Optimal plant density and nitrogen rates for improving off-season corn yields in Brazil
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Scientia Agrícola (Online) |
Texto Completo: | https://www.revistas.usp.br/sa/article/view/157049 |
Resumo: | Integrating plant density and nitrogen (N) management is a strategy for improving corn yields, especially for off-season corn production in the tropics. This study tested the hypothesis that increasing plant densities and N rates promotes yield gains for off-season corn production in high-yielding environments. The aim of the study was to investigate the yield performances of two hybrid versions (DKB PRO and DKB PRO3) submitted to three plant densities (55,000; 65,000 and 75,000 plants ha−1) and four N rates (control, 60, 120 and 180 kg ha−1 N). Field trials were undertaken at Uberlândia-MG (site1 and 2) and Pedro Afonso-TO (site 3), Brazil from which data on corn yield parameters were collected and analyzed. Multivariate analysis separated the three trial areas into two groups, presenting high (sites 1 and 2) and low yields (site 3), which were related to weather conditions. There was no influence of a hybrid version or plant densities on crop yields at site 1 or 2. In contrast, there was a positive response to increasing plant densities and the use of DKB PRO3 at site 3. A significant response to N was observed at sites 2 and 3, following a plateau model. Our results suggest that N application rates and plant densities do have the potential to increase off-season corn yields in low yielding environments. |
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Optimal plant density and nitrogen rates for improving off-season corn yields in BrazilZea mayshybridpopulationcorn yieldsecond-cropIntegrating plant density and nitrogen (N) management is a strategy for improving corn yields, especially for off-season corn production in the tropics. This study tested the hypothesis that increasing plant densities and N rates promotes yield gains for off-season corn production in high-yielding environments. The aim of the study was to investigate the yield performances of two hybrid versions (DKB PRO and DKB PRO3) submitted to three plant densities (55,000; 65,000 and 75,000 plants ha−1) and four N rates (control, 60, 120 and 180 kg ha−1 N). Field trials were undertaken at Uberlândia-MG (site1 and 2) and Pedro Afonso-TO (site 3), Brazil from which data on corn yield parameters were collected and analyzed. Multivariate analysis separated the three trial areas into two groups, presenting high (sites 1 and 2) and low yields (site 3), which were related to weather conditions. There was no influence of a hybrid version or plant densities on crop yields at site 1 or 2. In contrast, there was a positive response to increasing plant densities and the use of DKB PRO3 at site 3. A significant response to N was observed at sites 2 and 3, following a plateau model. Our results suggest that N application rates and plant densities do have the potential to increase off-season corn yields in low yielding environments.Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz2019-04-17info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://www.revistas.usp.br/sa/article/view/15704910.1590/1678-992x-2017-0295Scientia Agricola; v. 76 n. 4 (2019); 344-352Scientia Agricola; Vol. 76 No. 4 (2019); 344-352Scientia Agricola; Vol. 76 Núm. 4 (2019); 344-3521678-992X0103-9016reponame:Scientia Agrícola (Online)instname:Universidade de São Paulo (USP)instacron:USPenghttps://www.revistas.usp.br/sa/article/view/157049/152433Copyright (c) 2019 Scientia Agricolainfo:eu-repo/semantics/openAccessFaria, Italo Kaye Pinho deVieira, José Luís VilelaTenelli, SarahAlmeida, Rodrigo Estevam Munhoz deCampos, Leonardo José MottaCosta, Rodrigo Veras daZavaschi, EduardoAlmeida, Risely Ferraz deCarneiro, Leandro de Mello e SilvaOtto, Rafael2019-04-17T17:38:13Zoai:revistas.usp.br:article/157049Revistahttp://revistas.usp.br/sa/indexPUBhttps://old.scielo.br/oai/scielo-oai.phpscientia@usp.br||alleoni@usp.br1678-992X0103-9016opendoar:2019-04-17T17:38:13Scientia Agrícola (Online) - Universidade de São Paulo (USP)false |
dc.title.none.fl_str_mv |
Optimal plant density and nitrogen rates for improving off-season corn yields in Brazil |
title |
Optimal plant density and nitrogen rates for improving off-season corn yields in Brazil |
spellingShingle |
Optimal plant density and nitrogen rates for improving off-season corn yields in Brazil Faria, Italo Kaye Pinho de Zea mays hybrid population corn yield second-crop |
title_short |
Optimal plant density and nitrogen rates for improving off-season corn yields in Brazil |
title_full |
Optimal plant density and nitrogen rates for improving off-season corn yields in Brazil |
title_fullStr |
Optimal plant density and nitrogen rates for improving off-season corn yields in Brazil |
title_full_unstemmed |
Optimal plant density and nitrogen rates for improving off-season corn yields in Brazil |
title_sort |
Optimal plant density and nitrogen rates for improving off-season corn yields in Brazil |
author |
Faria, Italo Kaye Pinho de |
author_facet |
Faria, Italo Kaye Pinho de Vieira, José Luís Vilela Tenelli, Sarah Almeida, Rodrigo Estevam Munhoz de Campos, Leonardo José Motta Costa, Rodrigo Veras da Zavaschi, Eduardo Almeida, Risely Ferraz de Carneiro, Leandro de Mello e Silva Otto, Rafael |
author_role |
author |
author2 |
Vieira, José Luís Vilela Tenelli, Sarah Almeida, Rodrigo Estevam Munhoz de Campos, Leonardo José Motta Costa, Rodrigo Veras da Zavaschi, Eduardo Almeida, Risely Ferraz de Carneiro, Leandro de Mello e Silva Otto, Rafael |
author2_role |
author author author author author author author author author |
dc.contributor.author.fl_str_mv |
Faria, Italo Kaye Pinho de Vieira, José Luís Vilela Tenelli, Sarah Almeida, Rodrigo Estevam Munhoz de Campos, Leonardo José Motta Costa, Rodrigo Veras da Zavaschi, Eduardo Almeida, Risely Ferraz de Carneiro, Leandro de Mello e Silva Otto, Rafael |
dc.subject.por.fl_str_mv |
Zea mays hybrid population corn yield second-crop |
topic |
Zea mays hybrid population corn yield second-crop |
description |
Integrating plant density and nitrogen (N) management is a strategy for improving corn yields, especially for off-season corn production in the tropics. This study tested the hypothesis that increasing plant densities and N rates promotes yield gains for off-season corn production in high-yielding environments. The aim of the study was to investigate the yield performances of two hybrid versions (DKB PRO and DKB PRO3) submitted to three plant densities (55,000; 65,000 and 75,000 plants ha−1) and four N rates (control, 60, 120 and 180 kg ha−1 N). Field trials were undertaken at Uberlândia-MG (site1 and 2) and Pedro Afonso-TO (site 3), Brazil from which data on corn yield parameters were collected and analyzed. Multivariate analysis separated the three trial areas into two groups, presenting high (sites 1 and 2) and low yields (site 3), which were related to weather conditions. There was no influence of a hybrid version or plant densities on crop yields at site 1 or 2. In contrast, there was a positive response to increasing plant densities and the use of DKB PRO3 at site 3. A significant response to N was observed at sites 2 and 3, following a plateau model. Our results suggest that N application rates and plant densities do have the potential to increase off-season corn yields in low yielding environments. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-04-17 |
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://www.revistas.usp.br/sa/article/view/157049 10.1590/1678-992x-2017-0295 |
url |
https://www.revistas.usp.br/sa/article/view/157049 |
identifier_str_mv |
10.1590/1678-992x-2017-0295 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://www.revistas.usp.br/sa/article/view/157049/152433 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2019 Scientia Agricola info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2019 Scientia Agricola |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz |
publisher.none.fl_str_mv |
Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz |
dc.source.none.fl_str_mv |
Scientia Agricola; v. 76 n. 4 (2019); 344-352 Scientia Agricola; Vol. 76 No. 4 (2019); 344-352 Scientia Agricola; Vol. 76 Núm. 4 (2019); 344-352 1678-992X 0103-9016 reponame:Scientia Agrícola (Online) instname:Universidade de São Paulo (USP) instacron:USP |
instname_str |
Universidade de São Paulo (USP) |
instacron_str |
USP |
institution |
USP |
reponame_str |
Scientia Agrícola (Online) |
collection |
Scientia Agrícola (Online) |
repository.name.fl_str_mv |
Scientia Agrícola (Online) - Universidade de São Paulo (USP) |
repository.mail.fl_str_mv |
scientia@usp.br||alleoni@usp.br |
_version_ |
1787713261655818240 |