Interferência e estudos fitossociológicos da comunidade infestante na cultura do sorgo sacarino
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/S0100-83582017350100051 http://hdl.handle.net/11449/170111 |
Resumo: | This research was carried out to evaluate the interference periods and phytosociological indexes of the weed community on sweet sorghum, hybrid CVSW 80007, cultivated for two seasons in a year. The treatments were based on an increased duration of weed presence and weed absence after sowing (0, 4, 7, 14, 21, 28, 35, 42, 56 and 68 days after crop emergence for the summer season and 0, 4, 7, 14, 21, 28, 35, 42, 49, 56, 63 and 100 days for the fall season). The weed community was evaluated based on the number of weeds and the dry mass of each weed population in each period of weed control in the summer season and each period of no weed control and weed control in the autumn season. These data were used to determine the relative indexes of density, dominance and importance, and the weed community indexes of diversity and equitability. The main weeds comprising the community were Cyperus rotundus, Alternanthera tenella, Indigofera hirsuta, Amaranthus sp., Digitaria nuda, and Portulaca oleracea. The weed density was found to be the primary factor for the importance of weeds in the community, once their development and biomass accumulation were suppressed by the sweet sorghum competition. The sweet sorghum hybrid proved highly competitive and, in the agro-ecological conditions of the trials, weed interference did not reduce crop yield. |
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Interferência e estudos fitossociológicos da comunidade infestante na cultura do sorgo sacarinoWeed community interference and phytosociological studies in a sweet sorghum cropSorghum bicolorWeed competitionWeedsThis research was carried out to evaluate the interference periods and phytosociological indexes of the weed community on sweet sorghum, hybrid CVSW 80007, cultivated for two seasons in a year. The treatments were based on an increased duration of weed presence and weed absence after sowing (0, 4, 7, 14, 21, 28, 35, 42, 56 and 68 days after crop emergence for the summer season and 0, 4, 7, 14, 21, 28, 35, 42, 49, 56, 63 and 100 days for the fall season). The weed community was evaluated based on the number of weeds and the dry mass of each weed population in each period of weed control in the summer season and each period of no weed control and weed control in the autumn season. These data were used to determine the relative indexes of density, dominance and importance, and the weed community indexes of diversity and equitability. The main weeds comprising the community were Cyperus rotundus, Alternanthera tenella, Indigofera hirsuta, Amaranthus sp., Digitaria nuda, and Portulaca oleracea. The weed density was found to be the primary factor for the importance of weeds in the community, once their development and biomass accumulation were suppressed by the sweet sorghum competition. The sweet sorghum hybrid proved highly competitive and, in the agro-ecological conditions of the trials, weed interference did not reduce crop yield.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Universidade Estadual Paulista “Júlio de Mesquita Filho” (UNESP)Universidade Estadual Paulista “Júlio de Mesquita Filho” (UNESP)Universidade Estadual Paulista (Unesp)Giancotti, P. R.F. [UNESP]Moro, M. S. [UNESP]Nepomuceno, M. P. [UNESP]Barroso, A. A.M. [UNESP]Martins, P. F.R.B. [UNESP]Alves, P. L.C.A. [UNESP]2018-12-11T16:49:18Z2018-12-11T16:49:18Z2017-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://dx.doi.org/10.1590/S0100-83582017350100051Planta Daninha, v. 35.0100-8358http://hdl.handle.net/11449/17011110.1590/S0100-83582017350100051S0100-835820170001002492-s2.0-85029000076S0100-83582017000100249.pdf01033835242882120000-0003-2348-2121Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengPlanta Daninha0,365info:eu-repo/semantics/openAccess2024-01-18T06:30:21Zoai:repositorio.unesp.br:11449/170111Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T23:22:10.035055Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Interferência e estudos fitossociológicos da comunidade infestante na cultura do sorgo sacarino Weed community interference and phytosociological studies in a sweet sorghum crop |
title |
Interferência e estudos fitossociológicos da comunidade infestante na cultura do sorgo sacarino |
spellingShingle |
Interferência e estudos fitossociológicos da comunidade infestante na cultura do sorgo sacarino Giancotti, P. R.F. [UNESP] Sorghum bicolor Weed competition Weeds |
title_short |
Interferência e estudos fitossociológicos da comunidade infestante na cultura do sorgo sacarino |
title_full |
Interferência e estudos fitossociológicos da comunidade infestante na cultura do sorgo sacarino |
title_fullStr |
Interferência e estudos fitossociológicos da comunidade infestante na cultura do sorgo sacarino |
title_full_unstemmed |
Interferência e estudos fitossociológicos da comunidade infestante na cultura do sorgo sacarino |
title_sort |
Interferência e estudos fitossociológicos da comunidade infestante na cultura do sorgo sacarino |
author |
Giancotti, P. R.F. [UNESP] |
author_facet |
Giancotti, P. R.F. [UNESP] Moro, M. S. [UNESP] Nepomuceno, M. P. [UNESP] Barroso, A. A.M. [UNESP] Martins, P. F.R.B. [UNESP] Alves, P. L.C.A. [UNESP] |
author_role |
author |
author2 |
Moro, M. S. [UNESP] Nepomuceno, M. P. [UNESP] Barroso, A. A.M. [UNESP] Martins, P. F.R.B. [UNESP] Alves, P. L.C.A. [UNESP] |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Giancotti, P. R.F. [UNESP] Moro, M. S. [UNESP] Nepomuceno, M. P. [UNESP] Barroso, A. A.M. [UNESP] Martins, P. F.R.B. [UNESP] Alves, P. L.C.A. [UNESP] |
dc.subject.por.fl_str_mv |
Sorghum bicolor Weed competition Weeds |
topic |
Sorghum bicolor Weed competition Weeds |
description |
This research was carried out to evaluate the interference periods and phytosociological indexes of the weed community on sweet sorghum, hybrid CVSW 80007, cultivated for two seasons in a year. The treatments were based on an increased duration of weed presence and weed absence after sowing (0, 4, 7, 14, 21, 28, 35, 42, 56 and 68 days after crop emergence for the summer season and 0, 4, 7, 14, 21, 28, 35, 42, 49, 56, 63 and 100 days for the fall season). The weed community was evaluated based on the number of weeds and the dry mass of each weed population in each period of weed control in the summer season and each period of no weed control and weed control in the autumn season. These data were used to determine the relative indexes of density, dominance and importance, and the weed community indexes of diversity and equitability. The main weeds comprising the community were Cyperus rotundus, Alternanthera tenella, Indigofera hirsuta, Amaranthus sp., Digitaria nuda, and Portulaca oleracea. The weed density was found to be the primary factor for the importance of weeds in the community, once their development and biomass accumulation were suppressed by the sweet sorghum competition. The sweet sorghum hybrid proved highly competitive and, in the agro-ecological conditions of the trials, weed interference did not reduce crop yield. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-01-01 2018-12-11T16:49:18Z 2018-12-11T16:49:18Z |
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/S0100-83582017350100051 Planta Daninha, v. 35. 0100-8358 http://hdl.handle.net/11449/170111 10.1590/S0100-83582017350100051 S0100-83582017000100249 2-s2.0-85029000076 S0100-83582017000100249.pdf 0103383524288212 0000-0003-2348-2121 |
url |
http://dx.doi.org/10.1590/S0100-83582017350100051 http://hdl.handle.net/11449/170111 |
identifier_str_mv |
Planta Daninha, v. 35. 0100-8358 10.1590/S0100-83582017350100051 S0100-83582017000100249 2-s2.0-85029000076 S0100-83582017000100249.pdf 0103383524288212 0000-0003-2348-2121 |
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 |
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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1808129511690076160 |