Períodos de interferência de plantas daninhas na cultura do girassol

Detalhes bibliográficos
Autor(a) principal: da Silva, José Iran Cardoso
Data de Publicação: 2013
Outros Autores: Martins, Dagoberto [UNESP], Pereira, Maria Renata Rocha, Cardoso, Leonildo Alves, Rodrigues-Costa, Andreia Cristina Peres
Tipo de documento: Artigo
Idioma: eng
por
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://www.seer.ufu.br/index.php/biosciencejournal/article/view/13481
http://hdl.handle.net/11449/76486
Resumo: The interference of weeds in sunflower cultivation can significantly reduce the productivity of achenes. The objective of this study was to determine the period before interference and total period of interference of the weed community on productivity and achene oil of sunflower cultivation. The experiment was conducted under field conditions in the fieldin Botucatu (SP) in the 2007/2008 agricultural year. The experimental design was a randomized complete block with four replications. The treatments were composed of portions represent periods of control and presence of weeds. For control periods, the culture was kept free of weeds by increasing periods of 7, 14, 21, 28, 35, 42, 49 and 110 days after the emergence (DAE) of sunflower. For periods of coexistence, the culture was maintained in the presence of the weed community for the same periods. We assessed the following variables: diameter of chapters, achene yield, oil yield of sunflower, density and dry matter of weeds and phytosociological indices. The period before the interference was 35 DAE culture to the productivity of achenes, and the total period of interference lasted until 24 DAE. For oil yield, the period before the interference was 25 DAE, whereas the total period of interference lasted for 14 DAE.
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spelling Períodos de interferência de plantas daninhas na cultura do girassolPeriods of weed interference in sunflower cultureHelianthus annuusWeed competitionWeedsThe interference of weeds in sunflower cultivation can significantly reduce the productivity of achenes. The objective of this study was to determine the period before interference and total period of interference of the weed community on productivity and achene oil of sunflower cultivation. The experiment was conducted under field conditions in the fieldin Botucatu (SP) in the 2007/2008 agricultural year. The experimental design was a randomized complete block with four replications. The treatments were composed of portions represent periods of control and presence of weeds. For control periods, the culture was kept free of weeds by increasing periods of 7, 14, 21, 28, 35, 42, 49 and 110 days after the emergence (DAE) of sunflower. For periods of coexistence, the culture was maintained in the presence of the weed community for the same periods. We assessed the following variables: diameter of chapters, achene yield, oil yield of sunflower, density and dry matter of weeds and phytosociological indices. The period before the interference was 35 DAE culture to the productivity of achenes, and the total period of interference lasted until 24 DAE. For oil yield, the period before the interference was 25 DAE, whereas the total period of interference lasted for 14 DAE.A interferência de plantas daninhas na cultura do girassol pode reduzir significativamente a produtividade de aquênios. O objetivo deste trabalho foi determinar o Período Anterior à Interferência e o Período Total de Prevenção à Interferência da comunidade infestante sobre a produtividade de aquênios e de óleo da cultura do girassol. O experimento foi conduzido em campo, na área da Faculdade de Ciências Agronômicas FCA/UNESP, na Fazenda Experimental Lageado, município de Botucatu (SP), no ano agrícola de 2007/2008. O delineamento experimental foi o de blocos casualizados, com quatro repetições. Os tratamentos foram compostos por parcelas constituídas por períodos de controle e de presença de plantas daninhas. Para os períodos de controle, a cultura foi mantida livre das plantas daninhas pelos períodos crescentes de 7, 14, 21, 28, 35, 42, 49 e 110 dias após a emergência do girassol. Para os períodos de convivência, a cultura foi mantida na presença da comunidade infestante pelos mesmos períodos. Foram avaliadas as seguintes variáveis: Diâmetro de capítulos, produtividade de aquênios, rendimento de óleo de girassol, densidade e matéria seca das plantas daninhas e índices fitossociológicos. O período anterior à interferência foi de 35 DAE da cultura para a produtividade de aquênios, sendo que o período total de prevenção à interferência estendeu-se até 24 DAE. Para o rendimento de óleo, o período anterior à interferência foi de 25 DAE, enquanto que o período total de prevenção à interferência prolongou-se por 14 DAE.Departamento de Agronomia Universidade Federal do Tocantins, Gurupi, TODepartamento de Produção Vegetal FCA/UNESP, Botucatu, SPTecnologia do Estado de São Paulo - FATEC, Capão Bonito, SPFAO em Guiné-BissauUniversidade Estadual do Oeste do Paraná, Marechal Cândido Rondon, PRDepartamento de Produção Vegetal FCA/UNESP, Botucatu, SPUniversidade Federal do Tocantins (UFT)Universidade Estadual Paulista (Unesp)Faculdade de Tecnologia do Estado de São Paulo (FATEC)FAO em Guiné-BissauUniversidade Estadual do Oeste do Paraná (UNIOESTE)da Silva, José Iran CardosoMartins, Dagoberto [UNESP]Pereira, Maria Renata RochaCardoso, Leonildo AlvesRodrigues-Costa, Andreia Cristina Peres2014-05-27T11:30:36Z2014-05-27T11:30:36Z2013-09-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1254-1265application/pdfhttp://www.seer.ufu.br/index.php/biosciencejournal/article/view/13481Bioscience Journal, v. 29, n. 5, p. 1254-1265, 2013.1516-37251981-3163http://hdl.handle.net/11449/76486WOS:0003247968000202-s2.0-848844859062-s2.0-84884485906.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengporBioscience Journal0.4040,303info:eu-repo/semantics/openAccess2024-04-09T15:10:54Zoai:repositorio.unesp.br:11449/76486Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T16:00:20.625719Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Períodos de interferência de plantas daninhas na cultura do girassol
Periods of weed interference in sunflower culture
title Períodos de interferência de plantas daninhas na cultura do girassol
spellingShingle Períodos de interferência de plantas daninhas na cultura do girassol
da Silva, José Iran Cardoso
Helianthus annuus
Weed competition
Weeds
title_short Períodos de interferência de plantas daninhas na cultura do girassol
title_full Períodos de interferência de plantas daninhas na cultura do girassol
title_fullStr Períodos de interferência de plantas daninhas na cultura do girassol
title_full_unstemmed Períodos de interferência de plantas daninhas na cultura do girassol
title_sort Períodos de interferência de plantas daninhas na cultura do girassol
author da Silva, José Iran Cardoso
author_facet da Silva, José Iran Cardoso
Martins, Dagoberto [UNESP]
Pereira, Maria Renata Rocha
Cardoso, Leonildo Alves
Rodrigues-Costa, Andreia Cristina Peres
author_role author
author2 Martins, Dagoberto [UNESP]
Pereira, Maria Renata Rocha
Cardoso, Leonildo Alves
Rodrigues-Costa, Andreia Cristina Peres
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Universidade Federal do Tocantins (UFT)
Universidade Estadual Paulista (Unesp)
Faculdade de Tecnologia do Estado de São Paulo (FATEC)
FAO em Guiné-Bissau
Universidade Estadual do Oeste do Paraná (UNIOESTE)
dc.contributor.author.fl_str_mv da Silva, José Iran Cardoso
Martins, Dagoberto [UNESP]
Pereira, Maria Renata Rocha
Cardoso, Leonildo Alves
Rodrigues-Costa, Andreia Cristina Peres
dc.subject.por.fl_str_mv Helianthus annuus
Weed competition
Weeds
topic Helianthus annuus
Weed competition
Weeds
description The interference of weeds in sunflower cultivation can significantly reduce the productivity of achenes. The objective of this study was to determine the period before interference and total period of interference of the weed community on productivity and achene oil of sunflower cultivation. The experiment was conducted under field conditions in the fieldin Botucatu (SP) in the 2007/2008 agricultural year. The experimental design was a randomized complete block with four replications. The treatments were composed of portions represent periods of control and presence of weeds. For control periods, the culture was kept free of weeds by increasing periods of 7, 14, 21, 28, 35, 42, 49 and 110 days after the emergence (DAE) of sunflower. For periods of coexistence, the culture was maintained in the presence of the weed community for the same periods. We assessed the following variables: diameter of chapters, achene yield, oil yield of sunflower, density and dry matter of weeds and phytosociological indices. The period before the interference was 35 DAE culture to the productivity of achenes, and the total period of interference lasted until 24 DAE. For oil yield, the period before the interference was 25 DAE, whereas the total period of interference lasted for 14 DAE.
publishDate 2013
dc.date.none.fl_str_mv 2013-09-01
2014-05-27T11:30:36Z
2014-05-27T11:30:36Z
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://www.seer.ufu.br/index.php/biosciencejournal/article/view/13481
Bioscience Journal, v. 29, n. 5, p. 1254-1265, 2013.
1516-3725
1981-3163
http://hdl.handle.net/11449/76486
WOS:000324796800020
2-s2.0-84884485906
2-s2.0-84884485906.pdf
url http://www.seer.ufu.br/index.php/biosciencejournal/article/view/13481
http://hdl.handle.net/11449/76486
identifier_str_mv Bioscience Journal, v. 29, n. 5, p. 1254-1265, 2013.
1516-3725
1981-3163
WOS:000324796800020
2-s2.0-84884485906
2-s2.0-84884485906.pdf
dc.language.iso.fl_str_mv eng
por
language eng
por
dc.relation.none.fl_str_mv Bioscience Journal
0.404
0,303
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 1254-1265
application/pdf
dc.source.none.fl_str_mv Scopus
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
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