of second crop corn. Ca was favored by the use of conventional urea and split conventional urea, Mg and Mn were only benefited by foliar N application, and Zn was benefited by the use of conventional urea, split conventional urea, conventional urea + foliar N, and polymer-coated urea+foliar N.O manejo da adubação, principalmente a nitrogenada, é um dos fatores que afetam mais diretamente a produtividade de grãos de milho. A dinâmica do nitrogênio no solo é bastante complexa e a principal fonte atualmente utilizada na produção do milho, a ureia, em sua forma convencional, sofre perdas intensas, principalmente por volatilização e lixiviação. Assim, o objetivo deste trabalho foi avaliar o efeito de formas, fontes e épocas de aplicação de nitrogênio na cultura do milho segunda safra. O experimento foi conduzido no ano de 2016 na Fundação Chapadão, no município de Chapadão do Sul, MS, Brasil. Foram utilizadas as fontes ureia convencional, ureia revestida com polímero e N foliar (8 tratamentos), sendo eles: testemunha (sem adição de N); ureia convencional (todo aplicado no estádio V3) e  (parcelada em V3 e V6); ureia com polímero (todo em V3) e (parcelada em V3 e V6); Ureia convencional + N foliar (ureia convencional em V6 e foliar em pré-florada); Ureia com polímero + N foliar (ureia com polímero em V6 e foliar em pré-florada) e N foliar (parcelado em V6 e pré-florada). Foram avaliados o diâmetro de colmo, índice de espiga, comprimento de espiga, número de grãos por fileira, número de fileiras por espiga, altura de plantas, altura de inserção da primeira espiga, índice de clorofila foliar, índice de N foliar, valores foliares de Ca, Mg, Fe, Zn, Mn e Cu, massa de 100 grãos e produtividade de grãos. A aplicação do nitrogênio na forma de ureia convencional, ureia com polímeros e foliar, de forma única ou parcelada, para o milho segunda safra, não resulta em benefícios distintos para a cultura. Assim, deve-se ficar atento a comercialização do produto, que tem preços estabelecidos de acordo com as formas do nitrogênio, mas sem resultado, por exemplo, na produtividade de grãos, que irá de fato compor a renda do produtor. A forma do nitrogênio aplicado e o modo de aplicação foram positivos apenas para aumentar os teores de Ca, Mg, Zn e Mn nas folhas do milho segunda safra. O Ca foi favorecido pelo uso da ureia convencional e convencional parcelada, o Mg e o Mn foram beneficiados apenas pela aplicação de N foliar, enquanto o Zn foi beneficiado pelo uso da ureia convencional, convencional parcelada, convencional + N foliar e ureia com polímero + N foliar.EDUFU2020-02-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.ufu.br/index.php/biosciencejournal/article/view/4516610.14393/BJ-v36n2a2020-45166Bioscience Journal ; Vol. 36 No. 2 (2020): Mar./Apr.; 439-448Bioscience Journal ; v. 36 n. 2 (2020): Mar./Abr; 439-4481981-3163reponame:Bioscience journal (Online)instname:Universidade Federal de Uberlândia (UFU)instacron:UFUenghttps://seer.ufu.br/index.php/biosciencejournal/article/view/45166/28097Brazil; ContemporaryCopyright (c) 2020 Daiane de Souza Bueno, Sebastião Ferreira de Lima, Matildes Blanco, Paulo Carteri Coradihttps://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessBueno, Daiane de SouzaLima, Sebastião Ferreira deBlanco, MatildesCoradi, Paulo Carteri2022-06-22T12:35:00Zoai:ojs.www.seer.ufu.br:article/45166Revistahttps://seer.ufu.br/index.php/biosciencejournalPUBhttps://seer.ufu.br/index.php/biosciencejournal/oaibiosciencej@ufu.br||1981-31631516-3725opendoar:2022-06-22T12:35Bioscience journal (Online) - Universidade Federal de Uberlândia (UFU)false
dc.title.none.fl_str_mv Management of nitrogen fertilization on agronomic and nutritional characteristics in second crop corn
Manejo da fertilização nitrogenada sobre características agronômicas e nutricionais em milho de segunda safra
title Management of nitrogen fertilization on agronomic and nutritional characteristics in second crop corn
spellingShingle Management of nitrogen fertilization on agronomic and nutritional characteristics in second crop corn
Management of nitrogen fertilization on agronomic and nutritional characteristics in second crop corn
Bueno, Daiane de Souza
Fertilization
N sources
Foliar application
Agricultural Sciences
Fontes de N.
Bueno, Daiane de Souza
Fertilization
N sources
Foliar application
Agricultural Sciences
Fontes de N.
title_short Management of nitrogen fertilization on agronomic and nutritional characteristics in second crop corn
title_full Management of nitrogen fertilization on agronomic and nutritional characteristics in second crop corn
title_fullStr Management of nitrogen fertilization on agronomic and nutritional characteristics in second crop corn
Management of nitrogen fertilization on agronomic and nutritional characteristics in second crop corn
title_full_unstemmed Management of nitrogen fertilization on agronomic and nutritional characteristics in second crop corn
Management of nitrogen fertilization on agronomic and nutritional characteristics in second crop corn
title_sort Management of nitrogen fertilization on agronomic and nutritional characteristics in second crop corn
author Bueno, Daiane de Souza
author_facet Bueno, Daiane de Souza
Bueno, Daiane de Souza
Lima, Sebastião Ferreira de
Blanco, Matildes
Coradi, Paulo Carteri
Lima, Sebastião Ferreira de
Blanco, Matildes
Coradi, Paulo Carteri
author_role author
author2 Lima, Sebastião Ferreira de
Blanco, Matildes
Coradi, Paulo Carteri
author2_role author
author
author
dc.contributor.author.fl_str_mv Bueno, Daiane de Souza
Lima, Sebastião Ferreira de
Blanco, Matildes
Coradi, Paulo Carteri
dc.subject.por.fl_str_mv Fertilization
N sources
Foliar application
Agricultural Sciences
Fontes de N.
topic Fertilization
N sources
Foliar application
Agricultural Sciences
Fontes de N.
description Fertilization management, mainly nitrogen, is one of the factors that most directly affect corn grain yield. Nitrogen dynamics in the soil is quite complex and its main source currently used in corn production, the urea, undergo intense losses in its conventional form, mainly by volatilization and leaching. Thus, the aim of this study was to assess the effect of forms, sources, and times of nitrogen application on the second crop corn. The experiment was conducted in 2016 in the Fundação Chapadão, Chapadão do Sul, MS, Brazil. The sources conventional urea, polymer-coated urea, and foliar N (8 treatments) were used as follows: control (without N addition), conventional urea (single in V3 and split in V3 and V6), polymer-coated urea (single in V3 and split in V3 and V6), conventional urea + foliar N (conventional urea in V6 and foliar in pre-flowering), polymer-coated urea + foliar N (polymer-coated urea in V6 and foliar in pre-flowering), and foliar N (split in V6 and pre-flowering). The variables stem diameter, ear index, ear length, number of grains per row, number of rows per ear, plant height, first ear height, leaf chlorophyll index, leaf N index, leaf values of Ca, Mg, Fe, Zn, Mn, and Cu, 100-grain weight, and grain yield were assessed. Nitrogen application in the form of conventional urea, polymer-coated urea, and foliar N (single or split) for second crop corn does not result in distinct benefits for the crop. Thus, attention should be paid to the commercialization of the product, which has prices established according to nitrogen forms, but without result, for example, in grain yield, which in fact will compose the producer income. The applied nitrogen form and mode of application were positive only to increase the contents of Ca, Mg, Zn, and Mn in the leaves of second crop corn. Ca was favored by the use of conventional urea and split conventional urea, Mg and Mn were only benefited by foliar N application, and Zn was benefited by the use of conventional urea, split conventional urea, conventional urea + foliar N, and polymer-coated urea+foliar N.
publishDate 2020
dc.date.none.fl_str_mv 2020-02-11
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://seer.ufu.br/index.php/biosciencejournal/article/view/45166
10.14393/BJ-v36n2a2020-45166
url https://seer.ufu.br/index.php/biosciencejournal/article/view/45166
identifier_str_mv 10.14393/BJ-v36n2a2020-45166
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://seer.ufu.br/index.php/biosciencejournal/article/view/45166/28097
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info:eu-repo/semantics/openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/4.0
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.coverage.none.fl_str_mv Brazil; Contemporary
dc.publisher.none.fl_str_mv EDUFU
publisher.none.fl_str_mv EDUFU
dc.source.none.fl_str_mv Bioscience Journal ; Vol. 36 No. 2 (2020): Mar./Apr.; 439-448
Bioscience Journal ; v. 36 n. 2 (2020): Mar./Abr; 439-448
1981-3163
reponame:Bioscience journal (Online)
instname:Universidade Federal de Uberlândia (UFU)
instacron:UFU
instname_str Universidade Federal de Uberlândia (UFU)
instacron_str UFU
institution UFU
reponame_str Bioscience journal (Online)
collection Bioscience journal (Online)
repository.name.fl_str_mv Bioscience journal (Online) - Universidade Federal de Uberlândia (UFU)
repository.mail.fl_str_mv biosciencej@ufu.br||
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dc.identifier.doi.none.fl_str_mv 10.14393/BJ-v36n2a2020-45166