Population dynamics of Commelina benghalensis L. under soil and herbicide management practices
Autor(a) principal: | |
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Data de Publicação: | 1997 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Pesquisa Agropecuária Brasileira (Online) |
Texto Completo: | https://seer.sct.embrapa.br/index.php/pab/article/view/4688 |
Resumo: | One experiment was carried out on field, on a Dusky-Red dystrophic Latosol, in Londrina, PR, Brazil, during 1989-94. The objectives were to determine: a) the reduction rate of Commelina benghalensis L. seedbank; b) the Commelina seed distribution throughout the soil profile, and its evolution; c) the Commelina survival; and d) the rate of emergence of a Commelina seedbank in pre and postsowing of soybean. Four soil managements, and two with herbicide, in soybeans, after wheat, were studied. A complete randomized experiment, with split-plots, and four replications was used. Annual reducing rates of the seedbank in the soil managements as moldboard (9.9%), conventional (10.3%), scarification and heavy disc (13.8%), and no-till (18.7%) were observed with the use of postemergence herbicides; with no control, by competing with Brachiaria plantaginea (Link) Hitch., the rates were of 23.1%, 19.3%, 23.0% and 28.6%, respectively, possibly showing allelopathic effects. Estimated survival periods varied between 22.5 and 42.6 years, with herbicide control; by competing with B. plantaginea, they varied between 13.6 and 21.3 years. Emergence rates were not significant at soybeans pre-sowing. Postemergence rates varied only by year, between 0.8% and 3.7%, showing late emergence in the season. After corrective liming, which was conducted before wheat sowings, higher emergence rates for the specie occurred. |
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Population dynamics of Commelina benghalensis L. under soil and herbicide management practicesDinâmica de populações de trapoeraba (Commelina benghalensis L.) sob manejos de solo e de herbicidasno-till; weed control; plant survival; plant emergencesemeadura direta; controle de plantas daninhas; sobrevivência de plantas; emergência de plantasOne experiment was carried out on field, on a Dusky-Red dystrophic Latosol, in Londrina, PR, Brazil, during 1989-94. The objectives were to determine: a) the reduction rate of Commelina benghalensis L. seedbank; b) the Commelina seed distribution throughout the soil profile, and its evolution; c) the Commelina survival; and d) the rate of emergence of a Commelina seedbank in pre and postsowing of soybean. Four soil managements, and two with herbicide, in soybeans, after wheat, were studied. A complete randomized experiment, with split-plots, and four replications was used. Annual reducing rates of the seedbank in the soil managements as moldboard (9.9%), conventional (10.3%), scarification and heavy disc (13.8%), and no-till (18.7%) were observed with the use of postemergence herbicides; with no control, by competing with Brachiaria plantaginea (Link) Hitch., the rates were of 23.1%, 19.3%, 23.0% and 28.6%, respectively, possibly showing allelopathic effects. Estimated survival periods varied between 22.5 and 42.6 years, with herbicide control; by competing with B. plantaginea, they varied between 13.6 and 21.3 years. Emergence rates were not significant at soybeans pre-sowing. Postemergence rates varied only by year, between 0.8% and 3.7%, showing late emergence in the season. After corrective liming, which was conducted before wheat sowings, higher emergence rates for the specie occurred.Um experimento foi instalado no campo em um Latossolo Roxo distrófico, em Londrina, PR, no período de 1989-94. Os objetivos foram determinar: a) as taxas de redução do banco de sementes de trapoeraba (Commelina benghalensis L.); b) a distribuição das sementes de trapoeraba no perfil do solo e sua evolução; c) o período de sobrevivência da trapoeraba; d) as taxas de emergência de um banco de sementes de trapoeraba em pré e pós-semeadura da soja. Foram estudados quatro manejos de solo, e dois de herbicidas, na cultura da soja, seguida de trigo. Foi usado um delineamento em blocos casualizados, com parcelas divididas e quatro repetições. Taxas anuais de redução do banco de sementes nos manejos de solo aiveca (9,9%), convencional (10,3%), escarificação e grade rome (13,8%) e semeadura direta (18,7%), foram observadas com os herbicidas usados em pós-emergência; sem controle, na presença de capim-marmelada (Brachiaria plantaginea (Link) Hitch.), as taxas foram de 23,1%, 19,3%, 23,0% e 28,6%, respectivamente. Os períodos de sobrevivência estimados variaram entre 22,5 e 42,6 anos, com aplicação de herbicida e entre 13,6 e 21,3 anos, sem herbicida. As taxas de emergência não foram significativas em pré-semeadura da soja; em pós-semeadura, variaram com o ano, entre 0,8% e 3,7%, apresentando emergência tardia. Após aplicações corretivas de calcário dolomítico ao solo, antecedendo a cultura do trigo, ocorreram maiores taxas de emergência da espécie.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraVoll, ElemarKaram, DécioL.P. Gazziero, Dionísio1997-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/4688Pesquisa Agropecuaria Brasileira; v.32, n.6, jun. 1997; 571-578Pesquisa Agropecuária Brasileira; v.32, n.6, jun. 1997; 571-5781678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/4688/7342info:eu-repo/semantics/openAccess2015-03-30T18:35:36Zoai:ojs.seer.sct.embrapa.br:article/4688Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2015-03-30T18:35:36Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Population dynamics of Commelina benghalensis L. under soil and herbicide management practices Dinâmica de populações de trapoeraba (Commelina benghalensis L.) sob manejos de solo e de herbicidas |
title |
Population dynamics of Commelina benghalensis L. under soil and herbicide management practices |
spellingShingle |
Population dynamics of Commelina benghalensis L. under soil and herbicide management practices Voll, Elemar no-till; weed control; plant survival; plant emergence semeadura direta; controle de plantas daninhas; sobrevivência de plantas; emergência de plantas |
title_short |
Population dynamics of Commelina benghalensis L. under soil and herbicide management practices |
title_full |
Population dynamics of Commelina benghalensis L. under soil and herbicide management practices |
title_fullStr |
Population dynamics of Commelina benghalensis L. under soil and herbicide management practices |
title_full_unstemmed |
Population dynamics of Commelina benghalensis L. under soil and herbicide management practices |
title_sort |
Population dynamics of Commelina benghalensis L. under soil and herbicide management practices |
author |
Voll, Elemar |
author_facet |
Voll, Elemar Karam, Décio L.P. Gazziero, Dionísio |
author_role |
author |
author2 |
Karam, Décio L.P. Gazziero, Dionísio |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
|
dc.contributor.author.fl_str_mv |
Voll, Elemar Karam, Décio L.P. Gazziero, Dionísio |
dc.subject.por.fl_str_mv |
no-till; weed control; plant survival; plant emergence semeadura direta; controle de plantas daninhas; sobrevivência de plantas; emergência de plantas |
topic |
no-till; weed control; plant survival; plant emergence semeadura direta; controle de plantas daninhas; sobrevivência de plantas; emergência de plantas |
description |
One experiment was carried out on field, on a Dusky-Red dystrophic Latosol, in Londrina, PR, Brazil, during 1989-94. The objectives were to determine: a) the reduction rate of Commelina benghalensis L. seedbank; b) the Commelina seed distribution throughout the soil profile, and its evolution; c) the Commelina survival; and d) the rate of emergence of a Commelina seedbank in pre and postsowing of soybean. Four soil managements, and two with herbicide, in soybeans, after wheat, were studied. A complete randomized experiment, with split-plots, and four replications was used. Annual reducing rates of the seedbank in the soil managements as moldboard (9.9%), conventional (10.3%), scarification and heavy disc (13.8%), and no-till (18.7%) were observed with the use of postemergence herbicides; with no control, by competing with Brachiaria plantaginea (Link) Hitch., the rates were of 23.1%, 19.3%, 23.0% and 28.6%, respectively, possibly showing allelopathic effects. Estimated survival periods varied between 22.5 and 42.6 years, with herbicide control; by competing with B. plantaginea, they varied between 13.6 and 21.3 years. Emergence rates were not significant at soybeans pre-sowing. Postemergence rates varied only by year, between 0.8% and 3.7%, showing late emergence in the season. After corrective liming, which was conducted before wheat sowings, higher emergence rates for the specie occurred. |
publishDate |
1997 |
dc.date.none.fl_str_mv |
1997-06-01 |
dc.type.none.fl_str_mv |
|
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://seer.sct.embrapa.br/index.php/pab/article/view/4688 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/4688 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://seer.sct.embrapa.br/index.php/pab/article/view/4688/7342 |
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.publisher.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
publisher.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
dc.source.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira; v.32, n.6, jun. 1997; 571-578 Pesquisa Agropecuária Brasileira; v.32, n.6, jun. 1997; 571-578 1678-3921 0100-104x reponame:Pesquisa Agropecuária Brasileira (Online) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Pesquisa Agropecuária Brasileira (Online) |
collection |
Pesquisa Agropecuária Brasileira (Online) |
repository.name.fl_str_mv |
Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
pab@sct.embrapa.br || sct.pab@embrapa.br |
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