Nitrogen fertilization in corn with urea coated with different sources of polymers
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Semina. Ciências Agrárias (Online) |
Texto Completo: | https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/13168 |
Resumo: | In view of theoretic increase in efficiency of nitrogen fertilizers for controlled release, this study aimed to evaluate the effect of nitrogen, using conventional urea and ureas coated by different polymers, in the leaf N content, leaf chlorophyll index, components production and grain yield of irrigated corn in growing season and second crop in the savannah region. The experiments were conducted at experimental area belonging to UNESP – Ilha Solteira, located in Selvíria – MS in a dystrophic Red Latosol (Haplustox), clayey texture. The statistical design was randomized blocks, with four repetitions, in a 4 x 4 factorial arrangement, being four nitrogen doses (0, 40, 80 and 120 kg ha-1) applied at sidedressing and four urea sources (a conventional urea and three coated with polymers in different compositions and concentrations). The coated ureas are not efficient under the soil and climate conditions studied of the savanna, because they provided results similar to the conventional urea for the production components and grain yield of corn in the first and second crop. The increment of nitrogen doses increase linearly the leaf N content and grain yield of corn in the first and second crop. |
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Semina. Ciências Agrárias (Online) |
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Nitrogen fertilization in corn with urea coated with different sources of polymersAdubação nitrogenada na cultura do milho com ureia revestida por diferentes fontes de polímerosZea mays L.NitrogenCoated fertilizerNo-tillage systemSavannah soil.Zea mays L.NitrogênioFertilizante revestidoSistema de semeadura diretaSolo de cerrado.Fertilidade do solo In view of theoretic increase in efficiency of nitrogen fertilizers for controlled release, this study aimed to evaluate the effect of nitrogen, using conventional urea and ureas coated by different polymers, in the leaf N content, leaf chlorophyll index, components production and grain yield of irrigated corn in growing season and second crop in the savannah region. The experiments were conducted at experimental area belonging to UNESP – Ilha Solteira, located in Selvíria – MS in a dystrophic Red Latosol (Haplustox), clayey texture. The statistical design was randomized blocks, with four repetitions, in a 4 x 4 factorial arrangement, being four nitrogen doses (0, 40, 80 and 120 kg ha-1) applied at sidedressing and four urea sources (a conventional urea and three coated with polymers in different compositions and concentrations). The coated ureas are not efficient under the soil and climate conditions studied of the savanna, because they provided results similar to the conventional urea for the production components and grain yield of corn in the first and second crop. The increment of nitrogen doses increase linearly the leaf N content and grain yield of corn in the first and second crop.Tendo em vista o teórico aumento de eficiência dos fertilizantes nitrogenados de liberação controlada, objetivou-se avaliar o efeito de doses de nitrogênio, usando ureia convencional e ureias revestidas por diferentes polímeros, no teor de N foliar, índice de clorofila foliar, altura de plantas, diâmetro do segundo internódio, altura de inserção da primeira espiga, componentes de produção e produtividade de grãos de milho irrigado, em cultivo safra e safrinha na região de cerrado. Os experimentos foram desenvolvidos em área experimental da UNESP – Campus de Ilha Solteira, em Selvíria – MS, num Latossolo Vermelho distrófico, textura argilosa. O delineamento estatístico foi o de blocos casualizados, com quatro repetições, em arranjo fatorial (4 x 4), com quatro doses de nitrogênio (0, 40, 80 e 120 kg ha-1) aplicadas em cobertura e quatro fontes de ureia (uma convencional e três revestidas por polímeros em diferentes composições e concentrações). As ureias revestidas não são eficientes nas condições edafoclimáticas de cerrado de baixa altitude estudada, pois proporcionam resultados semelhantes à ureia convencional para o teor de nitrogênio foliar, índice de clorofila foliar, altura de plantas, diâmetro do segundo internódio, altura de inserção da primeira espiga, componentes de produção e a produtividade de grãos de milho, tanto no cultivo safra como na safrinha. O incremento das doses de nitrogênio aumentou linearmente o teor de N foliar e a produtividade de grãos do milho cultivado na safra e na safrinha.UEL2014-04-28info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionPesquisa Empírica de Campoapplication/pdfhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/1316810.5433/1679-0359.2014v35n2p659Semina: Ciências Agrárias; Vol. 35 No. 2 (2014); 659-670Semina: Ciências Agrárias; v. 35 n. 2 (2014); 659-6701679-03591676-546Xreponame:Semina. Ciências Agrárias (Online)instname:Universidade Estadual de Londrina (UEL)instacron:UELporhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/13168/pdf_266Valderrama, MárcioBuzetti, SalatiérTeixeira Filho, Marcelo Carvalho MinhotoBenett, Cleiton Gredson SabinAndreotti, Marceloinfo:eu-repo/semantics/openAccess2015-11-19T18:35:51Zoai:ojs.pkp.sfu.ca:article/13168Revistahttp://www.uel.br/revistas/uel/index.php/semagrariasPUBhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/oaisemina.agrarias@uel.br1679-03591676-546Xopendoar:2015-11-19T18:35:51Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)false |
dc.title.none.fl_str_mv |
Nitrogen fertilization in corn with urea coated with different sources of polymers Adubação nitrogenada na cultura do milho com ureia revestida por diferentes fontes de polímeros |
title |
Nitrogen fertilization in corn with urea coated with different sources of polymers |
spellingShingle |
Nitrogen fertilization in corn with urea coated with different sources of polymers Valderrama, Márcio Zea mays L. Nitrogen Coated fertilizer No-tillage system Savannah soil. Zea mays L. Nitrogênio Fertilizante revestido Sistema de semeadura direta Solo de cerrado. Fertilidade do solo |
title_short |
Nitrogen fertilization in corn with urea coated with different sources of polymers |
title_full |
Nitrogen fertilization in corn with urea coated with different sources of polymers |
title_fullStr |
Nitrogen fertilization in corn with urea coated with different sources of polymers |
title_full_unstemmed |
Nitrogen fertilization in corn with urea coated with different sources of polymers |
title_sort |
Nitrogen fertilization in corn with urea coated with different sources of polymers |
author |
Valderrama, Márcio |
author_facet |
Valderrama, Márcio Buzetti, Salatiér Teixeira Filho, Marcelo Carvalho Minhoto Benett, Cleiton Gredson Sabin Andreotti, Marcelo |
author_role |
author |
author2 |
Buzetti, Salatiér Teixeira Filho, Marcelo Carvalho Minhoto Benett, Cleiton Gredson Sabin Andreotti, Marcelo |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Valderrama, Márcio Buzetti, Salatiér Teixeira Filho, Marcelo Carvalho Minhoto Benett, Cleiton Gredson Sabin Andreotti, Marcelo |
dc.subject.por.fl_str_mv |
Zea mays L. Nitrogen Coated fertilizer No-tillage system Savannah soil. Zea mays L. Nitrogênio Fertilizante revestido Sistema de semeadura direta Solo de cerrado. Fertilidade do solo |
topic |
Zea mays L. Nitrogen Coated fertilizer No-tillage system Savannah soil. Zea mays L. Nitrogênio Fertilizante revestido Sistema de semeadura direta Solo de cerrado. Fertilidade do solo |
description |
In view of theoretic increase in efficiency of nitrogen fertilizers for controlled release, this study aimed to evaluate the effect of nitrogen, using conventional urea and ureas coated by different polymers, in the leaf N content, leaf chlorophyll index, components production and grain yield of irrigated corn in growing season and second crop in the savannah region. The experiments were conducted at experimental area belonging to UNESP – Ilha Solteira, located in Selvíria – MS in a dystrophic Red Latosol (Haplustox), clayey texture. The statistical design was randomized blocks, with four repetitions, in a 4 x 4 factorial arrangement, being four nitrogen doses (0, 40, 80 and 120 kg ha-1) applied at sidedressing and four urea sources (a conventional urea and three coated with polymers in different compositions and concentrations). The coated ureas are not efficient under the soil and climate conditions studied of the savanna, because they provided results similar to the conventional urea for the production components and grain yield of corn in the first and second crop. The increment of nitrogen doses increase linearly the leaf N content and grain yield of corn in the first and second crop. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-04-28 |
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/13168 10.5433/1679-0359.2014v35n2p659 |
url |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/13168 |
identifier_str_mv |
10.5433/1679-0359.2014v35n2p659 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/13168/pdf_266 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
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. 35 No. 2 (2014); 659-670 Semina: Ciências Agrárias; v. 35 n. 2 (2014); 659-670 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_ |
1799306068290961408 |