ATRAZINE REDUCES THE CRITICAL PERIOD OF WEED INTERFERENCE ON NARROW ROW CORN
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/S0100-83582016340400012 http://hdl.handle.net/11449/159253 |
Resumo: | The objective was to determine whether a change occurs in the critical period of weed interference prevention in narrow row corn with the use of atrazine and whether there is influence of the herbicide on crop yield components. The treatments consisted of periods without or with an initial weed control (0, 21, 35, 49, 63, 77, and 91 days after emergence), with or without application of atrazine in spikely post-emergence. The experiment was carried out in a 2 x 7 randomized blocks design (with and without weed control and seven periods with three replications). The use or not of atrazine was arranged in a split plot design. The most important weed species were Senecio brasiliensis, Urochloa plantaginea, Conyza bonariensis, Sida rhombifolia, and Solanum spp. Corn yield reduced by 15% and 18% with and without application of atrazine, respectively. The number of grains per spike and corn yield were negatively influenced by coexistence with weeds, while the number of rows per spike, the diameter and length of spike were not affected. Corn yield components were not affected by the use of atrazine. The critical period of weed interference prevention was 35 days without atrazine and 23 days with application of atrazine. There is a reduction of the critical period of weed interference prevention on narrow row corn by using atrazine, with no influence of the herbicide on crop yield. |
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ATRAZINE REDUCES THE CRITICAL PERIOD OF WEED INTERFERENCE ON NARROW ROW CORNherbicideperiod of coexistenceZea maysThe objective was to determine whether a change occurs in the critical period of weed interference prevention in narrow row corn with the use of atrazine and whether there is influence of the herbicide on crop yield components. The treatments consisted of periods without or with an initial weed control (0, 21, 35, 49, 63, 77, and 91 days after emergence), with or without application of atrazine in spikely post-emergence. The experiment was carried out in a 2 x 7 randomized blocks design (with and without weed control and seven periods with three replications). The use or not of atrazine was arranged in a split plot design. The most important weed species were Senecio brasiliensis, Urochloa plantaginea, Conyza bonariensis, Sida rhombifolia, and Solanum spp. Corn yield reduced by 15% and 18% with and without application of atrazine, respectively. The number of grains per spike and corn yield were negatively influenced by coexistence with weeds, while the number of rows per spike, the diameter and length of spike were not affected. Corn yield components were not affected by the use of atrazine. The critical period of weed interference prevention was 35 days without atrazine and 23 days with application of atrazine. There is a reduction of the critical period of weed interference prevention on narrow row corn by using atrazine, with no influence of the herbicide on crop yield.FAPESCCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Empresa Pesquisa Agropecuaria & Extensao Rural Sa, Rio Fortuna, SC, BrazilUniv Estado Santa Catarina, Lages, SC, BrazilUniv Estadual Paulista, Jaboticabal, SP, BrazilUniv Estadual Paulista, Dracena, SP, BrazilUniv Estadual Paulista, Jaboticabal, SP, BrazilUniv Estadual Paulista, Dracena, SP, BrazilUniv Federal VicosaEmpresa Pesquisa Agropecuaria & Extensao Rural SaUniv Estado Santa CatarinaUniversidade Estadual Paulista (Unesp)Padilha, M.Barroso, A. A. M. [UNESP]Carvalho, L. B. [UNESP]Costa, F. R.Bianco, S. [UNESP]2018-11-26T15:37:38Z2018-11-26T15:37:38Z2016-10-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article721-727application/pdfhttp://dx.doi.org/10.1590/S0100-83582016340400012Planta Daninha. Vicosa: Univ Federal Vicosa, v. 34, n. 4, p. 721-727, 2016.0100-8358http://hdl.handle.net/11449/15925310.1590/S0100-83582016340400012S0100-83582016000400721WOS:000390436500012S0100-83582016000400721.pdfWeb of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengPlanta Daninha0,365info:eu-repo/semantics/openAccess2023-11-03T06:13:34Zoai:repositorio.unesp.br:11449/159253Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T16:51:18.581227Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
ATRAZINE REDUCES THE CRITICAL PERIOD OF WEED INTERFERENCE ON NARROW ROW CORN |
title |
ATRAZINE REDUCES THE CRITICAL PERIOD OF WEED INTERFERENCE ON NARROW ROW CORN |
spellingShingle |
ATRAZINE REDUCES THE CRITICAL PERIOD OF WEED INTERFERENCE ON NARROW ROW CORN Padilha, M. herbicide period of coexistence Zea mays |
title_short |
ATRAZINE REDUCES THE CRITICAL PERIOD OF WEED INTERFERENCE ON NARROW ROW CORN |
title_full |
ATRAZINE REDUCES THE CRITICAL PERIOD OF WEED INTERFERENCE ON NARROW ROW CORN |
title_fullStr |
ATRAZINE REDUCES THE CRITICAL PERIOD OF WEED INTERFERENCE ON NARROW ROW CORN |
title_full_unstemmed |
ATRAZINE REDUCES THE CRITICAL PERIOD OF WEED INTERFERENCE ON NARROW ROW CORN |
title_sort |
ATRAZINE REDUCES THE CRITICAL PERIOD OF WEED INTERFERENCE ON NARROW ROW CORN |
author |
Padilha, M. |
author_facet |
Padilha, M. Barroso, A. A. M. [UNESP] Carvalho, L. B. [UNESP] Costa, F. R. Bianco, S. [UNESP] |
author_role |
author |
author2 |
Barroso, A. A. M. [UNESP] Carvalho, L. B. [UNESP] Costa, F. R. Bianco, S. [UNESP] |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Empresa Pesquisa Agropecuaria & Extensao Rural Sa Univ Estado Santa Catarina Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Padilha, M. Barroso, A. A. M. [UNESP] Carvalho, L. B. [UNESP] Costa, F. R. Bianco, S. [UNESP] |
dc.subject.por.fl_str_mv |
herbicide period of coexistence Zea mays |
topic |
herbicide period of coexistence Zea mays |
description |
The objective was to determine whether a change occurs in the critical period of weed interference prevention in narrow row corn with the use of atrazine and whether there is influence of the herbicide on crop yield components. The treatments consisted of periods without or with an initial weed control (0, 21, 35, 49, 63, 77, and 91 days after emergence), with or without application of atrazine in spikely post-emergence. The experiment was carried out in a 2 x 7 randomized blocks design (with and without weed control and seven periods with three replications). The use or not of atrazine was arranged in a split plot design. The most important weed species were Senecio brasiliensis, Urochloa plantaginea, Conyza bonariensis, Sida rhombifolia, and Solanum spp. Corn yield reduced by 15% and 18% with and without application of atrazine, respectively. The number of grains per spike and corn yield were negatively influenced by coexistence with weeds, while the number of rows per spike, the diameter and length of spike were not affected. Corn yield components were not affected by the use of atrazine. The critical period of weed interference prevention was 35 days without atrazine and 23 days with application of atrazine. There is a reduction of the critical period of weed interference prevention on narrow row corn by using atrazine, with no influence of the herbicide on crop yield. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-10-01 2018-11-26T15:37:38Z 2018-11-26T15:37:38Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1590/S0100-83582016340400012 Planta Daninha. Vicosa: Univ Federal Vicosa, v. 34, n. 4, p. 721-727, 2016. 0100-8358 http://hdl.handle.net/11449/159253 10.1590/S0100-83582016340400012 S0100-83582016000400721 WOS:000390436500012 S0100-83582016000400721.pdf |
url |
http://dx.doi.org/10.1590/S0100-83582016340400012 http://hdl.handle.net/11449/159253 |
identifier_str_mv |
Planta Daninha. Vicosa: Univ Federal Vicosa, v. 34, n. 4, p. 721-727, 2016. 0100-8358 10.1590/S0100-83582016340400012 S0100-83582016000400721 WOS:000390436500012 S0100-83582016000400721.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Planta Daninha 0,365 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
721-727 application/pdf |
dc.publisher.none.fl_str_mv |
Univ Federal Vicosa |
publisher.none.fl_str_mv |
Univ Federal Vicosa |
dc.source.none.fl_str_mv |
Web of Science reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128710062112768 |