NITROGEN RATES AND SIDE-DRESSING TIMING ON SWEET CORN SEED PRODUCTION AND PHYSIOLOGICAL POTENTIAL
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Revista Caatinga |
DOI: | 10.1590/1983-21252018v31n210rc |
Texto Completo: | https://periodicos.ufersa.edu.br/caatinga/article/view/6778 |
Resumo: | Sweet corn is an important crop because of its seeds with high total sugar and low starch contents. As common corn, this group requires an adequate amount of nitrogen to reach high yields. However, the studies on nitrogen and sweet corn are performed for ear yield instead of seed yield. As seeds are the main propagation method for this species, we proposed to evaluate the effects of nitrogen rates as side-dressing at different plant stages of a sweet corn seed production. Sweet corn seeds (variety BR 400) were sown in Latosol (Oxisol), and a 3×2+1 factorial scheme was designed with three nitrogen rates (40, 80, and 120 kg ha-1) at two plant stages (V6 and R1) plus the control (no nitrogen side-dressing). The evaluated variables were seed yield, protein content, P and Zn contents, germination, and vigor rates. We concluded that nitrogen applied at a rate of 120 kg ha-1 at V6 increases seed yield and maintains unaltered the protein content in seeds of sweet corn (BR 400 variety). Neither germination nor seed vigor increases when nitrogen rates are increased or administered at different stages of plant development. We also noted a slight decrease in P content or an increase in Zn content of seeds at low nitrogen rates; however, they are insufficient to promote changes in the physiological potential of sweet corn seeds. |
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NITROGEN RATES AND SIDE-DRESSING TIMING ON SWEET CORN SEED PRODUCTION AND PHYSIOLOGICAL POTENTIALDOSES DE NITROGÊNIO E ÉPOCA DE COBERTURA PARA PRODUÇÃO E POTENCIAL FISIOLÓGICO DE SEMENTES EM MILHO DOCEZea mays. Yield. Protein content. Germination. Vigor.Zea mays. Produtividade. Teor de proteína. Germinação. Vigor.Sweet corn is an important crop because of its seeds with high total sugar and low starch contents. As common corn, this group requires an adequate amount of nitrogen to reach high yields. However, the studies on nitrogen and sweet corn are performed for ear yield instead of seed yield. As seeds are the main propagation method for this species, we proposed to evaluate the effects of nitrogen rates as side-dressing at different plant stages of a sweet corn seed production. Sweet corn seeds (variety BR 400) were sown in Latosol (Oxisol), and a 3×2+1 factorial scheme was designed with three nitrogen rates (40, 80, and 120 kg ha-1) at two plant stages (V6 and R1) plus the control (no nitrogen side-dressing). The evaluated variables were seed yield, protein content, P and Zn contents, germination, and vigor rates. We concluded that nitrogen applied at a rate of 120 kg ha-1 at V6 increases seed yield and maintains unaltered the protein content in seeds of sweet corn (BR 400 variety). Neither germination nor seed vigor increases when nitrogen rates are increased or administered at different stages of plant development. We also noted a slight decrease in P content or an increase in Zn content of seeds at low nitrogen rates; however, they are insufficient to promote changes in the physiological potential of sweet corn seeds.O milho doce é uma cultura importante por causa do seu tipo de sementes com índice elevado dos açúcares totais e baixo índice do amido. Como o milho comum, este necessita de quantidade adequada de nitrogênio para atingir altas produtividades, no entanto, os estudos que envolvem nitrogênio e milho doce são realizados para o rendimento das espigas e não para a produção de sementes. Como a semente é o principal método de propagação dessa espécie, foi avaliado os efeitos das doses de nitrogênio em cobertura em diferentes estádios fenológicos para produção e potencial fisiológico de sementes de milho doce. As sementes de milho doce (variedade BR 400) foram semeadas em Latossolo e um esquema fatorial de tratamento 3 × 2 + 1 foi instalado com três doses de nitrogênio 40, 80 e 120 kg ha-1 e dois estádios fenológicos (V6 e R1) mais o controle (sem nitrogênio em cobertura). Foram avaliadas a produtividade de sementes, teores de proteína, P e Zn, germinação e vigor. Como conclusão, o nitrogênio fornecido em V6 a 120 kg ha-1 aumenta a produtividade de sementes e mantém os teores de proteína inalterados. A germinação da semente e o vigor não aumentam quando as taxas de nitrogênio são acrescidas ou fornecidas em diferentes estádios fenológicos. Diminuição ligeira do teor de P ou o aumento do teor de Zn nas sementes são observados a uma dose baixa de nitrogênio entretanto não suficientes para promover alterações no potencial fisiológico das sementes do milho doce.Universidade Federal Rural do Semi-Árido2018-04-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://periodicos.ufersa.edu.br/caatinga/article/view/677810.1590/1983-21252018v31n210rcREVISTA CAATINGA; Vol. 31 No. 2 (2018); 344-351Revista Caatinga; v. 31 n. 2 (2018); 344-3511983-21250100-316Xreponame:Revista Caatingainstname:Universidade Federal Rural do Semi-Árido (UFERSA)instacron:UFERSAenghttps://periodicos.ufersa.edu.br/caatinga/article/view/6778/pdfCopyright (c) 2018 Revista Caatingainfo:eu-repo/semantics/openAccessZucareli, ClaudemirBazzo, José Henrique BizzarriSilva, Josemeyre BonifácioCosta, Denis SantiagoFonseca, Inês Cristina Batista2023-07-20T12:49:32Zoai:ojs.periodicos.ufersa.edu.br:article/6778Revistahttps://periodicos.ufersa.edu.br/index.php/caatinga/indexPUBhttps://periodicos.ufersa.edu.br/index.php/caatinga/oaipatricio@ufersa.edu.br|| caatinga@ufersa.edu.br1983-21250100-316Xopendoar:2024-04-29T09:46:30.902660Revista Caatinga - Universidade Federal Rural do Semi-Árido (UFERSA)true |
dc.title.none.fl_str_mv |
NITROGEN RATES AND SIDE-DRESSING TIMING ON SWEET CORN SEED PRODUCTION AND PHYSIOLOGICAL POTENTIAL DOSES DE NITROGÊNIO E ÉPOCA DE COBERTURA PARA PRODUÇÃO E POTENCIAL FISIOLÓGICO DE SEMENTES EM MILHO DOCE |
title |
NITROGEN RATES AND SIDE-DRESSING TIMING ON SWEET CORN SEED PRODUCTION AND PHYSIOLOGICAL POTENTIAL |
spellingShingle |
NITROGEN RATES AND SIDE-DRESSING TIMING ON SWEET CORN SEED PRODUCTION AND PHYSIOLOGICAL POTENTIAL NITROGEN RATES AND SIDE-DRESSING TIMING ON SWEET CORN SEED PRODUCTION AND PHYSIOLOGICAL POTENTIAL Zucareli, Claudemir Zea mays. Yield. Protein content. Germination. Vigor. Zea mays. Produtividade. Teor de proteína. Germinação. Vigor. Zucareli, Claudemir Zea mays. Yield. Protein content. Germination. Vigor. Zea mays. Produtividade. Teor de proteína. Germinação. Vigor. |
title_short |
NITROGEN RATES AND SIDE-DRESSING TIMING ON SWEET CORN SEED PRODUCTION AND PHYSIOLOGICAL POTENTIAL |
title_full |
NITROGEN RATES AND SIDE-DRESSING TIMING ON SWEET CORN SEED PRODUCTION AND PHYSIOLOGICAL POTENTIAL |
title_fullStr |
NITROGEN RATES AND SIDE-DRESSING TIMING ON SWEET CORN SEED PRODUCTION AND PHYSIOLOGICAL POTENTIAL NITROGEN RATES AND SIDE-DRESSING TIMING ON SWEET CORN SEED PRODUCTION AND PHYSIOLOGICAL POTENTIAL |
title_full_unstemmed |
NITROGEN RATES AND SIDE-DRESSING TIMING ON SWEET CORN SEED PRODUCTION AND PHYSIOLOGICAL POTENTIAL NITROGEN RATES AND SIDE-DRESSING TIMING ON SWEET CORN SEED PRODUCTION AND PHYSIOLOGICAL POTENTIAL |
title_sort |
NITROGEN RATES AND SIDE-DRESSING TIMING ON SWEET CORN SEED PRODUCTION AND PHYSIOLOGICAL POTENTIAL |
author |
Zucareli, Claudemir |
author_facet |
Zucareli, Claudemir Zucareli, Claudemir Bazzo, José Henrique Bizzarri Silva, Josemeyre Bonifácio Costa, Denis Santiago Fonseca, Inês Cristina Batista Bazzo, José Henrique Bizzarri Silva, Josemeyre Bonifácio Costa, Denis Santiago Fonseca, Inês Cristina Batista |
author_role |
author |
author2 |
Bazzo, José Henrique Bizzarri Silva, Josemeyre Bonifácio Costa, Denis Santiago Fonseca, Inês Cristina Batista |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Zucareli, Claudemir Bazzo, José Henrique Bizzarri Silva, Josemeyre Bonifácio Costa, Denis Santiago Fonseca, Inês Cristina Batista |
dc.subject.por.fl_str_mv |
Zea mays. Yield. Protein content. Germination. Vigor. Zea mays. Produtividade. Teor de proteína. Germinação. Vigor. |
topic |
Zea mays. Yield. Protein content. Germination. Vigor. Zea mays. Produtividade. Teor de proteína. Germinação. Vigor. |
description |
Sweet corn is an important crop because of its seeds with high total sugar and low starch contents. As common corn, this group requires an adequate amount of nitrogen to reach high yields. However, the studies on nitrogen and sweet corn are performed for ear yield instead of seed yield. As seeds are the main propagation method for this species, we proposed to evaluate the effects of nitrogen rates as side-dressing at different plant stages of a sweet corn seed production. Sweet corn seeds (variety BR 400) were sown in Latosol (Oxisol), and a 3×2+1 factorial scheme was designed with three nitrogen rates (40, 80, and 120 kg ha-1) at two plant stages (V6 and R1) plus the control (no nitrogen side-dressing). The evaluated variables were seed yield, protein content, P and Zn contents, germination, and vigor rates. We concluded that nitrogen applied at a rate of 120 kg ha-1 at V6 increases seed yield and maintains unaltered the protein content in seeds of sweet corn (BR 400 variety). Neither germination nor seed vigor increases when nitrogen rates are increased or administered at different stages of plant development. We also noted a slight decrease in P content or an increase in Zn content of seeds at low nitrogen rates; however, they are insufficient to promote changes in the physiological potential of sweet corn seeds. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-04-06 |
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://periodicos.ufersa.edu.br/caatinga/article/view/6778 10.1590/1983-21252018v31n210rc |
url |
https://periodicos.ufersa.edu.br/caatinga/article/view/6778 |
identifier_str_mv |
10.1590/1983-21252018v31n210rc |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://periodicos.ufersa.edu.br/caatinga/article/view/6778/pdf |
dc.rights.driver.fl_str_mv |
Copyright (c) 2018 Revista Caatinga info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2018 Revista Caatinga |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal Rural do Semi-Árido |
publisher.none.fl_str_mv |
Universidade Federal Rural do Semi-Árido |
dc.source.none.fl_str_mv |
REVISTA CAATINGA; Vol. 31 No. 2 (2018); 344-351 Revista Caatinga; v. 31 n. 2 (2018); 344-351 1983-2125 0100-316X reponame:Revista Caatinga instname:Universidade Federal Rural do Semi-Árido (UFERSA) instacron:UFERSA |
instname_str |
Universidade Federal Rural do Semi-Árido (UFERSA) |
instacron_str |
UFERSA |
institution |
UFERSA |
reponame_str |
Revista Caatinga |
collection |
Revista Caatinga |
repository.name.fl_str_mv |
Revista Caatinga - Universidade Federal Rural do Semi-Árido (UFERSA) |
repository.mail.fl_str_mv |
patricio@ufersa.edu.br|| caatinga@ufersa.edu.br |
_version_ |
1822181056506232832 |
dc.identifier.doi.none.fl_str_mv |
10.1590/1983-21252018v31n210rc |